ABB 1SVR508020R1100 Industrial Safety Relay Module

ABB 1SVR508020R1100 is the CT-MFC.21 multifunction time relay (CT-C family) with two SPDT outputs for independent control of two circuits. It provides timing from 0.05 seconds to 100 hours and accepts a control-supply voltage range of 12 to 240 V, AC or DC, enabling flexible installation in mixed-voltage panels. The device operates from -20 to 60 °C and supports multiple timing modes, including ON-delay, OFF-delay with auxiliary voltage, impulse-ON, impulse-OFF, and flashing options, across a broad set of time ranges. The 1SVR508020R1100 designation identifies the unit within ABB’s CT-MFC.21 lineup, designed for automation tasks that require coordinated dual-channel timing and switching within a single module. It is part of ABB’s economy timer range, offering standard timing functionality in a plug-compatible package for ABB systems.