Safety relay 470221E1U

can optionally be expanded with 8 sensors via input expansion for N.O./N.C. combination


Safety relay 470221E1U is space saving thanks to the compact and slim 462 design.



Product characteristics:

  • SIL 2 / PL d
  • 2 sensor inputs
  • 2 potentially free relay safety outputs
  • For sensors with N.O. / N.O and N.O. / N.C combination
  • Installation and maintenance time is reduced as guard door and emergency stop monitoring are combined in one device.
  • Slim, space-saving design
  • Easy installation with screwless terminals
  • Up to 8 sensors can be connected via elobau input expansions
  • Optionally without operating time for, e.g., slowly closing guard doors (operating time = simultaneity monitoring of the two sensor contacts)


Up to 8 sensors and 8 E-stop buttons can be connected via an interconnection system. With the sensors, we recommend using our interfaces 363 098.

470221E1U Product inquiry
contact form N.O./N.C.
operating voltage 24 V DC 10%
max. current consumption 190 mA
max. switching voltage 250 V AC/30 V DC
max. switching current 3 A
max. switching power 750 VA/90 W
temperature range 0+55C
connection terminal 0,2 - 2,5 mm2
sensor inputs 1
safety outputs 2
operating time no limitation
external contactor yes
safety characteristics SIL CL: 2 / PL: d / cat: 3
PFHD 1,96e-9
ETL-approved yes
Contact United Kingdom
Download catalogue Machine Safety