MPR-3M Selec Motor Protection Relay

MPR-3M Selec Motor Protection Relay protects your motor against burnout. Can be used as protection against motor burnout during overload or locked rotor, and offers a wide range of specifications to meet various needs, including protection against overload and phase loss, time lag, quick connect, etc.

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  • Monitors: Phase loss, Phase unbalance, Phase sequence, Overload trip current, Under / Over current
  • Suitable for 1Ø or 3Ø motors.
  • Accuracy: 5% of set value.
  • 2 C/O (DPDT) output relay.
  • Auto / Remote test available.
  • Aux supply : 230V AC ± 15%. Or 415V AC ±15%


  • Motor protection and control for a variety of drives
  • Application-specific standard configurations resulting in a shorter relay setup and commissioning time
  • Preconfigured solutions for utility distribution and industrial applications



Measuring Parameter Overload Current, Phase Asymmetry, Phase Failure & Phase Sequence, Under Current
Electrical Connection 3Ø-3W
Display 3 LED Indication
Trip Setting Phase Unbalance: 50% of Motor Current (Fixed),
T(sec) Setting: 2 , 4, 6 , 8 ,10 Sec Trip Time Curve in Overload Trip Curve Graph,
Under Current: 50% of Motor Current,
X Imax: To Select Motor Current Rating
Time Ranges Single Phase Trip: 5sec,
Phase Unbalace: 5sec,
Phase Sequence: 5sec,
Overload Trip: As Per (IDMT Curve) ,
Under Current Trip: 5 Sec
CT Setting 10A, 40A, 80A
Accuracy Trip: ±5% of Set Value,
Time: ±5% of Setting ±100ms
Output Contact 2 C/O (DPDT )
Output Rating NC: 5A @ 240V AC , NO: 5A @ 240V AC
Supply Voltage 230V AC ±15% ,415V AC (±15%)
Size 52.5mm
Mounting Type DIN Rail Mount