Type MPR20

91,3 mm


The MPR20 is a monostable electro-mechanical power relay. Its integral electronic control circuitry helps reduce power consumption in the holding power by the factor 10 compared to standard power relays. It can both switch and carry 300 A. In the event of a power disruption, the relay will at once go into its original state due to its monostable design. This provides more safety and reliability. Reduction of holding power and of the pull-in power allows direct connection to the controlgear and provides additional cost reduction and environmental advantages despite a monostable design. By using standard termination technologies and mounting dimensions, the MPR20 can easily and quickly replace conventional relays.

  • Reduced fuel consumption and CO2 emission due to an 90 % lower holding power
  • Flexible installation for demanding applications due to a robust, waterproof and dust-proof design
  • Reduced installation time through direct connection to the controlgear

NEW! Now also available with robust plug-in connector - compatible with the HDSCS connector series
NEW! Extension to 48 V in the load circuit

Saves time and costs

  • through quick and fault-free mounting
  • thanks to isolation of the control contacts from environmental influences
  • through high resistance against vibration and mechanical stress

Technical Data

Voltage rating DC 12 V
DC 24 V
DC 48 V
Operating voltage DC 16...32 V
DC 9...16 V
Continuous current 100 A
200 A
300 A
Number of poles 1-pole
Temperature range -40 °C …. + 85 °C
Terminal design Load terminals M8 or M10
Control terminals M4 resp. HDSCS
Mounting method M4 connectors side and foot
foot flange
holes with compression limiter
side flange
Design Cylindrical enclosure
Feature Mechanical power relay for harsh application conditions.

Particularly power-saving thanks to the electronic control of the monostable drive, which reduces power consumption during operation by a factor of 10.
Contact system type mechanical
Certificates KBA E1 (ECE-R10)


  • Automated guided vehicles (AGV)
  • Automobiles
  • Commercial Vehicles
  • Forklifts
  • Rail vehicles
  • Watercraft & Vehicles