Hengstler ROS Safety Relays

Hengstler ROS Safety Relays is a product from Hengstler. This product comes from safety relay categories. Due to the constant high number of electrical switching cycles, the new H-480 can be used for a broad range of safety applications.

For decades, HENGSTLER has been intensively involved in matters relating to forcibly guided, or captive, contacts and, as a result, with safety relays. Our large, international customer base benefits from this experienced gathered over many years when it comes to developing and manufacturing relays with forcibly guided contacts.

Hengstler ROS Safety Relays Features

  • 4 contacts
  • 8 A switching & permanent current
  • Drive is monostable as DC
  • Ambient temperature -15 to +70 °C
  • With forcibly guided contacts to EN 50205, application type A
  • cULus and TÜV approval

Another Article:


Function / Application Safety relay
Product line KACO
Relay family ROS
Contact set forcibly guided
According EN 50205 Application type A
Ambient temperature [°C] -15 … +70 °C
Soldering heat resistance [°C] 260 °C
Max. soldering time [s] 5 s
Pins pre-soldered with Sn 100
Approval TÜV
Standards EN 50205
IEC 61810-1
UL 508
Meets the requirements RoHS
Number of NO contacts 2 … 3
Number of NC contacts 1 … 2
Number of CO contacts 0
Dimensions L x W x H [mm] 42,0 x 16,0 x 32,2 mm
Housing dustproof (RT II)
Shock resistance NO / NC [g] 30/30 g
Puls duration (half sinus) 11 ms
Vibration resistance NO / NC [g] 5/5 g
Frequency range [Hz] 10 – 55 Hz
Operating time NC contact, contact opens [ms] 9 ms
Operating time NO contact, contact closes [ms] 12 ms
Releasing time NO contact, contact opens [ms] 5 ms
Releasing time NC contact, contact closes [ms] 8 ms
Mechanical service life (without load) 10,000,000 switching cycles
Connection type Solder pins for pcb
Weight [g] 35 g
Drive system DC monostable
Nominal coil voltage [V] 6 … 250 V
Coil resistance [Ohm] 25 … 66,000 Ohm
Contact material AgNi + 0,2 … 10 µm Au
AgSnO + 0,2 … 2 µm Au
Max. switching current [A] 6.00 AM
Max. switching voltage [V] 230/240 V
Max. switching capacity [VA] 1840 VA
Switching capacity AC-15 at 230 V [Ie in A] 4.00 AM
Switching capacity DC-13 at 24 V [Ie in A] 1,2 A
Electrical service life (with nominal load) 100,000 cycles
Short-circuit capacity 1000 A / AC 230 V [A] 8.00 AM
Insulation Basic insulation

Download Data Sheet: Safety Relays Type ROS

Ref: hengstler.de

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