Circuit breaker Hager 3-pole 25A type C 6 kA MC325A

Hager MC325A is a 3-pole circuit breaker rated for 25 A with a type C tripping characteristic and a rated breaking capacity of 6 kA. It is designed to protect three-phase circuits from overloads and short circuits in electrical distribution systems. The compact device fits standard DIN-rail distribution boards and is intended for use in commercial and residential installations where selective C-characteristic protection is required.

Advantages

The circuit breaker provides reliable thermal-magnetic protection with a type C curve that balances sensitivity to moderate inrush currents and protection against short circuits. With a 6 kA interrupting capacity, it meets typical requirements for distribution boards in small commercial and domestic networks. The three-pole design ensures simultaneous disconnection of all phases, improving safety and minimizing phase imbalance during fault conditions.

Suitable for

• Protection of three-phase feeder circuits in homes and small commercial premises
• Motor and lighting circuits with moderate inrush currents
• Distribution boards requiring selective C-characteristic breakers
• Replacement or upgrade of existing three-pole protective devices in distribution panels

Key specifications

• Poles: 3-pole
• Rated current: 25 A
• Tripping characteristic: Type C (thermal-magnetic)
• Breaking capacity: 6 kA (rated short-circuit capacity)
• Mounting: DIN-rail compatible
• Application: Three-phase circuit protection (overload and short circuit)

How to use

Install the circuit breaker on a standard DIN-rail inside a distribution board following local wiring regulations and safety standards. Connect the three phase conductors to the input terminals and the load conductors to the output terminals, ensuring secure torque on terminal screws. Verify correct polarity and phase sequence where required. After wiring, switch the device on and test the circuit under normal load conditions. Periodically inspect terminals and function by using appropriate test procedures to confirm reliable operation.

Usage recommendations

Use this breaker in installations where a moderate inrush tolerance is needed, such as motor starters and lighting circuits. Ensure coordination with upstream and downstream protective devices to maintain selectivity and consult applicable electrical standards when integrating into existing systems.