ABB CM-MSS6 (Order code: 1SVR430710R0200) is a DIN-rail mounted thermistor motor protection relay from ABB CM monitoring relay series. It works with built-in PTC temperature sensors embedded inside motor windings to deliver direct winding temperature monitoring.
This unit supports up to 6 independent PTC sensor circuits, equipped with DPDT output contacts. It continuously detects overtemperature, sensor wire breakage and short-circuit faults on measuring loops. The wide power supply range of 24–240 V AC/DC simplifies cabinet design for various automation systems.
Front panel status LEDs offer instant visual diagnosis. Users can perform local reset via pushbutton or remote reset through external terminals. Compact 22.5mm width optimizes space inside motor control centers.
Commonly deployed on fans, pumps, compressors and industrial drive motors. Widely stocked as spare part for motor control cabinet maintenance and field retrofits.
Tags: ABB CM-MSS6, 1SVR430710R0200, PTC motor protection relay, temperature monitoring relay, ABB CM series spare
Overheating is one of the leading causes of permanent motor damage. The ABB CM-MSS6 1SVR430710R0200 solves this challenge by real-time monitoring of PTC thermistors fitted inside motor windings, more accurate than indirect current-based overload protection.
Support for six sensor circuits makes it suitable for large motors with multiple winding temperature checkpoints. Integrated circuit fault detection alerts technicians to broken sensor cables before abnormal temperature triggers shutdown. Non-volatile fault memory retains failure records even after power loss.
Standard DIN rail installation ensures straightforward replacement. It meets IEC 60947-8 standards and operates reliably across industrial environments from water treatment plants to chemical facilities.
Many plant operators maintain this exact part number as critical spare to reduce downtime when motor thermal protection devices fail.
Tags: ABB 1SVR430710R0200, CM-MSS6 relay, thermistor monitoring relay, motor thermal protection spare
