⚡ Circuit Breaker

MCCB

A Moulded Case Circuit Breaker (MCCB) is a higher-capacity breaker for main incomers and larger circuits, protecting against overload and short circuit with higher current ratings and breaking capacity than an MCB. Many models offer adjustable trip settings.

Request a quote Estimate quantities

⚠️ Note: Rating, breaking capacity and settings must be coordinated by a qualified engineer per local regulations; values are typical/indicative and vary widely by frame size and model.

Typical specification

Property	Typical value
Type	Moulded Case Circuit Breaker (thermal-magnetic or electronic trip)
Protects against	Overload and short circuit
Current rating	Typically 16-1600 A (often adjustable)
Breaking capacity	Typically 25-70+ kA (Icu)
Poles	3P or 4P (also 2P)
Trip curve	Adjustable/fixed thermal-magnetic or electronic trip unit
Standard	IEC/EN 60947-2

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 Confirm the final spec sheet before ordering; we do not publish fixed prices, request a quote for current offers.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

Main incomers, sub-distribution boards, and larger feeders in apartment blocks, commercial premises, and light industrial supplies.

What to specify when you request a quote

Rated current (In) and any adjustable trip range required
Breaking capacity (Icu/Ics) matched to the prospective fault current
Number of poles (3P/4P) for the three-phase supply
Trip unit type (thermal-magnetic or electronic) and accessories needed

Related in Circuit Breaker

MCB RCCB RCBO Surge Protector ← All circuit breaker

FAQ

When is an MCCB used instead of an MCB?

MCCBs are used for higher current ratings and fault levels, typically as main switches or feeders, where an MCB's capacity would be exceeded.

Are MCCB trip settings adjustable?

Many MCCBs allow adjustment of the overload (and sometimes short-circuit) trip settings, which must be configured to protect the specific circuit and coordinate with downstream devices.

Request a MCCB quote

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

Get a Quote