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Noise Filters（Circuit Configuration：Single-Phase）
A noise filter is a device used to remove high-frequency noise. High-frequency noise is generated from the inverter, which is the power conversion device of the equipment, causes a malfunction and communication failure of the source electronic device, peripheral electronic devices, etc. Noise includes conduction noise, induction noise, radiated noise, etc. and a noise filter is used to remove them. Utilizing the characteristics of a low-pass filter that blocks frequencies higher than the cut-off frequency and passes only low frequencies, it is designed to remove high-frequency noise by incorporating it into the circuit. Single-phase and three-phase products can be selected, and the bundling method is generally screw fastening, but there are also soldering types. The rated current is from 0.3 A to 300 A for large ones.
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Specification/Dimensions
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Rated Current(A)
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Circuit Configuration
- Single-Phase
- Three-Phase
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Mounting Method
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Dimension depth(mm)
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Wiring Method
- Screw Fastening
- Lead Wire
- Tab
- Solder
- Lug terminal
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Representative Standard
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Dimension vertical(mm)
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Dimension width(mm)
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TDK-LAMBDA
High-attenuation single-phase noise filter with an emphasis on diverse variations and functionality.
[Features]
・ Wiring workability is improved by SEMS screws and openable cover.
·A wide range lineup from 3 to 300 A.
・ As an option, low leakage current characteristic type and DIN rail mounting compatible type are available.
[Applications]
·Ideal for data communication, medical equipment, measuring instrument, factory automation equipment, semiconductors, railway-related equipment, LED-related equipment, and energy-related equipment.From: ฿ 1,096.89 Days to Ship: 
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Compact General-Purpose Type RSEL Series
TDK-LAMBDA
A general-purpose single-phase noise filter with a wide variety of variations and an emphasis on functionality.
[Features]
- Wire type and FASTON terminal type are available in the same shape
● Low leakage current characteristics are available as an option
● Compact general-purpose type
[Applications]
● Convenient for data communications, medical equipment, measuring equipment, FA equipment, semiconductors, LED-related, and energy-relatedFrom: ฿ 423.06 Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
TDK-LAMBDA
High damping type with a focus on various variations and functionality single-phase filter (DIN rail mounting type)From: ฿ 1,143.24 Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
TDK-LAMBDA
A general-purpose single-phase noise filter that emphasizes a wide variety of variations and functionality.
[Features]
・ DIN rail mounting type.
・ Wiring workability is improved by SEMS screws and openable cover.
・ Wide lineup from 3 to 300 A.
・ As an option, low leakage current characteristic type and DIN rail mounting compatible type are available.
[Applications]
・ Convenient for data communication, medical equipment, measuring instrument, factory automation equipment, semiconductors, railway-related, LED-related, and energy-related.From: ฿ 728.12 Days to Ship:
Same day
Same day
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Economy seriesYou can add up to 6 items per a category to the compare list.
Noise Filters are an economy item, The price is cheaper than the MISUMI standard product.They offer a wide variety of sizes to choose from.
[Feature]
● Type : Single Phase
● Rated Current(A) : 6, 10, 20 and 30
● Mounting Method : DIN rail and Screw fastening
● Wiring Method : Terminal block
● Operating Temperature (℃) : -25 to 85
[Application]
Noise Filters are commonly used in various applications in factory automation systemsFrom: ฿ 796.10 Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
TDK-LAMBDA
General purpose single-phase filter with a focus on various variations and functionality (DIN rail mounting type)From: ฿ 907.13 Days to Ship:
5 Day(s)
5 Day(s)
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025TDK-LAMBDA
Multipurpose single-phase noise filter that is compatible with high-voltage pulses.
[Features]
·The amorphous core is used for the common mode coil magnetic core of the RSEN series, which is effective in preventing malfunctions of equipment.
・ Wiring workability is improved by SEMS screws and openable cover.
·A lineup of low-leakage current type and DIN rail mounting compatible type are available as an option.
