BG Electrical Main Switch Isolator 100A Double Pole CUSW100

BG CUSW100-01 — 100A Double Pole Main Switch Isolator

The BG CUSW100-01 is a robust 100 A double-pole main switch isolator designed for reliable isolation of incoming supply feeds in residential, commercial and light-commercial consumer units. Ideal for use as a primary supply disconnect, this isolator ensures circuits can be safely de-energised for maintenance, fault finding and compliance with BS 7671 wiring regulations.

Its compact, 2-module DIN-rail design and positive contact status indication provide clear and dependable performance, while its lockable switch capability offers added safety and control on site.

Safety-First Isolation for Consumer Units

The CUSW100-01 functions as a main switch disconnect and isolator, allowing contractors to quickly interrupt electrical supply without the need to remove fuses or rely on upstream protective devices. Its double-pole switching isolates both live and neutral for full disconnection and improved maintenance safety.

Built for efficient installation in consumer units or enclosures, the device features:

Positive contact status indication — provides a clear visual confirmation of switch position

Lockable ON/OFF positions — accepts a device lock for secure isolation during maintenance

DIN-rail mounting — fits standard 35 mm rails for simple panel integration

Compact 2-module width — maximises available board space

Rated for 230 V / 400 V supply systems and an operating temperature range of -5 °C to +40 °C, it delivers dependable performance in typical installation environments.

Features of the BG Type 2 Single Phase Surge Protection Device:

• 100 A Double Pole Main Switch Isolator — Ideal for Consumer Unit Supply Isolation
• Positive Contact Status Indication for Clear ON/OFF Visibility
• Lockable ON/OFF Positions for Safe Maintenance Lockout
• Double-Pole Switching Disconnects Live and Neutral Feed
• Compact 2-Module DIN-Rail Design Saves Board Space
• Compatible with Standard 35 mm DIN Rails
• Rated for 230 V / 400 V Supplies
• Operating Temperature: -5 °C to +40 °C
• Ten-Year Manufacturer Warranty

View All Main Switches

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