Hager MCB 50A Single Pole Type B Curve NBN150A

Hager NBN150A: 50A Single Pole Type B Miniature Circuit Breaker (MCB) with 10kA/15kA breaking capacity for reliable overload and short circuit protection.

Safety & Reliability

This Hager miniature circuit breaker uses a trip-free mechanism, so the contacts cannot be held closed during a fault, even if someone forces the toggle. Combined with dedicated overload and short circuit protection, it keeps the protected circuit and downstream equipment safe from damage.

Isolation status is easy to confirm at a glance: the toggle shows a green "OFF" position when the mcb electrical device is switched out, reducing the risk of working on a live circuit by mistake.

Installation & Compliance

A single module width keeps this hager miniature circuit breaker compact in busy consumer units and distribution boards, while connection capacity of 25mm² flexible or 35mm² rigid conductor covers common installation needs without adapters. It's tested to BS EN 60898-2 for 10kA and BS EN 60947-2 for 15kA, giving installers a documented basis for compliance sign-off.

Robust Performance In Demanding Conditions

Rated for continuous operation down to -25°C, this mini circuit breaker holds its rating in cold plant rooms, garages, and outbuildings as well as standard indoor enclosures. A current limiting class of 3 and 6kV impulse withstand voltage add an extra margin against transient surges on the supply.

Key Features of the Hager NBN150A Miniature Circuit Breaker (MCB) Include:

• Protects Against Overload Current & Short Circuits In A Single Device
• Trip-Free Mechanism Stops Contacts Being Held Closed During A Fault
• Green "Off" Toggle Position Gives Clear Visual Isolation Confirmation
• Type B Tripping Curve Suited To Resistive & Low Inrush Circuits
• High Breaking Capacity: 10kA (Icn) BS EN 60898-2
• High Breaking Capacity: 15kA (Icu) BS EN 60947-2
• Rated Current: 50A
• Rated Voltage: 400V AC
• Frequency: 50Hz
• Single Pole (1P), 1 Module Width For Compact Enclosures
• Connection Capacity: 25mm² Flexible Conductor
• Connection Capacity: 35mm² Rigid Conductor
• Ingress Protection Rating: IP20
• Minimum Operating Temperature: -25°C
• Complies With BS EN 60898-2 & BS EN 60947-2
• Supplied As A Single Unit

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.