Miniature Circuit Breaker Ace (MCB)

Miniature Circuit Breaker Ace (MCB)
In various industrial, commercial and residential applications, the Axiom Ace MCB series is designed to protect against overcurrent and short circuits reliably. It delivers high breaking capacity for the swift interruption of short circuits — preventing equipment damage — while combining energy efficiency through low power consumption with robust performance.
The ACE series features a cutting-edge design with a state-of-the-art mechanism offering fast operation and tremendous breaking capacity. Independent manual operation gives the user full control, while the advanced mid-trip feature guarantees safe and secure operation. Flame-retardant materials make up the housing and cover, and installation is simple thanks to a novel DIN-rail clip, dual bus-bar/cable connection capability and large cable connectors. Simple installation reduces both time and labour cost, and the design facilitates straightforward maintenance throughout the product lifecycle.
Key features
- 100% virgin plastic, flame-retardant body and cover
- Unique dual-step snap pusher mechanism
- Mid-trip indication for clear fault status
- Positive contact (trip-free) operation
- Large incoming terminal — up to 35 sq mm capacity
- Transparent ON–OFF indicator window
- Dual connection — both bus bar and cable
- Novel DIN-rail clip for simple mounting
Technical specifications
| Specification | Details |
|---|---|
| Standard | IS/IEC 60898-1:2015 |
| Protection | IP 20 |
| Terminal capacity | Up to 35 sq mm |
| Mounting | 35 mm DIN rail |
Recommended applications
Final circuits in industrial, commercial and residential installations — protecting lighting, sockets and equipment against overload and short circuit.
Frequently asked questions
An MCB protects electrical circuits against overload and short-circuit faults by automatically cutting off the supply, limiting damage and hazards.
Axiom Ace MCBs are built to IS/IEC 60898-1:2015 with breaking capacities suited to residential, commercial and industrial circuits.
Mid-trip means the toggle rests in a middle position when the breaker trips on a fault, clearly distinguishing a fault trip from a manual OFF.
The large incoming terminal accepts conductors up to 35 sq mm for secure, low-resistance connections.
Yes. Axiom MCBs mount on standard 35 mm DIN rail for quick, tool-light installation in distribution boards.
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