[Applications]
·Ideal for data communication, medical equipment, measuring instrument, factory automation equipment, semiconductors, railway-related equipment, LED-related equipment, and energy-related equipment.From: ฿ 814.74 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Noise Filter (Single-Phase, Low-Profile)
MISUMI
[Applications]A measure to prevent noise intrusion from single-phase power supply lines [Features] · Improved workability with self-lifting screws and opening/closing covers · DIN rail mount type also availableFrom: ฿ 1,126.82 Days to Ship:
3 Day(s)
3 Day(s)
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You can add up to 6 items per a category to the compare list.
Noise Filter (Single-Phase, General-Purpose Model)
MISUMI
[Applications]Prevents noise from power supply outlet lines [Features] · Connection with tab terminal #250From: ฿ 770.48 Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
TDK-LAMBDA
High-voltage pulse compatible, high-attenuation noise filter with an emphasis on diverse variations and functionality.
[Features]
·The amorphous core is used for the common mode coil magnetic core of the RSHN series.
·Highly effective in preventing malfunctions of equipment and current saturation. EMC filter.
・ Wiring workability is improved by SEMS screws and openable cover.
・ As an option, low leakage current characteristic type and DIN rail mounting compatible type are available.
[Applications]
·Ideal for data communication, medical equipment, measuring instrument, factory automation equipment, semiconductors, railway-related equipment, LED-related equipment, and energy-related equipment.From: ฿ 1,128.50 Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Noise Filter (Single-Phase, Standard/Wire)
MISUMI
[Applications]Noise prevention from single-phase power supply lines, compact type [Features] · Compact general-purpose type with a lineup of 1 to 3 A · Wire type for easy wiring workFrom: ฿ 551.28 Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
RMS Series (Single-phase, High Attenuator)
ORIENT
Orient Electronics is the no. 1 manufacturer of the Korean domestic power market.
[Features]
· A high damping type that prevents noise from single-phase power lines.
· The RMS series has improved workability due to its retractable type cover.
· DIN rail mounting types are also available. Compatible with UL and CE standards.From: ฿ 939.69 Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Noise Filter (Single-Phase, High-Attenuation)
MISUMI
[Applications]Noise prevention from single-phase power supply lines, high attenuation type [Features] · Improved workability with self-lifting screws and opening/closing covers · DIN rail mount type also availableFrom: ฿ 1,282.62 Days to Ship:
3 Day(s)
3 Day(s)
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You can add up to 6 items per a category to the compare list.
Miniature 150kHz-1MHz Common Mode Noise Filter (Single-Stage Filter) EAC Series
COSEL
Noise terminal compact noise filter for voltage suppression.
[Features]
·It uses a push-down terminal block.
·Product lineup. (3 A/6 A/10 A/16 A/20 A/30 A)
·Ground capacitor that can be selected according to the application.
·DIN rail mounting type is available as an option.
·Compact 150 kHz to 1 MHz common mode noise filter (1-stage filter).
·ø1 noise filter.
·Single-phase 250 V.
·It has mounting compatibility with EAC, EAM or EMP and can be used properly according to the application.
·Compact model.
·It uses a quick and easy push-down terminal block (with screw fall prevention function).
[Applications]
·Ideal for using multiple switched-mode power supplies and single-phase inverters.From: ฿ 716.74 Days to Ship:
3 Day(s)
3 Day(s)
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You can add up to 6 items per a category to the compare list.
ORIENT
Orient Electronics is the no. 1 manufacturer of the Korean domestic power market.
[Features]
· Korea power market Top share, orient electronic adoption.
· Improved workability by retractable (opening / shutting) type cover.
· DIN Also a lineup of the rail mounting type is available.From: ฿ 634.56 Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
COSEL
Noise terminal noise filter for voltage suppression.
[Features]
·150 kHz to 1 MHz high attenuation type.
·ø1 noise filter.
·Single-phase 250 V.
