SSAC TRB120A2X30 Time Delay Relay

The SSAC TRB120A2X30 Time Delay Relay is a 120 VAC delay-on-break timer from SSAC’s TRB series designed to provide a controlled release delay in automated control circuits. The unit combines an isolated 10 A relay output with analog timing circuitry and timing is initiated on contact break, making it well-suited for sequencing, interlocks, and restart delays in conveyors, pumps, fans, and other automation tasks. The model is specified for a 1 to 30 second delay window, enabling quick hold-off to longer interlocks depending on the installation; timing accuracy and repeatability are in line with TRB series characteristics, with variants spanning multiple voltage options and base styles. The TRB family is known for compact, plug-in form factors and durable electromechanical outputs, providing reliable operation in panel assemblies and industrial environments. Typical applications include start/stop sequencing of motors and pumps, safety interlocks to prevent premature restart after a fault, timer-based gating in control loops, and other scenarios where a defined down-time after de-energization is required.