⚡ Circuit Breaker

MCB

A Miniature Circuit Breaker (MCB) is a DIN-rail device that automatically disconnects a circuit on overload or short circuit, protecting the cable and downstream equipment. It is the standard breaker for final circuits in residential distribution boards.

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⚠️ Note: Selection, sizing and installation must follow local wiring regulations and be carried out by a qualified electrician; ratings shown are typical/indicative.

Typical specification

Property	Typical value
Type	Miniature Circuit Breaker (thermal-magnetic)
Protects against	Overload and short circuit
Current rating	Typically 6-63 A
Breaking capacity	Typically 6-10 kA (Icn)
Poles	1P, 1P+N, 2P, 3P, 4P
Trip curve	B, C, or D
Standard	IEC/EN 60898-1

Indicative / typical values for planning — actual products vary by manufacturer and standard. Confirm the final spec sheet before ordering; we do not publish fixed prices, request a quote for current offers.

Applications

Lighting, socket, and appliance final circuits in homes and light commercial distribution boards.

What to specify when you request a quote

Rated current (In) matched to the circuit cable and load
Trip curve (B for lighting/resistive, C general, D for motor/inductive inrush)
Breaking capacity (kA) adequate for the fault level at the board
Number of poles for single- or three-phase supply

Related in Circuit Breaker

RCCB RCBO MCCB Surge Protector ← All circuit breaker

FAQ

Does an MCB protect against electric shock?

No. An MCB protects cabling against overload and short circuit but does not detect earth leakage; use an RCCB or RCBO for shock/earth-fault protection.

How do I choose the current rating?

Size the MCB so its rating is at or below the current-carrying capacity of the protected conductor and above the normal load current, following the wiring regulations.

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Send your sizes and quantities (or your floor plan) — our team specs and supplies against it.

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