Abb ps-2fsn43 Backfeed Protection Ps Arm a B

Product Description

The ABB ps-2fsn43 is a backfeed protection module designed for use with PS Arm A and PS Arm B configurations. Backfeed protection prevents unintended reverse current flow from downstream equipment back into the power supply or bus arm assembly, protecting upstream components and maintaining system integrity. This type of device is typically installed by licensed electricians working on commercial or industrial power distribution systems where panel or bus arm assemblies require isolation and protection against backfed voltage conditions.

The ps-2fsn43 is suited for installation within PS Arm A and PS Arm B assemblies in panel or distribution board configurations. It serves as a protective component in systems where backfeed risk is present, such as installations with multiple power sources, generator tie-ins, or paralleled supply circuits. Electricians and electrical contractors working on commercial distribution equipment are the primary installers of this device.

Key Features

• Provides backfeed protection for PS Arm A and PS Arm B assemblies
• Prevents reverse current from reaching upstream power supply components
• Designed for integration into commercial and industrial panel assemblies
• ABB manufacturer quality for use in distribution board applications

Compatibility

Designed as a backfeed protection module for PS Arm A and PS Arm B configurations as indicated by the product designation.

Installation Notes

Installation should be performed by a qualified licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize and lockout/tagout the affected panel or distribution assembly before beginning any installation or service work. Verify that all sources of backfeed, including alternate supply circuits or on-site generation, are isolated prior to handling. Follow the manufacturer documentation for mounting orientation and connection sequence specific to the PS Arm assembly.