Safety relay for enabling circuits — SIL 3 rated
That SIL 3 rating means it meets the highest single-device safety integrity level for machinery guarding — suitable for applications where a single fault cannot lead to loss of the safety function, such as emergency stop circuits, light curtain monitoring, and two-hand control stations. Rated 110-240 V AC/DC with an operating range of 0.85 to 1.1 times rated voltage at both 50 Hz and 60 Hz. Response time is 200 ms typical, 300 ms maximum; AC and DC dropout both cap at 130 ms maximum. That 200 ms window is fast enough for most machine-guarding circuits but not for high-speed press applications that demand sub-50 ms reaction — those need a dedicated safety controller.
Mounting and wiring — 22.5 mm DIN-rail footprint
Width is 22.5 mm, height 100 mm, depth 121.6 mm — the standard single-module footprint that snaps onto a DIN rail (screw and snap-on mounting) and fits any position. Terminals accept solid wire 1x (20-16 AWG) or 2x (20-16 AWG), and stranded wire the same. With ferrules, capacity is 1x (0.5-1.0 mm²) or 2x (0.5-1.0 mm²). The spring-cage or screw terminals (fastening method is screw and snap-on) handle the typical 0.75 mm² control wiring used in safety circuits.
Functional inputs and ratings
Includes a start input and a feedback input, so it supports monitored start (automatic or manual) and external contactor feedback for cross-monitoring of the power contacts downstream. The safety switch input is present, meaning it can directly read a guard door switch without an intermediate interface. Total current maximum through the enabling circuits is 12 A. At 24 V the relay contacts are rated 1 A, at 115 V and 230 V they are rated 1.5 A — these are the thermal current limits for the safety contacts, not motor-starting ratings. Power loss is 2.5 W maximum, negligible for panel thermal budgeting. Shock resistance is 10 g / 11 ms. EMC emitted interference meets IEC 60947-5-1, Class A (industrial environment).