·Lineup from 4 to 30 A. (4 A/6 A/10 A/16 A/20 A/30 A)
·It uses a quick and easy push-down terminal block.
·With screw fall prevention function.
·It has mounting compatibility with NAC, NAH, NAM, NMP and can be used properly according to the application.
·Ground capacitor that can be selected according to the application.
·DIN rail mounting type is available as an option.
[Applications]
·Ideal for using multiple switched-mode power supplies, single-phase inverters, etc.From: ฿ 845.07 Days to Ship:
3 Day(s)
3 Day(s)
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025OMRON
DIN rail-mounted type that is ideal for control panels. Slim type that conserves space. Push-in connection for safe and easy wiring
"ValueDesign "Compatible Product
[Features]
· Easily equipped: Can be mounted to a DIN rail with a single action
· Conserves space: Shape is slimmer than conventional noise filters
· Reduction of risk of electric shock: Conductive parts are not exposed, so protective terminal covers are unnecessaryFrom: ฿ 3,171.00 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Compact And General-Purpose Type RSAL series Compatible With High Voltage Pulses
TDK-LAMBDA
Compact, general-purpose noise filter compatible with high voltage pulses.
[Features]
● Adopts an amorphous core for the common mode coil magnetic core of the RSEL series
● Effective in preventing equipment malfunction
● Wire type and lug terminal type are available in the same shape
● Low leakage current characteristics type is available as an optionFrom: ฿ 469.14 Days to Ship:
5 Day(s)
5 Day(s)
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You can add up to 6 items per a category to the compare list.
EMC Filter For Power Line RSEV Series
TDK-LAMBDA
Single-phase, compact EMC filter with improved wiring workability.
[Features]
● All screws have a self-up structure
● Integrated terminal block cover and main body
● DIN rail mounting attachment (sold separately) is available (model name: DIN-RSEV)From: ฿ 693.00 Days to Ship:
3 Day(s)
3 Day(s)
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You can add up to 6 items per a category to the compare list.
Miniature/External Impulse Common Mode Noise Filter (Single-Stage Filter) EAP Series
COSEL
Compact noise filter for suppressing device malfunction due to external noise.
[Features]
·It uses a quick and easy push-down terminal block (with screw fall prevention function).
·Product lineup. (3 A/6 A/10 A/16 A/20 A/30 A)
·Ground capacitor that can be selected according to the application.
·DIN rail mounting type is available as an option.
·Compact external impulse common mode noise filter (1-stage filter).
·ø1 noise filter.
·Single-phase 250 V.
·It has mounting compatibility with EAC, EAM or EMP and can be used properly according to the application.
·Compact model.
[Applications]
·Ideal for industrial equipment with sequencers and computers.From: ฿ 702.27 Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
NBC Series Single-Phase Noise Filter (High Attenuation / 2-Stage Filter / Low-Frequency Attenuation)
COSEL
Noise terminal noise filter for voltage suppression.
[Features]
·150 kHz to 1 MHz high attenuation type (2-stage filter).
·Single-phase 250 V.
·It uses a quick and easy push-down terminal block. (With screw fall prevention function)
·ø1 noise filter.
·Mounting compatibility with NAC series.
·Ground capacitor that can be selected according to the application.
·DIN rail mounting type is available as an option.
[Applications]
·Ideal for using multiple power supplies and medical equipment.From: ฿ 1,085.13 Days to Ship:
3 Day(s)
3 Day(s)
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You can add up to 6 items per a category to the compare list.
TDK-LAMBDA
General-purpose single-phase filters compatible with high-voltage pulse.RSEN The amorphous core is adopted in the common mode coil magnetic core of the series, it is effective in preventing malfunction of equipment. (DIN rail mounting compatible type)From: ฿ 1,138.67 Days to Ship:
5 Day(s)
5 Day(s)
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From: ฿ 100.00 Days to Ship:
Quote
Quote
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You can add up to 6 items per a category to the compare list.
