Feature | Value |
---|---|
SR3A | |
Safety function | Monitoring of sensors with antivalent logic |
Certified according to | EN 60204-1; DIN EN ISO 13849-1; EN 62061; IEC 61508 Teil 1-2 und 4-7; IEC 61511-1 |
Approvals | CE, TUV |
Supply voltage | AC/DC 24 V / AC 115 V / AC 230 V |
Number of safe relay contacts | 3 |
Max. switching capability of safe relay contacts | 8 A / 250 VAC resistive load |
Number of auxiliary relay contacts | 1 relay |
Number of non time-delayed contacts | 3 |
Number of time-delayed contacts | - |
Starting behavior | Automatic start or manual, monitored start |
PL; Cat.; SILCL (EN ISO 13849-1; EN 62061) | PL e; Cat. 4; SILCL 3 |
Width | 22.5 mm |
Order No. fixed screw terminals | 472262 (24 V) / 472261 (115 V) / 472260 (230 V) |
Order No. plug-in screw terminals | 474262 (24 V) / 474261 (115 V) / 474260 (230 V) |
Order No. push-in twin spring connector | 475262 (24 V) / 475261 (115 V) / 475260 (230 V) |
Accessories | |
Order No. EKLS4; set of plug-in screw terminals | 472592 |
Order No. EKLT4; set of push-in twin spring connector | 472595 |
Order No. Spacer for a defined minimum distance between two safety relays (see derating) | 472596 |
SR3A - 3NO/1NC antivalent - safety module

Downloads
Operating Instructions SR3A (2.5 MiB)
TUV Certificate Safety Relays (626.0 KiB)
CCC Certificate (681.5 KiB)
CE Declaration (885.2 KiB)
EPLAN Macro SR3C 24V (133.5 KiB)
EPLAN Macro SR3C 115V (133.5 KiB)
EPLAN Macro SR3C 230V (133.5 KiB)
CE Declaration (1.3 MiB)
UKCA Declaration of Conformity Relays (382.5 KiB)
UL Certificate of Compliance for Zander Safety Relays E135050 (480.1 KiB)
SR3A is a safety switching device specially designed for sensors with antivalent logic (normally open / normally closed combination).
The SR3A can also be used as a safe coupling relay with fault monitored control.
In case of danger, the moving parts of a machine or system can be quickly and safely shut down via three safe relay contacts.