Solutions for your safety

Type: MFR20


The software of the MFR20 multifunctional relay allows many customer-specific adjustments when replacing a standard automotive relay, e.g. monitoring of frequency and voltage, pulse outputs or switching loads on or off. 

The MFR20 multifunctional relay features a mechanical contact system for high continuous current.

  • Fast and direct exchange of standard automotive relays by intelligent relays with additional functions.
  • Reduction of complexity through a customer-specific software that can specially be adjusted to customer applications.

The MFR20 multifunctional relays are available for DC 12 V and DC 24 V applications and are suitable for standard automotive relay sockets to ISO 7588 (ISO MAXI).

Software and specification of requirements are set up in direct co-operation with our customers.

Technical Data

Continuous current 10 A
30 A
Physical isolation of load circuit 2 (1 x NO, 1 x NC)
Temperature range -40 °C … +85 °C
Terminal design ISO 7588 MINI Socket
Terminal design
Mounting method standard automotive relay socket
Design Cubic enclosure 30 mm x 30 mm x 40 mm
Feature - multifunctional relay with mechanical contact system and microcontroller
- always sold together with a customer-specific software
Contact system type mechanical



  • Buses
  • Construction machinery
  • Passenger cars
  • agricultural and forestry machinery
  • trucks

Scopes of applications

  • Monitoring frequencies and voltages as well as the corresponding switching of loads such as heaters, fans etc. 
  • Co-ordinated, sequential switch-on of loads to avoid load peaks (e.g. with fans).
  • In addition, these relays can include functions which otherwise would have to be implemented by controlgear.


Data sheet 163.9 KB