MH thermal relay 0,1…14 A for MK 2, MK 4 minicontactors 2019-08-30T13:18:12+00:00

MH  thermal relay 0,1…14 A
for MK 2, MK 4 minicontactors

The three phase thermobimetal relays are suitable for the protecting of the electrical consumers – especially electric motors – against overcurrent and overheating.

Current ranges

Characteristics of MH thermal relay

The value of the motor’s rated current should be adjusted by the knob to the arrow
The resetting mode (manual or automatic) can be chosen
TEST button is suitable for testing the functional capability.
The thermal relays have a double slide-system which operates the switch-off mechanism, in case of phase failure it releases faster.
The contacting mechanism contains two electrically independent NO and NC contacts
The compensating bimetallic unit ensures the operation ont he given wide  ambient, temperature
The device can be plugged directly to lower terminals of MK 2 and MK 4 contactors.
The thermal (overload) relays refer to requirement of standard EN 60947-4-1.


They may be used in motorstarter, reversing, star-delta and other combinations.

Relevant standard: EN 60947-4-1
The detailed technical description of the product family is in the catalogue:
For further information contact with product manager György Lieli
or engineer Lajos Holczbauer