• MCS-certified products
  • Next Day Delivery
Proteus OUT OF STOCK

PROTEUS 4-Pole Changeover Switch 100A - 3phase

COS-100A-3PH
£292.84 ex VAT £351.41 inc VAT

How many units do you need?

Secure Checkout 14-Day Returns Tracked Delivery
UK StockDispatched from our own warehouse
Trade PricingVolume discounts for installers
Expert SupportSystem design help on request

PROTEUS 4-Pole Changeover Switch 100A - 3phase

PROTEUS 4-Pole Changeover Switch 100A - 3phase
Part No: COS-100A-3PH
Balance of System - Changeover Switch

Introducing the Proteus 100A 4-Pole steel enclosed manual changeover switch - a reliable and efficient solution. Built by Proteus, a trusted name in the industry, this changeover switch is designed to deliver optimal performance.

Use the Proteus changeover switch for selection of one of two supplies to feed a common load or selection of one of two loads fed from a common supply.

Key Features:

  • 100A 4-pole steel enclosed 2 position and off manual changeover switch.
  • Robust enclisure powder coated.
  • Has removable end plates.
Have questions?

Stocked lines ordered before 2pm go out for next-day delivery. UK mainland is typically 1-2 business days, with the Highlands and Islands taking a little longer.

Unused items in their original packaging can be returned within 14 days of delivery. Get in touch first and we'll arrange collection or send a return label.

Yes. Installers get trade rates, and pallet or project quantities are quoted individually - contact us with your requirements.

Prices are displayed ex VAT with the inc VAT figure alongside, so trade customers see the number they work from and everyone can check the total.

Send us the roof layout, the output you're targeting and any existing equipment, and our team will spec a compatible system and flag anything needing G98 or G99 notification.

Larger orders ship palletised on a tail-lift vehicle. Someone needs to be on site to receive it, and delivery is kerbside unless arranged otherwise.

Build your complete solar system

Everything you need in one place.

  • Inverters
  • Batteries
  • Mounting Systems
  • Cabling & Accessories
  • Protection Devices
Build a system
Shipping & Returns

Delivery times vary by region:

  • UK — 1-2 business days
  • Highlands & Islands — 1-2 business days

Returns accepted within 14 days of delivery for unused items in original packaging.