China OFIS-125A Series 2P Miniature Circuit Breaker Factories, Manufacturers

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China OFIS-125A Series 2P Miniature Circuit Breaker Factories, Manufacturers

The OFIS-125A Series 2P Miniature Circuit Breaker is a double-pole protection device engineered for low-voltage single-phase (line + neutral) distribution circuits where a higher safety level and complete circuit isolation are required. Its primary function is to simultaneously disconnect both the line (L) and neutral (N) conductors. This provides comprehensive overload and short-circuit protection for electrical equipment, wiring, and personnel, while ensuring safe electrical isolation. It is particularly suited for applications with stringent power supply safety requirements or where complete de-energization is necessary for maintenance.

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Product Description

OFIS-125A Series | C63 1P Miniature Circuit Breaker

OFIS-125A Series 3P Miniature Circuit Breaker

OFIS-125A Series | 4-Pole Miniature Circuit Breaker

Frequently Asked Questions (FAQ)

What 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 overload or short circuits.

What is the difference between 1P, 3P, and 4P circuit breakers?

1P (Single Pole) protects one single phase line, standard for basic applications. 3P (Three Pole) protects three phase lines simultaneously, suitable for commercial or industrial machinery. 4P (Four Pole) protects three phase lines plus the neutral line for enhanced circuit protection.

What does the "C63" rating mean on an MCB?

The "C" designation indicates a tripping curve suited for commercial and general electrical loads (tripping at 5 to 10 times rated current), while "63" represents the maximum rated operating current of 63 Amperes.

Can an MCB be reset after it trips?

Yes, unlike traditional one-time fuses, MCBs are reusable. Once the electrical fault or overload is cleared, you can simply switch the operating lever back to the "ON" position.

What applications are best suited for the OFIS-125A Series MCB?

The OFIS-125A Series is designed for residential, commercial, and industrial power distribution systems requiring reliable overload and short-circuit protection for equipment and wiring safety.