COSEL
Compact noise filter for suppressing device malfunction due to external noise.
[Features]
·External impulse high attenuation type.
·ø1 noise filter.
·Single-phase 250 V.
·Lineup from 4 to 30 A. (4 A/6 A/10 A/16 A/20 A/30 A)
·It uses a quick and easy push-down terminal block (with screw fall prevention function).
·It has mounting compatibility with NAC, NAH, NAM, NMP and can be used properly according to the application.
·Ground capacitor that can be selected according to the application.
·DIN rail mounting type is available as an option.
[Applications]
·Ideal for industrial equipment with sequencers and computers.From: ฿ 920.60 Days to Ship:
3 Day(s)
3 Day(s)
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You can add up to 6 items per a category to the compare list.
NBH Series Single-Phase Noise Filter (High Attenuation / 2-Stage Filter / Broadband Attenuation)
COSEL
Noise filter for suppression of noise terminal voltage.
[Features]
· 10 kHz-10 MHz (broadband) high attenuation type (two-stage filter).
· Single phase 250V.·
· 4 kV pressure resistance (ground capacitor code -000 to -471 is supported).
· Grounded capacitor selectable according to application.
· Adopts push-down type of terminal block that is quick and easy. (Includes a screw-captive function).
· Optional DIN rail mount type is available.
· Compatible with NAM series.
[Applications]
· Suitable for robots with multiple switched-mode power supplies and single-phase inverters or servo motors.From: ฿ 1,263.11 Days to Ship:
3 Day(s)
3 Day(s)
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You can add up to 6 items per a category to the compare list.
NAH Series, Single-Phase Noise Filter (For General Purpose / 1-step Filter / Low-pass Attenuation)
COSEL
Noise terminal noise filter for voltage suppression.
[Features]
·10 kHz to 1 MHz high attenuation type.
·Single-phase 250 V.
·Ground capacitor that can be selected according to the application.
·It uses a quick and easy push-down terminal block (with screw fall prevention function).
·DIN rail mounting type is available as an option.
·It has mounting compatibility with NAC, NAH, NAM, NMP and can be used properly according to the application.
[Applications]
·Ideal for using multiple switched-mode power supplies, robots with single-phase inverters or servo motors, medical equipment, etc.From: ฿ 1,167.66 Days to Ship:
3 Day(s)
3 Day(s)
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You can add up to 6 items per a category to the compare list.
TDK-LAMBDA
Compact general-purpose type (high attenuation)
[Features]
· Attenuation effect against high-voltage pulse noise
· High shielding effect
· Space saving design for simple and user friendly installationFrom: ฿ 1,276.56 Days to Ship:
6 Day(s)
6 Day(s)
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| Specifications |
| Rated Current(A) |
| Circuit Configuration |
| Mounting Method |
| Dimension depth(mm) |
| Wiring Method |
| Representative Standard |
| Dimension vertical(mm) |
| Dimension width(mm) |
You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.    | You can add up to 6 items per a category to the compare list. | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | |
| Brand | TDK-LAMBDA | TDK-LAMBDA | TDK-LAMBDA | TDK-LAMBDA | TDK-LAMBDA | TDK-LAMBDA | MISUMI | MISUMI | TDK-LAMBDA | MISUMI | ORIENT | MISUMI | COSEL | ORIENT | COSEL | OMRON | TDK-LAMBDA | TDK-LAMBDA | COSEL | COSEL | TDK-LAMBDA | NECTOKIN | COSEL | COSEL | COSEL | TDK-LAMBDA | |
