China OFKL 4P Miniature Circuit Breaker Suppliers, Supplier

1 / 3

China OFKL 4P Miniature Circuit Breaker Suppliers, Supplier

OFKL 4P is a 4-pole miniature circuit breaker with rated current 63A and rated voltage 415V~, designed for three-phase four-wire AC 50/60Hz systems. The product is fully developed in accordance with IEC60898 (Circuit-breakers for overcurrent protection for household and similar installations), with a short-circuit breaking capacity of 4500A. The handle is clearly marked with C63 (C-characteristic, 63A rated current). It is suitable for overload and short-circuit protection at the end of distribution lines in residential buildings, commercial premises and light industrial applications.

Send Inquiry

Product Description

Frequently Asked Questions

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, 2P, and 3P Miniature Circuit Breakers?

1P (Single Pole) switches one phase wire, suitable for single-phase circuits. 2P (Double Pole) switches both phase and neutral wires for enhanced protection. 3P (Three Pole) switches all three phase lines, making it ideal for three-phase equipment and commercial power systems.

Where are OFKL Series 1P MCBs typically used?

OFKL Series 1P MCBs are primarily used in residential and light commercial single-phase systems to protect individual branch circuits such as lighting fixtures and small home appliances.

When should I choose a 3P MCB instead of a 1P or 2P MCB?

You should choose a 3P MCB when protecting three-phase electrical loads, such as industrial motors, HVAC equipment, or heavy machinery, ensuring simultaneous disconnection of all three live lines in case of a fault.

How do OFKL Series MCBs provide circuit safety?

OFKL Series MCBs combine thermal mechanism for overload protection and magnetic tripping mechanism for short-circuit protection, quickly disconnecting power to prevent electrical fires and equipment damage.