Hager MCB 63A Single Pole Type D Curve NDN163A

Hager NDN163A: 63A 1 Pole D Curve Miniature Circuit Breaker (MCB) with 10kA/15kA short-circuit breaking capacity for demanding load applications.

Safety & Reliability

This mini circuit breaker protects circuits against both short circuits and overload current, with a trip-free mechanism that prevents the toggle from being held closed during a fault condition. That means the circuit disconnects reliably even if someone tries to override it, keeping your installation and downstream equipment protected.

The D curve tripping characteristic is built for circuits with high inrush currents, such as motors and transformers, so nuisance tripping is minimised while fault protection stays intact. Rated short-circuit breaking capacity is 10kA to BS EN 60898-2 and 15kA to BS EN 60947-2, giving installers flexibility to meet the required standard for the job.

Clear Isolation & Easy Identification

The isolation state is shown clearly through the toggle's mechanical "OFF" position, marked in green, so electricians can visually confirm isolation at a glance without testing. This speeds up safe isolation procedures on site and reduces the risk of working on a live circuit.

Installation & Compliance

A single modular width (1 module) keeps this Hager miniature circuit breaker compact in the consumer unit or distribution board, saving space where multiple ways are required. Terminal connection capacity of 25mm² flexible or 35mm² rigid conductor covers typical 63A circuit wiring without adapters.

Rated at 400V AC, 50Hz with IP20 ingress protection, this MCB electrical device is built for use inside enclosed distribution equipment. It conforms to BS EN 60898-2 and BS EN 60947-2, giving contractors the documentation needed for certification and sign-off, whether specifying a Hager miniature circuit breaker or a wylex miniature circuit breaker as an alternative on the same board.

Key Features of the Hager NDN163A Miniature Circuit Breaker Include:

• Protects Against Short Circuits And Overload Current
• Trip Free Mechanism Prevents Toggle Override During A Fault
• Green "Off" Toggle Position Gives Clear Visual Isolation Confirmation
• D Curve Characteristic Suited To High Inrush Loads Such As Motors
• Compact Single Module Width Saves Space In The Distribution Board
• Rated Current: 63A
• Rated Voltage: 400V AC, 50Hz
• Short-Circuit Breaking Capacity: 10kA (BS EN 60898-2) / 15kA (BS EN 60947-2)
• Rated Insulation Voltage: 500V
• Rated Impulse Withstand Voltage: 6kV
• Ingress Protection: IP20
• Connection Capacity: 25mm² Flexible / 35mm² Rigid Conductor
• Operating Temperature: -25°C Minimum
• Conforms To: BS EN 60898-2 And BS EN 60947-2
• What's In The Box: 1 x Hager NDN163A Single Pole MCB

If you need some help, would like to take advantage of our Price Promise or have a large order to place, give our team of professionals a call on 0203 994 5470, drop us an email at sales@electricpoint.com or use our Contact Form.