Circuit Breakers (Low Capacity)

Consider When selecting a Circuit Breaker

By carefully considering these factors, you can select the right circuit breaker to protect your electrical system and ensure its reliable operation. Circuit breakers are electrical safety devices designed to protect electrical circuits from damage caused by excess current. They automatically interrupt the flow of electric current when they detect an overload or short circuit, preventing potential fires and equipment damage.

• Voltage Rating: Ensure the breaker's voltage rating matches the system voltage. Consider if the breaker needs to protect against overvoltage conditions.
• Current Rating: Continuous Current Rating: The maximum current the breaker can carry continuously without tripping. Short-Circuit Current Rating (SCCR): The maximum fault current the breaker can safely interrupt.
• Mounting Type: Panel Mount: For installation in control panels or distribution boards. DIN Rail Mount: For easy installation on DIN rails.
• Temperature Range: Consider the operating temperature range of the breaker.
• Vibration and Shock: Select a breaker that can withstand mechanical stress.
• Safety Certifications: UL, CE, or other certifications: Ensure the breaker meets safety standards and regulations.

Frequency of Maintenance for Circuit Breakers

The frequency of maintenance for circuit breakers varies depending on factors such as:

• Environment: Harsh environments (e.g., dusty, humid, or corrosive) may require more frequent maintenance.
• Usage: Frequent operation or exposure to high fault currents can accelerate wear and tear.
• Manufacturer's Recommendations: Always refer to the manufacturer's specific guidelines.

General Maintenance Schedule

Annual Inspection

• Visual inspection for signs of damage, corrosion, or loose connections.
• Check mechanical operation, including handle movement and tripping mechanism.
• Verify calibration of protective relays.
• Clean contacts and terminals.
• Inspect the enclosure for damage and ensure proper sealing.

Periodic Testing

• Conduct routine tests, such as trip tests and insulation resistance tests, to ensure proper functionality.
• Frequency of testing may vary depending on the specific breaker and application.

Replacement

Circuit breakers typically have a long lifespan. However, there may be instances where replacement is necessary

• Physical Damage: If the breaker is physically damaged due to accidents or environmental factors.
• Frequent Tripping: If the breaker trips frequently, it may indicate a problem with the circuit or the breaker itself.
• End of Life: Over time, the components of a circuit breaker may degrade, affecting its performance.

MISUMI does provide technical support for the circuit breakers We have a dedicated technical support team that can assist you with product selection, installation, and troubleshooting.

Recommended Circuit Breakers brand

MITSUBISHI Circuit Breakers

Mitsubishi is a well-respected brand for circuit breakers. They are known for producing high-quality, reliable, and durable products. Mitsubishi circuit breakers are widely used in various industries such as Industrial Automation, Machine Tools, Automotive Manufacturing, Energy and Infrastructure etc. you can purchase MITSUBISHI Circuit Breakers here

MISUMI is a reliable source for purchasing Mitsubishi circuit breakers. Here are some of the benefits. Wide Range of Products, High-Quality Products, Easy Online Ordering, Technical Support, Fast Delivery, Customizable Solutions.

Schneider Electric Circuit Breakers

A global leader in energy management and automation, Schneider Electric provides a comprehensive range of circuit breakers.