MRM4 Motor protection
The MRM4 is a protection relay which uses the latest Dual-Core-Processor Technology to provide precise and reliable protective functions and is very easy to operate.
The MRM4 provides all necessary functions to protect low and medium voltage motors at all power levels. The protection functions are based on current measurement.
They supervise the motor start sequence (motor start), they detect a stall or locked rotor condition and they monitor the thermal condition of the motor.
Overcurrent and earth overcurrent protection as well as unbalanced load protection are included in the protection package. The status and operation of the motor will also be monitored by means of the statistic and trend recorder. All important events and measuring values will be logged by means of the start, event, failure and disturbance recorder.
The protection functions of the MRM4 have been adapted to comply with the requirements of the VDE-AR-N-4110:2018.
MRM4-2 highPROTEC Series
MRM4 Motor protection
Measurement:
Standard Ground Current
Housing type:
Housing suitable for door mounting
Please contact us if you need more information.
Features
Wide range power supply: 24 … 270 VDC / 48 … 230 VAC
CT measurement always with 1 A and 5 A
Plausibility verification intelligence
Optimized functional overview by hiding unused functions, parameter and assignments
On-board testing without removing the wiring
Applications
Start Cycle Supervision
Overload
Jam / Locked Rotor
Underload
Unbalanced Load
Number of Starts, Counters,…
Keeping motor load under the Thermal Damage Curve
Downloads
Specification |
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| DOK-FLY-MRM4-2D.pdf | Open | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DOK-FLY-MRM4-2E.pdf | Open | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Manuals |
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| Name | Open | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| MRM4-3.7-DE-MAN_C.pdf | Open | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| MRM4-3.7-EN-MAN_C.pdf | Open | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![[MCA4-2A0AAA] MCA4-2 highPROTEC Series (DI:8 DO:7, Standard Ground Current, Housing suitable for door mounting, Without protocol, Standard)](/web/image/product.product/118/image_128/%5BMCA4-2A0AAA%5D%20MCA4-2%20highPROTEC%20Series%20%28DI:8%20DO:7%2C%20Standard%20Ground%20Current%2C%20Housing%20suitable%20for%20door%20mounting%2C%20Without%20protocol%2C%20Standard%29?unique=c5fae84)
![[MRA4-2A0AAA] MRA4-2 highPROTEC Series (DI:8 DO:7, Standard Ground Current, Housing suitable for door mounting, Without protocol, Standard)](/web/image/product.product/181/image_128/%5BMRA4-2A0AAA%5D%20MRA4-2%20highPROTEC%20Series%20%28DI:8%20DO:7%2C%20Standard%20Ground%20Current%2C%20Housing%20suitable%20for%20door%20mounting%2C%20Without%20protocol%2C%20Standard%29?unique=d3d5211)
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![[MRMV4-2A0AAA] MRMV4-2 highPROTEC Series (DI:8 DO:7 AO:4, Without protocol)](/web/image/product.product/102/image_128/%5BMRMV4-2A0AAA%5D%20MRMV4-2%20highPROTEC%20Series%20%28DI:8%20DO:7%20AO:4%2C%20Without%20protocol%29?unique=c5fae84)
![[MRU4-2A0AAA] MRU4-2 highPROTEC Series (Housing suitable for door mounting, Without protocol, Standard)](/web/image/product.product/59/image_128/%5BMRU4-2A0AAA%5D%20MRU4-2%20highPROTEC%20Series%20%28Housing%20suitable%20for%20door%20mounting%2C%20Without%20protocol%2C%20Standard%29?unique=c5fae84)