ABB OTPS125FD Overload Protection Switch 125A

ABB OTPS125FD Overload Protection Switch is a 125 A fourth-pole accessory for ABB OT switch-disconnectors, providing complete four-pole isolation and overload protection for three-phase power circuits. The FD variant is specifically the four-pole option designed for DIN rail or base mounting and carries part number 1SCA105096R1001, with an approximate weight of 0.30 kg per unit. It is compatible with ABB OT series switches in the 100–125 A range (OT100–OT125), enabling four-pole disconnection in industrial power-distribution panels. This accessory is intended to augment motor and equipment protection by interrupting all poles to ensure safe and simultaneous shutdown, conforming to ABB's switch-disconnectors product family.