Allen-Bradley 700-PSRTA1 Solid-State Timing Relay

Allen-Bradley 700-PSRTA1 is a Bulletin 700 solid-state timing unit designed to deliver fixed-time delays in industrial control circuits, enabling precise sequencing in automated equipment without moving parts. This module carries a 600 V AC maximum rating and a 300 V DC maximum rating for the controlled circuit, and it lists a 120 V line supply, making it compatible with common North American control panels that power timing logic from 120 V line voltage. It is part of the older 700 family of timing relays and was discontinued by Rockwell Automation as of March 31, 2018, with replacement recommendations issued in their Engineering Replacement program. Typical uses include starting and stopping sequences, delay interlocks, and timed interlock functions in conveyors, presses, packaging lines, and other industrial equipment where a solid-state timer provides repeatable, maintenance-free operation compared with mechanical relays.