Image is Representational - See Manufacturer Specs | Safety relay for SIL 3 high and low-demand applications - also approved according to EN 50156 - Germanischer Lloyd - and EN ISO 13849 - emergency stop and safety door monitoring - single-channel - 2 enabling current paths - 1 alarm contact - plug-in screw terminal blocks - width: 22.5 mm The 2981020 is a 3-pole Safety Relay for SIL 3 high and low demand applications. 2 enabling current paths 1 signalling current path contact. AgSnO2 gold-flashed contact. Polyamide PA non-reinforced housing. M3 Screw connection. Electromechanically forcibly guided dust-proof relay. On horizontal and vertical DIN rail mounting. Air and creepage distances between the power circuits.