ABB 1SCA112709R1001 OTM2000E3CM230C 3P 55 kA Icw Motorized Changeover Switch

Scaled for 2000 A at 3 poles, the ABB 1SCA112709R1001 OTM2000E3CM230C motorized changeover switch transfers a load between two sources on command from a 220-240 V AC motor operator. Its short-time withstand reaches 55 kA for 1 s with a 1000 V insulation rating, matching large mains-generator switchgear. A direct-mount handle provides manual backup, and the unit is base mounted.

Technical Specifications

Selection Notes

The 1SCA112709R1001 steps up from the 1600 A frame to a 55 kA, 1-second short-time withstand, the rating to check against available fault current when this switch sits closer to a transformer or large generator than a downstream tie point. Its 3-pole configuration switches line conductors only, which fits installations that bond neutral on both sides rather than switching it. Where a neutral conductor must be isolated between sources at this current level, the 4-pole 2000 A unit in the same frame is the match; this 3-pole version is for line-only transfer.