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No-Fuse Breaker (JIS Product) WS Series NF-F Type

No-Fuse Breaker (JIS Product) WS Series NF-F Type

Smallest class of breakers in the world.
· Vertical dimension 72 mm. Can be mounted to IEC 35 mm rail standard.
· Product lineup with same external shape for 30 to 50 A frames.
· Earth leakage breaker handles higher harmonics and surges.
· Can mount AL and AX vertical lead wire terminal block.
· Can perform simple back surface wiring / front plate mounting.
· Optimal for branch circuits for machinery.

WS Series NF-F Type No-Fuse Breaker Specifications

Outline drawing

Outline drawing

Frame A3050
Type NameNF30-FANF50-FA
Rated Current In A
Standard Ambient Temperature 40°C
5 10 15 20 305 10 15 20
30 40 50
Number Of Contacts2323
Rated Insulation Voltage Ui V250250

JIS C8201-2-1
Ann.1 Ann.2
AC200 V2.5/1 (Note 1)2.5/1 (Note 1)
DC65 V1.5/11.5/1
Rated Impulse Withstand Voltage Uimp (kV)2.52.5
Current TypeAC/DC sharedAC/DC shared
Isolation Compliant--
Reverse Connections--
Switch Life Span (Times)Mechanical10,00010,000
Electrical (220 V AC)6,0006,000
Selectability Type (Usage Category)AA
Degree Of Contamination22

Product weight kg0.

IEC 35 mm RailPossiblePossible
Mounting Screw (Note 2)PossiblePossible
Surface Plate Installation (Note 4)PossiblePossible

Front Surface Type◎ (For crimp terminals)◎ (For crimp terminals)
Simple Back Surface Shape (Note 5)

Alarm Switch (AL)
Auxiliary Switch (AX)
Shunt Trip (SHT)
Vertical Lead Terminal Block (SLT)
Parts sold

Lock Cover (LC)
Handle Lock (HL)
Terminal Cover, Small (TC-S)
Terminal Cover For Surface Plate Mounting (RTC)
Electrical Appliance And Material Safety LawCompliantCompliant
CE Mark--
CCC Certification--
Overcurrent Tripping MethodThermalThermal
Trip Button-(Note 3)- (Note 3)

(Note 1) The rated breaking capacity is 1.5/1 kA for parts with 5 A rated current.
(Note 2) The customer must provide the mounting screws. Use SW-PW-P pan-head screws (M4 × 0.7 × 50).
(Note 3) Only included when an alarm switch (AL) is provided (excluding SHT + AL).
(Note 4) Can install surface plate without tightening nuts from the back (The customer must provide the mounting screws M5 × 0.8 × 30). Here, terminal screws can be tightened from the back of the breaker.
(Note 5) The terminal structure allows back surface wiring.

WS Series NF-F Type No-Fuse Breaker Dimensional Outline Drawing

Dimensional outline drawing

Dimensional outline drawing

Part Number
NF30-FA 3P 15A
NF30-FA 3P 20A
NF30-FA 3P 30A
Part NumberVolume DiscountDays to Shipวันจัดส่งRoHSRated Current
Same day 615
Same day 620
Same day 630

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Basic Informationข้อมูลพื้นฐาน

Ampere frame 30AF Rated block capacity, voltages except VAC 100/200/400, VDC 250 Available Number of Poles 3
Mounting Method DIN/Screw retention Connection Method Surface type Representative Standard PSE
Dimension height(mm) 72 Dimension width(mm) 60 Dimension depth(mm) 73.5
Type No fuse breaker (standard product) Motor breaker(Apply) Not applicable Rated block capacity AC 220 V(kA) 2.5

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