ABB 1SCA151423R1001 OTM63F3C20D400C 3P 2.5 kA Icw Automatic Transfer Switch

Rated 63 A across 3 poles, the ABB 1SCA151423R1001 OTM63F3C20D400C is a self-supplied automatic transfer switch for 380-415 V AC mains-generator installations. Its type 20D control unit carries fixed operating parameters set at the factory, simplifying commissioning where the switching logic doesn't need field adjustment. It withstands 2.5 kA for 1 s and mounts on a DIN rail or base plate.

Technical Specifications

Selection Notes

At 63 A, 3-pole, the 1SCA151423R1001 covers a 3-phase circuit without neutral switching, the right fit where neutral is bonded rather than isolated between the two sources. Its 20D controller fixes switching thresholds and delay at the factory, which is enough where the project runs standard mains-generator timing. Where field-adjustable thresholds are needed instead, the 21D version in the same 63 A, 3-pole frame is the direct equivalent; where neutral must be switched as well, the 4-pole 20D unit is the option.