ABB 3BSE003390R1 Safety Relay Module

ABB 3BSE003390R1 is a power supply unit in ABB’s 3BSE safety family, documented as the SA167 Power Supply Unit with input described as AC 115 V or DC. The part number 3BSE003390R1 (with the -N variant 3BSE003390R1-N) appears in ABB distributor listings and product catalogs. This module provides the dedicated electrical supply used within ABB safety-related assemblies in industrial automation, serving as the power source for safety components in legacy Advant/Master Process Control environments. In practice, it supports typical ABB safety installations that require a reliable, standalone supply for safety-related devices, and its identifiers—3BSE003390R1, the SA167 designation, and the -N variant—are confirmed across supplier records.