Hager MCB 16A Triple Pole Type D Curve NDN316A

Hager NDN316A: 16A 3 Pole D Curve Miniature Circuit Breaker (MCB) with 10kA breaking capacity and a compact 3 module width for DIN rail enclosures.

Safety & Reliability

This mini circuit breaker combines short circuit protection, overload protection, and isolation in a single trip-free mechanism, so a fault always disconnects the circuit even if the toggle is held in. The green "OFF" mechanical indicator on the toggle gives installers and end users a clear, unmistakable visual confirmation that isolation has been achieved before working on the circuit.

Built for Demanding Loads

The D curve tripping characteristic is suited to circuits with high inrush currents, such as motors, transformers, and welding equipment, tolerating brief current surges without nuisance tripping. Rated short-circuit breaking capacity reaches 10kA to BS EN 60898-2 and 15kA to BS EN 60947-2, giving this Hager miniature circuit breaker (MCB) the fault-current headroom needed on industrial and commercial distribution boards.

Installation & Compliance

Terminals accept up to 25mm² flexible or 35mm² rigid conductors, giving electricians flexibility when wiring larger loads without changing device type. As a fully compliant Hager mini circuit breaker, it is tested to BS EN 60898-2 and BS EN 60947-2, with an IP20 enclosure rating and 500V rated insulation voltage for safe use in standard distribution boards.

Space-Saving 3-Module Design

At just 3 modular spacings wide, this MCB electrical device fits compact consumer units and distribution boards where panel space is limited, letting contractors maximise circuit density without upgrading enclosure size.

Key Features of the Hager NDN316A Include:

• Protects Against Short Circuits And Overload Current In One Device
• Trip-Free Mechanism Ensures Disconnection Even If Toggle Is Held On
• Clear Green “OFF” Indicator Confirms Safe Isolation
• D Curve Rating Suits Motors, Transformers And High Inrush Loads
• Accepts 25mm² Flexible Or 35mm² Rigid Conductors
• Compact 3 Module Width Saves Panel Space
• Rated Current: 16A
• Rated Voltage: 400V AC, 50Hz
• Poles: 3 Pole (Triple Pole Switched)
• Breaking Capacity: 10kA (BS EN 60898-2), 15kA (BS EN 60947-2)
• Rated Insulation Voltage: 500V
• Rated Impulse Withstand Voltage: 6kV
• Ingress Protection: IP20
• Operating Temperature: -25°C Minimum
• Compliance: BS EN 60898-2, BS EN 60947-2
• Supplied As: Single Unit