ABB 1SCA129240R1001 OTM3200E3CM230C 3P Motorized Changeover Switch

At 3200 A and 3 poles, the ABB 1SCA129240R1001 OTM3200E3CM230C is among the largest motorized changeover switches in ABB's OTM line, built to transfer heavy mains-generator or parallel-feed loads between two sources under a 220-240 V AC motor operator. Rated operational voltage reaches 1000 V, and a direct-mount handle allows manual operation alongside the motor drive. It is base mounted.

Selection Notes

This is the top-current 3-pole switch in the verified OTM range at 3200 A, intended for a main mains-generator tie rather than a sub-distribution changeover. The source record for this SKU does not carry a short-time withstand (Icw) or insulation-voltage figure the way the 1600-2500 A units do, so those ratings should be confirmed from the ABB catalog before final selection where fault coordination is critical. At 95 W per pole and a 691.5 mm frame width, ventilation and busbar clearance both scale up from the smaller 1600-2500 A frames and should be checked against the switchboard design. Line-only 3-pole switching fits installations that bond neutral on both sides; the 4-pole version in the same 3200 A frame adds a switched neutral.