630A Automatic Transfer Switch ATS – Three Phase

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Product Details

Make the most of your generator by adding a 630A automatic transfer switch (ATS) 3-Phase for added security and peace of mind. This mains to generator automatic changeover switch seamlessly detects a power outage and start your standby generator. As soon as mains power is restored the transfer switch turns off the generator and connects back to the mains power supply.

630A Automatic Transfer Switch ATS – Three Phase

  • Voltage:Industrial 3 Phase + N 415v
  • Frequency:
  • Fuel:
  • Max Power:
  • Rated Power:
  • Starting System:
  • Oil Capacity(L):

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Key Features

This transfer switch should be permanently installed close to the mains incoming supply to your building. In normal operation the load is supplying by the mains in the usual way but when the mains power is lost the ATS switch senses this loss and sends a signal to start your generator.

When the generator has started and is up to speed and frequency (normally around 8 to 10 seconds) this automatic changeover switch will automatically transfer the load to the standby generator set.

The automatic transfer switch will continually monitor the mains power and when this returns it will transfer the load back to the mains and initiate a cooling cycle and stop the generator. The transfer switch will then reset in readiness for the next power interruption.

  • 4 Pole rotary motorised contactors (ATyS r 4P)
  • Mains incoming input
  • Generator incoming input
  • Load output terminals
  • Mild steel enclosure
  • Bottom gland plate
  • Voltage monitoring relay for Mains supply
  • Over & under voltage protection of Mains supply
  • Panel status via LED indicators. Mains On Load, Plant On Load
  • Two wire start interface for generator control (starting &stopping)
  • Fuses for control & monitoring circuit protection
  • Generator warm up timer
  • Mains restoration timer
  • Full set of electrical schematics

What is a ATyS r Contactor and how does it work?

The ATyS r series comprises motorised switching units designed for remote operation, available in 3 or 4-pole configurations. These devices incorporate a distinct circuit-disconnection verification system, ensuring reliable isolation during transitions. They facilitate live switching between dual three-phase power sources without requiring load disconnection, managed through isolated control contacts. Operation can be initiated via external automation systems using pulsed signal commands or through direct manual input from a local interface.

Engineered for low-voltage distribution networks, these transfer switches are ideal for applications where momentary power disruption during source changes is permissible. Their design prioritises safe load management during grid or generator transfers, supporting both automated and user-initiated switching protocols. The system’s architecture allows integration with supervisory control systems while maintaining compliance with safety standards for energised circuit handling.

Key applications include critical infrastructure and industrial settings where redundant power supply coordination is essential, yet brief interruptions are non-critical. The inclusion of status feedback mechanisms ensures operational transparency, confirming successful source transitions and system readiness.

The system is intended to be installed by a professional electrician with experience in standby power. Please contact Hampshire Generators if you need any assistance. Hampshire Generators can also maintain your generator with a regular cost-effective service plan or one-off visit. Simply call 01329 722390 or inquire via contact us page for more information.

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