China OFIS-DS Series C63 2P Miniature Circuit Breaker Factories, Supplier

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China OFIS-DS Series C63 2P Miniature Circuit Breaker Factories, Supplier

The OFIS-DS Series C63 2P Miniature Circuit Breaker (MCB) is a double-pole protection device designed for modern low-voltage terminal distribution circuits. It delivers reliable overload and short-circuit protection for single-phase circuits, characterized by precise performance, broad applicability, authoritative certifications, and ease of maintenance.

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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 an electrical circuit from damage caused by excess current, typically resulting from an overload or short circuit.

What is the difference between 1-Pole, 3-Pole, and 4-Pole MCBs?

A 1-Pole MCB protects a single live phase line, suitable for standard residential circuits. A 3-Pole MCB protects three phase lines commonly used in commercial and industrial three-phase systems. A 4-Pole MCB protects three phase lines plus the neutral line, providing complete isolation.

What does the "C63" specification mean on a circuit breaker?

"C" refers to the tripping characteristic curve, which trips between 5 to 10 times the rated current (ideal for commercial and inductive loads). "63" represents the rated current capacity of 63 Amperes.

How do I choose the correct MCB for my electrical setup?

You should select an MCB based on the total load current of your circuit, the system voltage, the number of poles required, and the specific application environment (residential, commercial, or industrial).

Can these circuit breakers be used for DC electrical systems?

Standard AC MCBs should not be used for DC applications unless specified by the manufacturer, as DC arcs are harder to extinguish than AC arcs. Always select designated DC circuit breakers for solar or DC systems.