Pin-type contact with spring return, EX-version

The pin-type contact SF1–EX is designed as a safety switch with positive contact and fulfills the demands for the use in explosion-endangered areas. It complies with the requirements of the norm series EN81-20 /EN81-50. The actuation is done by a pin with threaded stud. By the indirect actuation and especially large backlash (distance after contact opening) is allowed. The switch is used for the measuring of predetermined positions at moving components (e.g. rope monitoring)


  • special version for the use in explosion-endangered areas
  • 2 m connection cable
  • actuator made of brass with threaded pin M6
  • robust metal housing
  • transparent cover for function control
  • enclosure made of metal resp. shock-resistant plastics, self-extinguishing
  • with spring return
  • positively driven normally closed contact and normally open contact
  • large backlash from contact opening to the stop at actuation

Order information codes

Technical data

norms EN 81-20, EN 81-50, EN 60947-5-1, EN 60079-0, EN 60079-1, EN 60079-31
EN ISO 13849-1, EN ISO 14119
switching capacity Ui = 250 V Ith = 6 A Uimp = 4 kV
AC-15: Ie = 6 A Ue = 250 V DC-13: Ie = 0.25 A Ue = 230 V
short-circuit capacity T 6 A F 10 A
contact material silver-nickel (minimum load 24 V / 10 mA)
actuation force 19 N
connection 2 m connection cable H05VV-F, 4 x 0.75 mm²
level of protection IP65
ambient air temperature -20 °C up to +65 °C
weight 660 g