Hermann ZANDER GmbH & Co. KG
Am Gut Wolf 15
52070 Aachen
Tel: +49 (0)241 910501-0
Fax: +49 (0)241 910501-38

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SR3D is a universally applicable safety relay with three safety relay outputs, specially designed for the use in furnaces in continuous operation according to EN 50156-1. Additionally, it is certified by the Germanischer Lloyd under 32915-06HH and thus, approved for use at sea.

For example, it is being successfully used in waste incineration plants on ships.


Product Page: SR3D - Safety Relay

Eigenschaft Wert
Safety function Emergency stop monitoring, safety guard monitoring,
light grids monitoring, safe coupling relay
Certified according to EN 60204-1; DIN EN ISO 13849-1; EN 62061; EN 50156-1;
EN 746-2; IEC 61508 Teil 1-2 und 4-7; IEC 61511-1
Approvals CE, TUV, GL
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
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 472272 (24 V) / 472271 (115 V) / 472270 (230 V)
Order No. plug-in screw terminals 474272 (24 V) / 474271 (115 V) / 474270 (230 V)
Order No. push-in twin spring connector 475272 (24 V) / 475271 (115 V) / 475270 (230 V)
Order No. EKLS4; set of plug-in screw terminals 472592
Order No. EKLT4; set of push-in twin spring connectors 472595
Order No. Spacer for a defined minimum distance between two safety relays (see derating) 472596

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