Rittal NH fuse load disconnector RX 9362110 Group 1 250A 3-pole screw connection

Rittal RX 9362110 is an NH fuse load disconnector designed for Group 1 NH fuses with a rated current of 250 A. The three-pole unit provides secure screw-type conductor connections and is intended for switching, isolating and protecting fused circuits in industrial switchgear and distribution panels. It is suitable for installation in electrical cabinets where a compact, robust load disconnector is required for routine maintenance and safety procedures.

Advantages

The device combines a clear switching mechanism with screw connections that ensure reliable conductor termination under vibration and thermal cycling. Its three-pole design allows simultaneous switching of all phases, reducing operational steps during isolation. The compact form factor supports space-efficient mounting in distribution boards while maintaining accessibility for operation and fuse replacement.

Suitable for

• Industrial electrical panels and distribution boards requiring Group 1 NH fuse switching
• Maintenance and isolation tasks in production facilities and commercial buildings
• Switchgear assemblies where a screw-connection three-pole load disconnector is specified
• Applications needing a 250 A rated fuse disconnect solution for protection and service work

When it may not be suitable

This unit is intended specifically for Group 1 NH fuse systems and a rated current of 250 A; it may not be suitable where different NH fuse groups or other rated currents are required. It is not a replacement for devices with alternative connection methods (for example, spring-clamp or busbar-mounted disconnectors) if such connection types are mandated by the installation.

Key specifications

• Number of poles: 3
• Rated current: 250 A
• Fuse type compatibility: Group 1 NH fuses
• Connection type: Screw terminal connections for conductors
• Function: Load disconnector for switching and isolation of fused circuits
• Mounting: Panel/switchgear mounting suitable for distribution cabinets

How to use

Install the load disconnector in accordance with electrical schematics and applicable standards, ensuring the device is mounted securely in the intended panel location. Connect phase conductors to the screw terminals, tightening to the manufacturer-recommended torque to ensure reliable contact. Use the switching handle or mechanism to open the circuit before performing any maintenance; confirm the circuit is de-energized with appropriate testing instruments. Replace fuses only when the disconnector is in the open/isolated position and follow lockout/tagout procedures where required.

What to consider before purchase

• Confirm compatibility with Group 1 NH fuse size and the required 250 A rating for your application
• Verify available panel space and mounting method in the target switchgear or distribution board
• Ensure screw-terminal connection style matches your conductor types and cross-sections
• Check applicable local electrical standards and installation regulations

Usage recommendations

For safe and reliable operation, use a calibrated torque driver for screw terminals, follow all local electrical codes during installation, and perform periodic inspections of connections and fuses to detect signs of overheating or loosening.