St Aloysuis Automatic Transfer Switches

Low Voltage Automatic Transfer Switches

Low Voltage Motorised and Manual Bypass Switches

Shaw Automation Ltd manufacture a range of enclosed transfer and bypass switches

  • Manual Transfer and changeover switches
  • Automatic transfer and changeover switches
  • Manual Bypass switches
  • Motorised bypass switches

The units supplied for the St Aloysuis project were rated at 250A and were a combination unit with Automatic Transfer and Manual Bypass Switches.

Automatic transfer and changeover switches

Manual Transfer and changeover switches

Manual Bypass switches


Automatic transfer of two supply sources to ensure continuity of supply to critical loads:-

Sprinkler systems

Fire Fighting Equipment


Water pumps

Essential Services

Guaranteed continuity of the power supply during maintenance and test operations. Complete isolation of the Automatic Transfer Switch ensuring maintenance safety.

The products are manufactured utilising ABB components to provide a Quality and fully certified product.

These elements have been designed and manufactured into a composite power and control system that satisfies the requirements of all stakeholders.

Switchboards are manufactured to EN 61439-2 with full design verification.

Using the ABB range of products, Shaw automation were able to provide a competitive package with the full support of the Hager organisation.

General characteristics

  • From 40 to 3200 A - 4 poles.
  • 230/400 VAC +/- 20%, 50/60 Hz,
  • Self-powered from incoming sources.
  • Normal/Emergency logic control sequence.
  • Voltage and frequency checking of networks I and II.
  • Control of phase rotation.
  • 1 configurable output relay for generator start/stop command.
  • Position I, 0, II control by external dry contact.

Customer Benefits

  • One contact point for all LV Distribution requirements
  • Fully certified products
  • Switchboards fully assembled with MCCBs fitted and tested.
  • Distribution Boards assembled with MCBs/RCBOs fitted and fully tested
  • Quick easy site installation due to full pre assembly.
  • Each switchboard fully self-contained with only 4 no wall mounting points to consider.

Case Studies

St Aloysuis - Low Voltage Automatic Transfer Switches

Network Rail - Falkirk High Power distribution Pillars

Glasgow Underground - Cessnock Power Distribution Panels

Greenfaulds - Low Voltage Switchgear

Heartlands Oil States - Low Voltage Socket Assemblies

Simple Power - Low Voltage Switchboards and G59/NVD Grid Protection

Burns Mall - Main Switchboard Replacement

Healthcare Centres (JBE) - Manufacture of main switchboards for 5 no Healthcare facilities

Ulster Hospital - (Schneider Building Management Division)