OEM OFEU 2P Miniature Circuit Breaker Factory, Supplier

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OEM OFEU 2P Miniature Circuit Breaker Factory, Supplier

The OFEU 2P miniature circuit breaker is an overcurrent protective device that complies with the IEC 60898 standard established by the International Electrotechnical Commission. It is suitable for AC distribution lines with a rated voltage of 415V and a frequency of 50Hz/60Hz. This product provides both overload protection and short-circuit protection functions. When an abnormal current occurs in the circuit, it automatically cuts off the power supply, effectively protecting the safety of the line and connected equipment.

The OFEU 2P circuit breaker uses a 2-pole design, allowing simultaneous control of the live wire and the neutral wire. In low-voltage distribution systems, a 2-pole (2P) circuit breaker offers higher safety compared to a 1-pole (1P) device – when the breaker trips, both poles open at the same time, ensuring that the protected circuit is completely disconnected from the power source and eliminating the risk of a live neutral wire. This feature makes it particularly suitable for applications with high electrical safety requirements.

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Product Description

Frequently Asked Questions

QWhat is a Miniature Circuit Breaker (MCB)?

A Miniature Circuit Breaker (MCB) is an automatically operated electrical switch designed to protect low-voltage electrical circuits from damage caused by excess current, overload, or short circuits.

QWhat is the difference between 1P, 3P, and 4P MCBs?

1P (Single Pole) protects a single phase line, standard for single-phase circuits. 3P (Three Pole) protects three live wires simultaneously for three-phase systems. 4P (Four Pole) protects three phase lines and one neutral line, providing complete circuit isolation.

QHow does an MCB trip during an overload or short circuit?

An MCB uses a bimetallic strip for thermal overload protection (tripping when heated by prolonged excess current) and an electromagnetic coil for instantaneous magnetic protection against short circuits.

QCan an MCB be manually reset after tripping?

Yes, once the electrical fault or overload condition is identified and cleared, the operational lever on the MCB can simply be switched back to the "ON" position.

QHow do I choose the correct MCB current rating?

Select an MCB rating that exceeds the normal operating load current of the circuit but remains lower than the maximum current capacity of the connected wiring to ensure full protection.