Motor Protection Circuit Breakers (MPCB)

319 parts

Motor protection circuit breakers (MPCB) from ABB, Siemens and Schneider Electric combine short-circuit and overload protection for motor feeders. The range covers 0.16 A to 500 A in 3-pole versions, from small manual starters to large thermal-magnetic breakers. Stoklink ships worldwide from Turkey and quotes project volumes on request.

Related families
Motor Starters & Motor ManagementSoft StartersVariable Frequency Drives (VFD)Servo Drives & Motion Control

319 parts

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Guide

Motor Protection Circuit Breakers (MPCB) buying guide

What's in this range

  • Siemens SIRIUS 3RV2 and 3RV1 breakers, plus 3RN2 versions for motor protection with thermistor evaluation.
  • Schneider Electric TeSys Deca GV2 and GV3 manual starters, TeSys GV4 thermal-magnetic breakers and Easy TeSys Power.
  • ABB MS116, MS132 and MS165 manual motor starters and MO132 magnetic-only breakers.
  • Accessories such as auxiliary contacts, busbar adapters and trip indicators for the 3RV1935 and GV2 families.

How to choose

  • Setting range. The motor full-load current should sit inside the adjustable thermal band.
  • Breaking capacity at the supply voltage, in kA, against the prospective short-circuit current.
  • Thermal-magnetic or magnetic-only. Magnetic-only breakers need a separate overload relay.
  • Coordination with the contactor, type 1 or type 2 under IEC 60947-4-1.
  • Frame size and mounting: DIN rail or busbar system.
FAQ

Motor Protection Circuit Breakers (MPCB) questions

What is the difference between an MPCB and an MCCB?

An MPCB is built around motor starting currents, with an adjustable thermal band and a magnetic trip set for inrush. An MCCB is a general feeder breaker with a wider rating scale.

Does an MPCB replace the overload relay?

Yes, when it has a thermal release. Magnetic-only types such as the ABB MO132 do not, so they need an overload relay downstream.

Do you export MPCBs outside Turkey?

Stoklink ships worldwide from Turkey on EXW terms. Lead time depends on distributor stock, and project quantities are quoted on request.

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