Hager NCN325 3-Pole Miniature Circuit Breaker 25A 10kA

The Hager NCN325 is a professional-grade 3-pole miniature circuit breaker (MCB) engineered to provide dependable protection for electrical circuits in both residential and commercial environments. This device is specifically designed to safeguard electrical systems against the risks of overloads and short circuits, ensuring the integrity of your wiring and connected equipment. With a robust build quality, it offers consistent performance and efficient power management for 400V AC electrical installations.

Advantages

The primary benefit of this circuit breaker is its high breaking capacity of 10kA, which allows it to safely interrupt significant fault currents, thereby preventing damage to the electrical infrastructure. Its 3-pole configuration makes it an ideal choice for three-phase power systems, providing simultaneous disconnection of all phases for enhanced safety. The device is built to withstand demanding operational conditions, ensuring long-term reliability and minimal maintenance requirements for your electrical distribution board.

Suitable for

• Three-phase residential electrical panels
• Commercial building power distribution systems
• Protection of industrial machinery and equipment
• General electrical installations requiring 25A current capacity

When it may not be suitable

This circuit breaker is not intended for use in single-phase electrical systems, as it is specifically designed for 3-pole applications. Furthermore, it should not be used in circuits where the load requirements exceed the 25A rated current, as this would lead to frequent nuisance tripping.

Key specifications

• Number of poles: 3
• Rated current: 25A
• Breaking capacity: 10kA
• Rated operational voltage: 400V AC
• Tripping characteristic: C-type

How to use

The Hager NCN325 is designed for mounting onto a standard DIN rail within an electrical distribution board. Installation should be performed by a qualified electrician to ensure all connections are secure and compliant with local electrical regulations. Once installed, the device operates automatically to monitor the circuit; in the event of an overload or short circuit, the toggle switch will move to the off position. To restore power after the fault has been identified and resolved, simply flip the switch back to the on position.

What to consider before purchase

• Verify that your electrical system requires a 3-pole device
• Ensure the 25A rating matches your circuit load requirements
• Check that the 10kA breaking capacity is sufficient for your installation's prospective short-circuit current
• Confirm compatibility with your existing DIN rail distribution board

Usage recommendations

Always ensure that the power supply is completely disconnected before attempting to install or replace any circuit protection device. Regularly inspect the distribution board for signs of wear or loose connections to maintain optimal safety levels.