The Mersen NH fuse switch disconnector combines overcurrent protection with on-load isolation for low voltage electrical systems. It's available in four sizes, 00 through 3, covering currents up to 630A, giving installers a single range to specify across most switchboard and distribution jobs.

Key features

• Size range, 00, 1, 2 and 3, covering currents up to 630A
• Pole configurations, sizes 00 and 1 available as single, double, triple and quadruple pole
• Combined function, fuse protection and on-load circuit disconnection in one unit
• Modular construction, uniform range across all sizes

Applications

These disconnectors are used for low voltage switchboard and distribution fuse protection, and for main and sub-circuit protection in commercial and industrial installations. They also suit battery and DC bus protection in large off-grid and hybrid solar systems, where a fused isolation point is needed on the DC side.

Installation notes

Installation must be carried out by a qualified electrician. Choose the correct size and pole configuration for the application, and make sure the fuse rating matches the connected cable and load.