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What It Is — Miniature Circuit Breaker (MCB)

A Modular MCB (Miniature Circuit Breaker) is an automatic electrical safety device that protects your wiring and appliances from damage due to overload (too much current over time) or short-circuit (sudden excessive current). It acts like a reusable fuse — tripping (turning OFF) when current exceeds safe levels, and allowing easy manual reset once the fault is cleared.

The Orbit Express 16 A Modular MCB is specifically a 1-module, single-pole breaker in a compact white housing, designed to fit standard modular electrical panels and distribution boards — giving a neat, professional installation.

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Key Specifications

Rated Current: 16 A — suitable for circuits expected to carry up to around 16 amps safely (common for general purpose circuits).

Type: Single-Pole (SP) — interrupts the live phase conductor in a single-phase AC circuit.

Module Width: 1 Module (compact width for modular panels).

Voltage: 240 V AC (standard household mains).

Colour/Finish: White — easy to blend in standard consumer units and switchgear panels.

Trip Characteristic: Usually C-curve type — offers reliable protection for general circuits, including lighting, sockets, and moderate inductive loads (like small motors/fans).

Warranty & Build: Comes with manufacturer terms; durable polycarbonate/plastic build to suit electrical panels.

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What It Does — Protection Functions

A 16 A modular MCB like this performs:

Overload Protection — Cuts the circuit if the current stays above 16 A for too long, preventing cable/wire overheating.
Short-Circuit Protection — Trips very quickly if a fault causes a sudden spike in current (e.g., accidental direct contact between live and neutral).
Manual Reset — After tripping, you can switch it back ON without replacing anything (unlike fuses).

It doesn’t protect against earth-leakage — for that you’d combine it with an RCCB/RCD device upstream.

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Typical Use-Cases

This 16 A modular MCB is commonly used in:

Residential Distribution Boards — protecting circuits for sockets/plug points.

Office & Commercial Spaces — light power circuits that need reliable overcurrent protection.

Appliance Circuits — fan banks, lights, small air-conditioners, refrigerators or other loads drawing within ~16 A.

Modular Panels with other breakpoints — it integrates flush with plates and other modular devices.

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What to Keep in Mind

MCB ≠ safety switch/earth leakage protection — It protects against overload/short circuit only. Use an RCCB or ELCB for earth-fault/leakage safety.

Proper cable sizing is essential — Even if the breaker is rated 16 A, the wiring and socket ratings must match the intended load.

Not suitable for heavy industrial loads — Very heavy equipment often requires higher rated breakers or purpose-built protective devices.

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In Summary

The Orbit 16 A Modular MCB (White) is a compact, single-pole circuit protection device for modular electrical panels — ideal for general electrical circuits up to 16 amps. It automatically trips on overloads/short circuits and is easy to reset, helping safeguard household or small commercial wiring.