| Product Series | Miniature 150kHz-1MHz Common Mode Noise Filter (Single-Stage Filter) EAC Series | Compact And General-Purpose Type RSAL series Compatible With High Voltage Pulses | Miniature/External Impulse Common Mode Noise Filter (Single-Stage Filter) EAP Series | NBC Series Single-Phase Noise Filter (High Attenuation / 2-Stage Filter / Low-Frequency Attenuation) | NBH Series Single-Phase Noise Filter (High Attenuation / 2-Stage Filter / Broadband Attenuation) | NAH Series, Single-Phase Noise Filter (For General Purpose / 1-step Filter / Low-pass Attenuation) | |||||||||||||||||||||
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| From | ฿ 1,096.89 | ฿ 423.06 | ฿ 1,143.24 | ฿ 728.12 | ฿ 796.10 | ฿ 907.13 | ฿ 814.74 Special Price On Sale Until 31/03/2025 | ฿ 1,126.82 | ฿ 770.48 | ฿ 1,128.50 | ฿ 551.28 | ฿ 939.69 | ฿ 1,282.62 | ฿ 716.74 | ฿ 634.56 | ฿ 845.07 | ฿ 3,171.00 Special Price On Sale Until 31/03/2025 | ฿ 469.14 | ฿ 693.00 | ฿ 702.27 | ฿ 1,085.13 | ฿ 1,138.67 | ฿ 100.00 | ฿ 920.60 | ฿ 1,263.11 | ฿ 1,167.66 | ฿ 1,276.56 |
| Days to Ship | Same day | Same day | Same day | Same day | Same day | 5 Day(s) | Same day | 3 Day(s) | Same day | Same day | Same day | Same day | 3 Day(s) | 3 Day(s) | Same day | 3 Day(s) | Same day | 5 Day(s) | 3 Day(s) | Same day | 3 Day(s) | 5 Day(s) | Quote | 3 Day(s) | 3 Day(s) | 3 Day(s) | 6 Day(s) |
| Specifications | |||||||||||||||||||||||||||
| Rated Current(A) | 3 ～ 60 | 0.5 ～ 6 | 3 ～ 20 | 3 ～ 60 | 6 ～ 30 | 3 ～ 10 | 3 ～ 60 | 6 ～ 30 | 5 ～ 10 | 3 ～ 50 | 1 ～ 3 | 6 ～ 20 | 6 ～ 20 | 10 ～ 30 | 6 ～ 20 | 10 ～ 30 | 3 ～ 6 | 0.5 ～ 6 | 6 ～ 30 | 3 ～ 10 | 6 ～ 30 | 10 | 15 | 4 ～ 20 | 6 ～ 30 | 6 ～ 30 | 1 |
| Circuit Configuration | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase |
| Mounting Method | Fasten With Screws / DIN rail/Screw retention | Fasten With Screws | DIN rail/Screw retention | Fasten With Screws / DIN rail/Screw retention | DIN Rail / Fasten With Screws | DIN rail/Screw retention | Fasten With Screws / DIN rail/Screw retention | DIN Rail / Fasten With Screws | Fasten With Screws | DIN Rail / Fasten With Screws / DIN rail/Screw retention | Fasten With Screws | DIN Rail / Fasten With Screws | DIN Rail / Fasten With Screws | DIN Rail / Fasten With Screws | DIN Rail / Fasten With Screws | DIN Rail / Fasten With Screws | - | Fasten With Screws | DIN rail/Screw retention | Fasten With Screws | DIN Rail / Fasten With Screws | DIN rail/Screw retention | Fasten With Screws | DIN Rail / Fasten With Screws | DIN Rail / Fasten With Screws | DIN Rail / Fasten With Screws | Fasten With Screws |
| Dimension depth(mm) | 52 ～ 100 | 50 | 52 | 35 ～ 90 | - | 52 | 35 ～ 90 | 35 ～ 43.4 | 32 ～ 38 | 35 ～ 100 | 20 | 40 | 35 ～ 43.4 | 30 ～ 37 | 40 | 41 ～ 48 | 90 | 20 | 39 | 30 | 41 ～ 48 | 52 | 26 | 41 ～ 48 | 43 ～ 50 | 41 ～ 48 | 32 |
| Wiring Method | Screw Fastening | Lead Wire / Lug terminal | Screw Fastening | Screw Fastening | Lug terminal | Screw Fastening | Screw Fastening | Screw Fastening | Tab | Screw Fastening | Lead Wire | Screw Fastening | Screw Fastening | Screw Fastening | Screw Fastening | Screw Fastening | - | Lead Wire / Lug terminal | Screw Fastening | Screw Fastening | Screw Fastening | Screw Fastening | Solder | Screw Fastening | Screw Fastening | Screw Fastening | Lead Wire |
