ABB 1SCA112713R1001 OTM2500E4CM230C 4P 55 kA Icw Motorized Changeover Switch

The ABB 1SCA112713R1001 OTM2500E4CM230C is the 4-pole version of ABB's 2500 A motorized changeover switch, adding a switched neutral for 4-wire mains-generator transfer under a 220-240 V AC motor operator. Short-time withstand is 55 kA for 1 s at a 1000 V insulation rating, matching the 3-pole frame. It includes a direct-mount manual handle and base mounting.

Technical Specifications

Selection Notes

Choosing between this unit and the 3-pole 2500 A switch comes down entirely to neutral handling: both carry identical 2500 A thermal and 55 kA short-time ratings, and this version simply switches the neutral conductor simultaneously with the three line poles. That is the configuration to specify where earthing practice requires neutral isolated between sources rather than solidly bonded on both sides. At 771 mm wide and 95 kg, panel space and lifting arrangements need checking against the 3-pole unit's smaller 645 mm frame before substitution.