ABB PS2-4-0-125 Power Supply

ABB PS2-4-0-125 is a 3-phase busbar assembly in ABB’s PS2 family, designed to mount four MS165 motor protection switches in a single, compact phase distribution rail. The unit is rated for 125 A (Ie = 125 A) per circuit and operates in systems up to 690 V AC, making it suitable for panel distribution in industrial control applications. This four-position busbar carries the phase connections for each MS165 module and is referenced by order code 1SAM401920R1004, aligning with ABB’s phase busbar solutions for MS165 arrangements. Used in OEM panel builds and equipment racks, it simplifies wiring by providing a shared, rigid conductor path for the three phases across the four protective devices, reducing wiring complexity and improving neatness and serviceability. The PS2-4-0-125 is commonly cataloged alongside other PS2 configurations for motor protection and control gear and is compatible with ABB MS165 family components for scalable protection in centralized installations.