Hager MCB 16A Single Pole Type D Curve NDN116A

Hager NDN116A: 16A Single Pole D Curve Miniature Circuit Breaker (MCB) with 10kA/15kA breaking capacity for demanding inrush current applications.

Safety & Reliability

This Hager miniature circuit breaker protects against both short circuits and sustained overload current, with a trip-free mechanism that prevents the contacts being held closed against a fault. The D curve tripping characteristic is suited to circuits with high inrush currents, such as motors and transformers, reducing nuisance tripping on start-up while still protecting the cable downstream.

Isolation status is unmistakable: the toggle shows a clear green "OFF" position, so anyone working on the circuit can confirm isolation at a glance without guesswork. Rated to BS EN 60898-2 at 10kA and BS EN 60947-2 at 15kA, it gives installers a device that meets both domestic and higher industrial fault-level requirements from a single unit.

Installation & Compliance

A single modular width (1M) keeps this mini circuit breaker compact in the consumer unit or distribution board, and terminals accept up to 25mm² flexible or 35mm² rigid conductors for straightforward first-fix and rewire work alike. An IP20 enclosure rating and pollution degree 2 classification confirm suitability for standard indoor electrical enclosures.

As a like-for-like Hager miniature circuit breaker, the NDN116A is a practical specification choice when upgrading or extending boards that include devices from other manufacturers, including panels originally fitted with a Wylex miniature circuit breaker, provided the board and busbar system are compatible. Rated at 400V AC, 50Hz, with a 500V insulation voltage and 6kV impulse withstand rating, it's built for long-term reliability in general MCB electrical applications.

Control & Access

Beyond protection, the device functions as a manual isolator and control switch for the circuit it serves, letting electricians isolate load safely during maintenance or fault-finding without removing the whole board from service. The operating temperature range down to -25°C means performance is maintained even in unheated plant rooms or exposed enclosures.

Key Features of the Hager NDN116A Miniature Circuit Breaker (MCB) Include:

• Protects Against Short Circuits And Sustained Overload Current
• Trip-Free Mechanism Prevents Contacts Being Held Closed Against A Fault
• D Curve Characteristic Suited To High Inrush Loads Such As Motors
• Clear Green "OFF" Toggle Position Confirms Isolation At A Glance
• Doubles As A Manual Isolator And Control Switch For Maintenance Work
• Connection Capacity: 25mm² Flexible Conductor, 35mm² Rigid Conductor
• Rated Current: 16A, Single Pole
• Breaking Capacity: 10kA (BS EN 60898-2), 15kA (BS EN 60947-2)
• Rated Voltage: 400V AC, 50Hz
• Rated Insulation Voltage: 500V, Impulse Withstand: 6kV
• Ingress Protection: IP20, Pollution Degree 2, Over Voltage Category 3
• Operating Temperature: Down To -25°C
• Width: 1 Modular Spacing (1M)
• Complies With BS EN 60898-2 And BS EN 60947-2
• Supplied Individually, 1 Unit Per Order

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.