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FG Wilson automatic transfer panels

FG Wilson ATI 250
250 A automatic transfer switch

Wall mounted standby-power changeover, with specification support from FW Power.

The entry rating in the ATI range. At 39 kg, it is lighter than the 44 kg ATI 400 despite sharing the same listed cabinet dimensions. Confirm the supporting wall and fixing arrangement.

Rated current
250 A
Mounting
Wall mounted
H × W × D
900 × 600 × 323 mm
Listed weight
39 kg

Price, lead time, available options and the final build specification are confirmed with your quotation.

FG Wilson ATI 400 automatic transfer switch panel; representative ATI 250 family image
Representative family photograph: ATI 400 shown, not ATI 250. Enclosure details can vary by model and configuration.
Product specification

ATI 250 technical data

The listed envelope and weight help you compare panels and plan space. Allow additional room for cable bends, termination access, doors and maintenance.

Final drawings and the ordered configuration take precedence when planning the installation.

Read our transfer switch specification guide
FG Wilson ATI 250 specification
ManufacturerFG Wilson
ModelATI 250
Rated current250 A
Panel typeAutomatic transfer switch / load transfer panel
MountingWall mounted
Height900 mm
Width600 mm
Depth323 mm
Weight39 kg
Cable entryBottom; top entry option to confirm
IP54 enclosureOptional; specify at enquiry
Voltage, frequency and polesConfirm for the selected configuration
Fault duty and protectionConfirm against the installation design

Published range data, subject to final configuration. No generator kVA equivalence is assumed.

Control and integration

Automatic changeover.
A considered specification.

The ATI 250 belongs to FG Wilson’s ATI load-transfer range. The controls monitor supply conditions, request a compatible generator start and manage transfer and return to mains according to the commissioned sequence.

Range features

  • Two-wire generator start signal
  • Removable bottom cable gland plate
  • Automatic, manual and test modes
  • LCD, password-protected keypad and programmable timers
  • Integrated manual handle and padlocking facility

Confirm any isolation or maintenance procedure from the instructions for the supplied equipment.

Options and configuration

  • IP54 enclosure option
  • Top cable entry, subject to model
  • RS485 communications module
  • Power metering and auxiliary contacts
  • Solid neutral and supply-available volt-free contacts
  • Surge-protection option

Options depend on the selected model and current build specification. Confirm every required function in your quotation.

Before you order

Match the system,
not just the amps.

Confirm the supply voltage, phase and frequency, neutral and earthing arrangement, load duty, fault level, protection, cable capacity and generator-start interface.

A standard open-transition ATS does not provide uninterrupted power or generator paralleling. Tell us if the load requires UPS support or a different transfer arrangement.

TEAM FW Power

Specify your ATI 250
with our team.

Discuss panel supply, replacement of existing equipment or a wider generator and changeover proposal. We can review alternatives if this model or its configuration does not meet your requirements.

Share your site location, required date, quantity, supply details, generator controller and single-line diagram if available. State any environmental, access or monitoring requirements.

Let’s put your power in place.

Tell us what you need to power. We’ll help you find the right solution.

Talk to our team