ABB

Main Functions

Thermal overload protection (TOL): Calculates motor thermal image by phase‑current sampling, prevents winding overheating and insulation damageManualsLib.
Stall & long‑start protection: Detects rotor locked‑rotor and over‑long starting time, trips to avoid motor burnout during startup phaseeero.
Phase‑failure & phase‑unbalance protection: Monitors three‑phase current loss and unbalance, trips against abnormal grid‑side conditionseero.
Earth‑fault protection: Detects motor winding earth leakage faults.
Over‑voltage / under‑voltage protection: Reacts to power‑supply voltage deviation; supports auto‑restart logic after voltage dip recovery.
PTC thermistor protection: Accepts PTC sensor signal from motor winding for direct winding temperature monitoring.
Start‑limitation protection: Restricts motor start‑up times within defined time window to avoid frequent start‑up damageeero.
Short‑circuit protection: Fast trip for heavy short‑circuit failure.

ABB M102‑M Kit Motor Protection Unit

Supports multiple starter logics: direct‑on‑line, forward‑reverse, star‑delta, two‑speed motor, soft‑starter cooperating control, feeder control logiceero.
Local / remote start‑stop, reset command execution; digital input & output configurable for site interlock signals.
Manual‑automatic mode switching.

ABB M102‑M Kit Motor Protection Unit

Real‑time measurement: three‑phase current, voltage, thermal load value, fault status, running hours, start‑up counts.More products: www.plcva.com
SOE sequence‑of‑event logging with time‑stamp for fault trace‑back.
Modbus‑RTU (RS485) bus communication, upload data & receive commands from PLC / DCS upper‑level systemManualsLib.
Local on‑site parameter setting, status reading via MD21 operator panel in kit set.

ABB M102‑M Kit Motor Protection Unit

Motor Control Center (MCC / MNS low‑voltage switchgear cabinet) Main‑stream intelligent motor protection component for low‑voltage AC motors, replaces traditional thermal relay + discrete auxiliary relays, integrates protection‑control‑monitoring in one unitManualsLib.
Process industrial plants Water‑treatment, chemical industry, cement, metallurgy, power‑plant auxiliary systems; for pumps, fans, compressors, conveyors and other critical low‑voltage motor loads.
Factory automation & production lines Provides motor safety protection, local‑remote control, and field‑bus data acquisition for production‑line drive motors.
Building & infrastructure projects HVAC fans, water‑supply pumping sets in large‑scale commercial buildings, subway auxiliary equipment.
System‑level value Reduces quantity of discrete components; realizes remote motor status monitoring, fault diagnosis and predictive maintenance; simplifies cabinet wiring and maintenance work.