ABB PS1-3-1-65 Industrial Safety Relay Module

ABB PS1-3-1-65 is a three-phase busbar accessory rated for 65 A at 690 V that enables three MS-series motor starters (MS116, MS132 and MO132) to be mounted and interconnected as a single compact assembly, including one auxiliary contact on the side for control signaling. Designed for 50/60 Hz systems, this PS1-3-1-65 unit provides a streamlined wiring solution in motor-control panels and helps reduce cabling complexity while maintaining robust electrical performance. The assembly is associated with ABB part 1SAM201906R1113 and is intended for use with ABB’s PS1 busbar configurations to create triple-start arrangements, commonly applied in machine tools, conveyors, pumps, and fans where three motors require coordinated switching from a common control interface. Specifications typically cited for the PS1-3-1-65 include a 65 A rated current, 690 V rated insulation and operating voltage, and a 6 kV rated impulse withstand, aligning with ABB’s low-voltage safety and performance standards. This module integrates with ABB’s MS-series starters to deliver a neat, reliable, space-efficient solution for multi-motor control in industrial panels.