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GAST-G-ST PC Isolator Auomatic Transfer Switch

This series of products belong to PC level isolated double power supply transfer switch, which is mainly used in the two neutral point grounding power supply system with AC 50Hz/60Hz, rated voltage of 400V and below, and rated working current of 1250A, to switch between power supplies due to the abnormality of one power supply, so as to ensure the reliability and safety of its power supply.

SKU GAST-G-ST Category


The automatic transfer switch has the positions of “common closing”, “standby closing” and “two-way disconnection”.

It is widely used for the automatic conversion of common power supply and standby power supply of power supply systems or automatic conversion and safety isolation of two-load equipment.

The product complies with GB/T14048.11 Low voltage Switchgear and Control Equipment – Part 6-1: Multifunctional Electrical Transfer Switchgear.

Frame current (A) 100 160 250 400 630 1000 1250
Rated insulation voltage 690v
Rated impulse withstand voltage 8KV
Rated working current (A) 16A,20A,25A,30A,32A,40A,50A,60A,63A,70A,75A,80A,100A 125A,140A,160A 200A,225A,250A 315A,350A,400A 500A,630A 800A,1000A 1250A
Rated short-time making capacity 8KA 17KA 26KA 50KA
Rated limiting short-circuit current 120KA
Control supply voltage AC230V

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