Hager MCB 10A Triple Pole Type D Curve NDN310A

Hager NDN310A: 10A 3 Pole D Curve Miniature Circuit Breaker (MCB) with 10kA breaking capacity and 3 module width for compact panel installations.

Reliable Circuit Protection

This mini circuit breaker protects circuits against both overload current and short circuits, with a trip-free mechanism that prevents the breaker being held closed during a fault. That means the circuit disconnects safely even if someone tries to override the switch, keeping installers and end users protected.

Clear Isolation & Control

A mechanical toggle shows a clear green "OFF" position when isolated, so electricians can confirm circuit status at a glance during maintenance or fault-finding. This mcb electrical device gives positive, visible isolation rather than relying on guesswork, reducing the risk of working on a live circuit.

Installation & Compliance

Connection capacity covers 25mm² flexible and 35mm² rigid conductors, giving flexibility for a range of cable sizes on site. The device conforms to BS EN 60898-2 (10kA) and BS EN 60947-2 (15kA), so it meets recognised standards for both domestic and industrial applications. As a Hager miniature circuit breaker, it's built to slot into standard 3-module consumer unit and distribution board space, keeping panel layouts compact.

Built for Demanding Loads

The D curve tripping characteristic suits loads with high inrush currents, such as motors and transformers, without nuisance tripping on start-up. Rated at 10A with a 400V rating across 3 poles, this miniature circuit breaker is suited to three-phase distribution circuits where reliable, standards-compliant protection is essential.

Key Features of the Hager Miniature Circuit Breaker NDN310A Include:

• Protects Against Overload Current And Short Circuits
• Trip-Free Mechanism Prevents Override During A Fault
• Clear Green "OFF" Mechanical Isolation Indicator On Toggle
• D Curve Tripping Characteristic Suited To High Inrush Loads
• Connection Capacity: 25mm² Flexible / 35mm² Rigid Conductor
• Rated Current: 10A
• Rated Voltage: 400V AC (50Hz)
• 3 Pole, 3 Module Width
• Rated Short-Circuit Breaking Capacity Icn: 10kA (BS EN 60898-2)
• Rated Short-Circuit Breaking Capacity Icu: 15kA (BS EN 60947-2)
• Degree Of Protection: IP20
• Ambient Operating Temperature: -25°C Minimum
• Conforms To BS EN 60898-2 (10kA) And BS EN 60947-2 (15kA)
• Supplied As Single Unit 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.