Automatic Transfer Switches

Automatic Transfer Switches (ATS) are essential wherever substantial power must be maintained, whether it is to ensure people’s safety in work or public space, or to maintain essential supplies to a vital process. The changeover device automatically operates the transition from the primary to the secondary power supply in the event of the loss of the primary supply to the building. The second source of power can either be from a generator or from an alternative/stand-by source.

Craig & Derricott offers a full range of Automatic Transfer Switches suitable for all installations including life safety equipment. As a market-leading specialist in Auto Transfer Equipment, Craig & Derricott are here to help you. C&D have designed their ATS units to be operational in a variety of installations such as hospitals, stately homes, water distribution facilities, airports, data centres, shopping centres, offices, apartments and railway.

Our range covers current ratings from 32A to 800A and includes models compliant with life safety standards BS8519:2020.

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Mercia Standard Motorised Type ATS

Our NEW Mercia range of motorised automatic transfer switches are rated from 32A to 630A. These can be supplied in SPN (230V) and TPN (400V) AC 50/60Hz variants. Each unit is supplied in an IP65 sheet steel enclosure.
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Mercia Dual Line Bypass Form 3 Type ATS

Our NEW Mercia range of motorised automatic transfer switches are rated from 32A to 630A. These can be supplied in SPN (230V) and TPN (400V) AC 50/60Hz variants. Each unit is supplied in an IP65 sheet steel enclosure.
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Commissioning

Craig & Derricott offer the service of commissioning on all of their Automatic Transfer Switches (ATS). We will provide a level of testing that will allow you to feel confident that each C&D ATS unit is working and capable of maintaining a fully operational state during its working life.
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Mercia ATS Panel Switches

Our NEW Mercia range of loose four-pole motorised automatic transfer switches (ATS) are rated at 230V or 400V AC. Units are rated from 32A to 630A with a rated frequency of 50/60Hz.
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Mercia Standard Motorised Type Form 3 ATS

Our NEW Mercia range of form 3 motorised automatic transfer switches are rated from 32A to 630A. These can be supplied in SPN (230V) and TPN (400V) AC 50/60Hz variants. Each unit is supplied in a sheet steel enclosure.
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Mercia Single Line Bypass Form 3 Type ATS

Our NEW Mercia range of life safety form 3 motorised automatic transfer switches with no-break single line bypass, are rated from 32A to 630A. These can be supplied in SPN (230V) and TPN (400V) AC 50/60Hz variants. Each unit is supplied in a sheet steel enclosure.
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Form 4 Type 2 ATS – Motorised Class PC

Product Features:
  • Amperage: 32A, 45A, 63A, 100A, 125A, 160A, 200A, 250A, 400A, 630A
  • Material: Sheet Steel
  • Colour: Light Grey
  • Type: Motorised
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Critical Life Safety ATS – Solenoid Class PC

Product Features:
  • Amperage: 32A, 45A, 63A
  • Material: Sheet Steel
  • Colour: Light Grey
  • Type: Solenoid
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TFL (LU) Form 4 Type 2 ATS – Solenoid Class PC

Product Features:
  • Amperage: 32A, 45A, 63A, 100A, 160A, 250A
  • Material: Sheet Steel
  • Colour: Light Grey
  • Type: Solenoid
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Mimic Panels

A range of Mimic Panels remote status indication panels are available to support the ATS units. These units are normally installed local to the building's point of entry, allowing for an instant visual status of the ATS.
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