ABB REM543BM215AAAB Multifunctional Medium‑Voltage Motor Protection Relay

Product Description

REM543BM215AAAB belongs to the ABB Relion REM543 series digital motor protection terminal. It delivers comprehensive protection, real‑time measurement and control for

medium‑voltage three‑phase induction motors. It supports thermal overload, locked‑rotor, phase unbalance, earth‑fault and short‑circuit protection, together with motor start‑up supervision and

running‑status monitoring. It connects with upper SCADA systems via serial communication and is widely deployed in petrochemical plants, thermal‑power stations, water‑treatment facilities and

metallurgical workshops for fan, pump, compressor and crusher motor protection.

Technical SpecificationsFull Model: REM543BM215AAAB Brand: ABB, Origin: Finland Product Series: REM543 Relion motor‑protection relay Auxiliary Working Power: 100‑240 VAC / 100‑240 VDC wide‑range power supply Rated Current Input: 1 A / 5 A configurable CT input Applicable Grid Frequency: 50 Hz & 60 Hz Built‑in Protection Logic: Thermal overload, locked‑rotor, start‑up supervision, phase unbalance, earth‑fault, short‑circuit, under‑voltage and over‑voltage protection Measurement Functions: Three‑phase current, voltage, power, energy and harmonic monitoring Communication Interfaces: RS485 serial port, supporting IEC‑60870‑5‑103, Modbus‑RTU, SPA‑bus Local Operation: LCD display, physical setting buttons and status‑indicator LEDs Digital Input: 8‑channel optically‑isolated switch input Relay Output: Multiple configurable contact‑relay outputs Installation: Panel flush‑mount installation for medium‑voltage switch‑cabinets Operating‑Temperature: ‑20℃ ~ +70℃ Storage‑Temperature: ‑40℃ ~ +85℃ Ambient Humidity: 5%–95% non‑condensing industrial‑grade Front‑panel Protection Grade: IP54 Net Weight: Approx. 1.5 kg Certifications: CE, UL, RoHS‑compliant, power‑system EMC certification

Key FeaturesComplete‑set customizable motor protection algorithms adapted to various‑size medium‑voltage induction motors Advanced thermal‑capacity calculation model accurately monitors motor heating during start‑up and continuous operation Start‑up supervision function detects abnormal starting conditions and prevents motor damage Accurate real‑time measurement for three‑phase current, voltage, active‑power, reactive‑power and energy Time‑stamped fault‑event log and motor start‑up history for post‑failure analysis Standard serial‑field‑bus interfaces for data‑interaction with substation upper monitoring system Compact integrated‑panel structure with straightforward local parameter‑setting and alarm inquiry Strong anti‑electromagnetic‑interference performance to adapt to harsh high‑voltage switch‑gear environments