Eaton 630 A Fuse Holder, 3P-Pole for NH3

This fuse holder is a three-pole NH3 device designed for mounting on DIN rail or a mounting plate to manage and isolate high current NH fuse-links in industrial switchgear. It provides a front-side actuator for manual operation and includes optical signalling for triggered fuses, enabling clear status indication within electrical distribution assemblies.

• Rated uninterrupted current 630A for sustained heavy loads
• Rated insulation voltage 800V AC for high-voltage applications
• Conditioned short-circuit rating 120 kA to withstand fault currents
• Sliding inspection windows permit voltage testing without opening
• Box Terminal accepts 95 to 300mm² single lugs for large conductors
• IP20 operating protection and IP10/IP2XC safeguards during access

• Suitable for low-voltage switchgear incorporating NH3 fuses
• Ideal for industrial power distribution panels requiring 630A devices
• used with busbar and copper strip connections in electrical rooms
• Can be used for service isolation in manufacturing plants
• Suitable for ground- or floor-mounted distribution enclosures

The box Terminal supports 95 to 300mm² single cable lugs and clamp Terminals accept up to 300 mm²

It features sliding inspection windows allowing voltage tests while the fuse unit remains installed and the cover is in place, reducing exposure during checks.

The mechanism is specified for around 800 mechanical operations and the electrical switching life cycle is rated for approximately 200 operations.

The ambient operating range spans -25 °C to 55 °C and the material has a heat deflection temperature of 125 °C, supporting standard industrial conditions.