• 5 contacts
  • max. 6 A switching & permanent current
  • Drive is monostable as DC
  • Ambient temperature -25 to +75 °C
  • With forcibly guided contacts to EN 50205, application type A
  • Meets requirements for signal relays under UIC 736e
  • cULus and TÜV approval
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Function / ApplicationSafety relay
Product lineHENGSTLER
Relay family473
Contactsetforcibly guided
According EN 50205Application type A
Contact behaviourfault tolerant
Ambient temperature [°C]-25 ... +75 °C
Soldering heat resistance [°C]260 °C
Max. soldering time [s]5 s
Pins pre-soldered with Sn 100
  • TÜV
  • cULus
  • EN 50205
  • IEC 61810-1
  • UL 508
Meets the requirements
  • RoHS
  • UIC 736


Number of NO contacts2 ... 4
Number of NC contacts2
Number of CO contacts0
Dimensions L x W x H [mm]47,7 x 35,7 x 15,7 mm
Housingdustproof (RT II)
Shock resistance NO / NC [g]10/8 g
Puls duration (half sinus)11 ms
Vibration resistance NO / NC [g]10/5 g
Frequency range [Hz]10 - 200 Hz
Operating time NC contact, contact opens [ms] 16 ms
Operating time NO contact, contact closes [ms] 21 ms
Releasing time NO contact, contact opens [ms] 6 ms
Releasing time NC contact, contact closes [ms] 11 ms
Mechanical service life (without load)10,000,000 switching cycles
Connection typeSolder pins for pcb
Weight [g]50 g


Drive system DC monostable
Nominal coil voltage [V]5 ... 110 V
Coil resistance [Ohm]26 ... 12,600 Ohm
Contact material
  • AgNi + 0,2 ... 5 µm Au
  • AgSnO + 0,2 ... 2 µm Au
Max. switching current [A]6 A
Max. switching voltage [V]230/240 V
Max. switching capacity [VA]1380 VA
Switching capacity AC-15 at 230 V [Ie in A]3 A
Switching capacity DC-13 at 24 V [Ie in A]2,5 A
Electrical service life (with nominal load)100,000 cycles
Short-circuit capacity 1000 A / AC 230 V [A]6 A
InsulationReinforced insualtion
With its H-473 safety relays, HENGSTLER provides a solution for all those applications that require high component density. The max. height of 15.7 mm enables them to be used in 22.5 mm module housings, for example. The well-designed layout of the relay pins means there is plenty of space at the rear of the circuit board for SMD components. H-473 safety relays conform to EN 50205 standard, Application type A, and IEC EN 61810-1. In addition, these safety relays also meet the requirements for railway signal relays in accordance with UIC 736e.