General [t-head1-first]
For the various applications measurement amd monitoring relays are necessary. With the new EMR4 range Moeller covers a large number of requirements :
- general use, current monitor EMR4-I
- space saving monitoring of the rotary field, phase sequence relay EMR4-F
- protection against destruction or damage of single system parts, phase monitoring relay EMR4-W
- safe recognition of phase failure, phase imbalance monitoring relay EMR4-A
- increased safety by motor current principle , level relay EMR4-N
- increase of the operational safety, insulation monitoring relay EMR4-R

