ABB 1SCA151254R1001 OTM63F4C20D400C 4P 2.5 kA Icw Automatic Transfer Switch

With 4 poles and a 63 A rating, the ABB 1SCA151254R1001 OTM63F4C20D400C is a self-supplied automatic transfer switch for 380-415 V AC mains-generator installations. Its type 20D control unit uses fixed operating parameters set at the factory, keeping commissioning straightforward where field adjustment isn't required. It withstands 2.5 kA for 1 s and mounts on a DIN rail or base plate.

Technical Specifications

Selection Notes

The fourth pole puts the 1SCA151254R1001 in the neutral-switching bracket of the 63 A Compact ATS range, the configuration to specify where the installation isolates neutral between the two sources. Its 20D controller fixes switching thresholds and delay at the factory, matching standard mains-generator timing without a field-configuration step. Where those settings need to be field-adjustable instead, the 21D version in the same 63 A, 4-pole frame is the direct equivalent; this unit is for sites where factory defaults already fit.