| Representative Standard | UL / CSA | UL / CSA | UL / CSA | UL / CSA | - | UL / CSA | UL / CSA | UL / CSA | UL / TUV / CSA | UL / CSA | UL / CSA | CE / UL | UL / CSA | UL / CUL / CSA | CE / UL | UL / CUL / CSA | UL / CUL / TUV / CSA | UL / CSA | CUL / CSA | UL / CUL / CSA | UL / CUL / CSA | UL / CSA | UL / CSA | UL / CUL / CSA | UL / CUL / CSA | UL / CUL / CSA | UL / CSA |
| Dimension vertical(mm) | 35 ～ 60 | 20 | 35 | 35 ～ 54 | - | 35 | 35 ～ 54 | 52 | 51.8 | 35 ～ 60 | 50 | 50 | 52 ～ 63 | 85 | 50 | 92 | 94.7 | 50 | 85 | 85 | 92 | 35 | 52 | 92 | 104 | 92 | 23 |
| Dimension width(mm) | 98 ～ 272 | 45 | 98 ～ 127 | 87 ～ 170 | - | 87 | 87 ～ 170 | 87 ～ 98 | 94.5 | 98 ～ 272 | 45 | 90.5 | 98 ～ 127 | 39 | 90.5 | 53 | 32 | 45 | 30 | 39 | 53 | 87 | 67 | 53 | 53 | 53 | 68 |
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Related Categories to Noise Filters
FAQ Noise Filters
- Question: What is a noise filter and why is it important in electronic systems?
- Answer: A noise filter is a device designed to remove high-frequency noise from power and signal lines in electronic systems. It is crucial for preventing interference and ensuring the proper functioning of electronic devices by eliminating noise that can cause malfunctions and communication errors in connected equipment. Noise filters help maintain the integrity of signals and improve the reliability and longevity of electronic systems.
- Question: What types of noise do noise filters remove?
- Answer: Noise filters are effective in removing various types of noise, including conduction noise, induction noise, and radiated noise. Conduction noise travels along power and signal lines, while induction noise is caused by electromagnetic interference from nearby devices. Radiated noise is emitted as electromagnetic waves and can affect nearby electronic components. Noise filters block or attenuate these unwanted signals, reducing their impact on system performance.
- Question: How does a noise filter work?
- Answer: Noise filters operate using the principle of a low-pass filter, which allows low-frequency signals to pass through while blocking high-frequency noise. They incorporate components such as inductors, capacitors, and resistors to create impedance paths for high-frequency noise, effectively reducing or eliminating it from the power or signal lines. The filtered noise is either dissipated as heat or redirected to ground.
- Question: What are the main types of noise filters available?
- Answer: The main types of noise filters include single-phase filters, three-phase filters, and common-mode filters. Single-phase filters are used for standard AC power lines, while three-phase filters are designed for industrial applications with three-phase power systems. Common-mode filters target common-mode noise that appears on multiple lines simultaneously. Each type is selected based on the specific requirements of the application.
- Question: How do I choose the right noise filter for my application?
- Answer: To choose the right noise filter, consider factors such as the type of noise to be filtered, the power requirements, the voltage and current ratings, and the environmental conditions of the application. Assess the noise characteristics and determine whether you need single-phase, three-phase, or common-mode filtering. Ensure that the filter’s rated current and voltage match your system’s specifications and that it is suitable for the operating environment.
- Question: What are the benefits of using noise filters in industrial applications?
