OEM OFKL Series 1P Miniature Circuit Breaker Factory, Manufacturers

1 / 3

OEM OFKL Series 1P Miniature Circuit Breaker Factory, Manufacturers

The OFKL series single-pole (1P) miniature circuit breaker is a single-phase overcurrent protection device strictly designed and manufactured in accordance with international electrotechnical standards. The core task of this device is to provide accurate and reliable overload and short-circuit protection for single-phase final circuits in low-voltage distribution systems, thereby effectively reducing the risk of equipment damage and electrical fire caused by line faults. As a basic protection component, this series of products is widely used in the end-user distribution circuits of various electrical installations, and is of great significance for ensuring electrical safety.

Send Inquiry

Product Description

Frequently Asked Questions

Q What is a Miniature Circuit Breaker (MCB)?

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

Q What is the difference between 2P, 3P, and 4P MCBs?

The "P" indicates the number of poles. A 2P MCB protects two lines, a 3P MCB is designed for three-phase power systems without a neutral line, and a 4P MCB provides protection for three phase lines as well as the neutral line.

Q When should I use a 3P Miniature Circuit Breaker?

3P MCBs are primarily used in three-phase electrical systems commonly found in commercial and industrial environments to safeguard three-phase motors and heavy electrical machinery.

Q What is the primary function of a 4P MCB?

A 4P MCB is designed for three-phase systems where full isolation of the neutral conductor is required alongside all three active phases for enhanced electrical safety during maintenance.

Q How do I choose the correct MCB rating for my application?

Choosing the proper MCB depends on the operating current of the connected devices, cable size, and load characteristics. Always ensure the MCB rating does not exceed the safe current capacity of your electrical wiring.