ABB 1SCA022657R9090 MCU2A02V2‑4 Motor Control Unit

ABB 1SCA022657R9090 MCU2A02V2‑4 is a compact motor control unit for ABB INSUM low‑voltage motor management system. It serves as local intelligent control core for motor feeder, realizing motor overload, short‑circuit and earth‑fault protection, current‑voltage measuring and field‑bus communication function for low‑voltage motor control cabinet.

This discontinued unit covers 2‑63A motor current range with VU voltage measurement function. It exchanges data with upper‑level INSUM system via field bus, provides local status LED indication and fault recording. It is widely used as replacement spare‑part for on‑site troubleshooting, equipment maintenance and legacy low‑voltage‑motor‑control‑system retrofit projects.

Main Specifications

• Brand: ABB
• Model: 1SCA022657R9090, Type: MCU2A02V2‑4
• Product Type: INSUM Intelligent Motor Control Unit
• Applicable Current Range: 2‑63A, with VU voltage measuring function
• Protection Function: Overload, short‑circuit, earth‑fault motor protection
• Communication: INSUM field bus interface for upper‑system data exchange
• Feature: Local LED status indication, fault event memory, ATEX intrinsic‑safety approval
• Power Supply: 10‑30 VDC auxiliary power input
• Mounting: DIN‑rail installation inside low‑voltage motor control cabinet
• Operating Temperature Range:‑25℃ ~ +70℃
• Application: Spare‑part replacement for low‑voltage intelligent motor‑management equipment

Core Functions

• Realize multi‑dimension motor protection including overload, short‑circuit and earth‑fault trip protection
• Measure motor operating current and voltage value, transmit real‑time data to INSUM upper monitoring system
• Field‑bus communication supports remote monitoring, parameter setting and fault event uploading
• On‑board LED indicators display running status, trip alarm and fault code for fast on‑site inspection
• Built‑in fault memory stores historical trip records for post‑failure analysis and troubleshooting
• Intrinsic‑safety design adapts to hazardous‑area low‑voltage motor‑control application scenarios
• DIN‑rail compact structure facilitates cabinet installation and spare‑part replacement operation

Application Scenarios

• Thermal‑power‑plant low‑voltage MCC motor‑feeder intelligent‑control cabinet configuration projects
• Petrochemical‑plant motor‑control‑center INSUM‑system supporting projects
• On‑site motor‑control‑unit fault replacement and legacy MCC‑system daily maintenance work
• Retrofit old‑style motor‑feeder to intelligent monitoring‑protection solution
• Legacy ABB INSUM MCU2‑series motor‑control‑unit spare‑parts replacement scenarios
• Spare‑parts inventory backup for heavy‑industry‑plant motor‑control‑center cabinets
• Low‑voltage MCC‑cabinet intelligent‑motor‑protection‑hardware maintenance supporting engineering projects