- Answer: Noise filters offer several benefits in industrial applications, including improved equipment reliability, reduced electromagnetic interference (EMI), enhanced signal integrity, and compliance with regulatory standards for electromagnetic compatibility (EMC). They help prevent malfunctions and data errors caused by electrical noise, leading to increased uptime and reduced maintenance costs. Noise filters also contribute to a safer and more efficient operating environment.
- Question: How does a noise filter differ from a surge protector?
- Answer: A noise filter is designed to block or attenuate high-frequency noise from power and signal lines, while a surge protector protects electronic equipment from voltage spikes and surges. Noise filters focus on maintaining signal integrity by reducing interference, whereas surge protectors safeguard against sudden increases in voltage that can damage components. Both devices can be used together to provide comprehensive protection for electronic systems.
- Question: What are the common applications of noise filters?
- Answer: Noise filters are commonly used in various applications, including data communication systems, medical equipment, industrial automation, power supplies, and audio-visual equipment. They are essential in environments with high levels of electromagnetic interference, such as factories, hospitals, and data centers, where they help ensure the reliable operation of sensitive electronic devices.
- Question: How do I install a noise filter?
- Answer: Installation of a noise filter typically involves connecting it in series with the power or signal lines that require filtering. For single-phase filters, connect the input and output terminals to the corresponding lines, ensuring proper grounding to dissipate noise. Three-phase filters are installed similarly but require connections to all three phases. Follow the manufacturer’s instructions for mounting and wiring, and ensure that the filter’s ratings match the system requirements.
- Question: Can noise filters be used in both AC and DC systems?
- Answer: Yes, noise filters can be used in both AC and DC systems, but the type of filter used will vary depending on the application. AC noise filters are designed for alternating current applications and are commonly used to filter noise from AC power lines. DC noise filters are used in direct current systems and are typically used to filter noise from DC power supplies and signal lines. Select the appropriate filter type based on your system’s power source.
- Question: What are the differences between single-phase and three-phase noise filters?
- Answer: Single-phase noise filters are designed for use with single-phase power systems and are commonly used in residential and commercial applications. They typically have two or three connections: live, neutral, and sometimes ground. Three-phase noise filters are used in industrial applications with three-phase power systems and have connections for all three phases (L1, L2, L3) and often ground. Three-phase filters are suitable for higher power applications and provide more comprehensive noise suppression.
- Question: How do I determine the correct rated current for a noise filter?
- Answer: To determine the correct rated current for a noise filter, calculate the total current that will flow through the filter under normal operating conditions. This includes the current drawn by all connected devices. Select a noise filter with a rated current that meets or exceeds this value to ensure it can handle the load without overheating or reducing its effectiveness. It is also advisable to allow for a safety margin to accommodate potential increases in load.
- Question: What is the role of a common-mode noise filter?
- Answer: A common-mode noise filter is designed to reduce or eliminate common-mode noise, which is noise that appears equally on multiple lines relative to a common ground. These filters are particularly effective in applications where noise affects all conductors simultaneously, such as in data communication lines and power supply systems. Common-mode noise filters help improve signal integrity and reduce interference with nearby electronic equipment.
- Question: What maintenance is required for noise filters?
- Answer: Noise filters require minimal maintenance, but regular inspections are recommended to ensure they are functioning correctly. Check for any signs of physical damage, overheating, or loose connections. Ensure that the grounding is intact and effective. Periodically test the filter’s performance to verify that it is still effectively attenuating noise. If any issues are detected, replace the filter to maintain system performance and reliability.
- Question: How can noise filters contribute to EMC compliance?
- Answer: Noise filters help achieve electromagnetic compatibility (EMC) by reducing the emission of high-frequency noise and preventing interference with other electronic devices. They help electronic systems meet regulatory standards for conducted and radiated emissions, ensuring that equipment can operate without causing or being affected by electromagnetic interference. Using noise filters is a critical step in designing compliant systems that function reliably in various electromagnetic environments.
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