This miniature circuit breaker (MCB) is intended for effective protection of electrical circuits within commercial and industrial environments. The 40A MCB incorporates both thermal and electromechanical tripping mechanisms, ensuring dependable operation while safeguarding against overloads and short circuits. Compliant with international standards, it is a key element for maintaining electrical safety and integrity across various applications.

• Current-limiting design enhances protection
• Dual tripping mechanisms simplify overload management
• Rated for a breaking capacity of 10kA for enhanced safety
• Compact dimensions enable straightforward installation on DIN rail
• Suitable for a range of commercial and industrial settings
• Auxiliary contacts available for additional functionalities

• Utilised in commercial electrical installations
• Appropriate for industrial machinery and control systems
• Ideal for protecting lighting circuits and power distribution
• Compatible with auxiliary circuits for operational improvements

It requires mounting on a standard DIN rail with suitable wiring connections.

It responds to prolonged overloads by heating up, which causes the circuit to trip.

Yes, it can be integrated with various circuit protection devices.

Regular visual inspections and testing of the tripping mechanism are recommended.

Yes, auxiliary contacts and shunt trip devices can be installed for expanded capabilities.

BS EN 60898

ABB System Pro M Single & Double Pole MCB's

The Classic & System pro M product cannot be intermixed and do not share common accessories. System pro M products can only be fitted to new style Protecta distribution boards,see typically stock no. 539-1553.