MPCB for Conveyor Motors
How to size the thermal dial, choose the right trip class for belt inertia, and protect conveyor motors with an MPCB.
MPCB for Fan and HVAC Motors
How to set the trip class, dial, and magnetic-only configuration for MPCBs protecting fan and HVAC motors, including VFD-driven fans and phase-loss protectio...
MPCB for Pump Motors: Selection and Setting
How to size the thermal dial, select trip class, and protect against phase loss when specifying an MPCB for a pump motor.
Best MPCB and Manual Motor Starter Brands Ranked
A brand-by-brand ranking of Schneider TeSys, ABB MS, and Siemens SIRIUS 3RV2 MPCBs by coordination-table depth, current-range breadth, and phase-loss protect...
Siemens SIRIUS 3RV2 MPCB: Full Range Review
A full range review of the Siemens SIRIUS 3RV2 motor protection circuit breaker: frame sizes, thermal-magnetic vs magnetic-only variants, trip class, and 3RT...
ABB MS116, MS132 and MS165 Manual Motor Starter Review
A comparison of ABB's MS116, MS132 and MS165 manual motor starters covering current range, terminal options, magnetic-only variants, and how to choose betwee...
Schneider TeSys GV2, GV3 and GV4: Full MPCB Range Review
A frame-by-frame review of Schneider TeSys GV2, GV3 and GV4 motor protection circuit breakers covering current range, trip technology, terminals and LC1 cont...
Schneider GV2/GV3 vs ABB MS132 vs Siemens 3RV2: MPCB Comparison
A side-by-side technical comparison of Schneider TeSys GV2/GV3, ABB MS132/MS165, and Siemens SIRIUS 3RV2 motor protection circuit breakers on frame size, ter...
MPCB for High-Inertia and Frequent-Start Loads
How to size MPCB trip class (10, 20, 30) and thermal memory for high-inertia, frequent-start motor loads.
MPCB Derating for Temperature and Altitude
How to correct an MPCB's current rating and setting for ambient temperature above the compensated band and installation altitude above roughly 2000 m.
