Product Overview
The ABB CM-MSS Thermistor Motor Protection Relay is an electronic monitoring device designed to protect electric motors against overheating by monitoring compatible PTC thermistor sensors installed in motor windings.
When the monitored temperature exceeds the specified threshold, the relay changes its output state to help prevent motor damage. Depending on the exact version, the CM-MSS series may also provide sensor-circuit fault monitoring and automatic, manual or remote reset functionality.
Designed for industrial electrical control systems, this relay is suitable for motor protection applications where reliable temperature monitoring is essential.
Technical Specifications
Brand: ABB
Model Series: CM-MSS
Product Type: Thermistor Motor Protection Relay
Monitoring Method: PTC thermistor sensor
Application: Motor winding temperature monitoring
Control Supply Voltage: Depends on the complete model suffix; versions include 24–240V AC/DC and other supply configurations
Output Contacts: Depends on the specific version; configurations include changeover contacts
Reset Function: Model-dependent
Mounting: DIN rail
Installation: Industrial electrical control panels
Key Features
Monitors motor temperature through compatible PTC sensors
Helps protect motors against overheating
Supports industrial motor protection systems
Compact design for control-panel installation
Multiple versions available for different supply voltages and contact configurations
Applications
The ABB CM-MSS thermistor protection relay is suitable for:
Electric motors and generators
Industrial pumps and compressors
Fans and ventilation systems
Machinery and automation panels
Motor temperature monitoring and protection systems
Product Condition
Please refer to the listing photographs and condition details for the exact item available.
Ordering Information
Contact Marine Industrial Parts for pricing, availability, bulk enquiries and worldwide shipping.
Compatibility note: Please confirm the complete ABB model number, supply voltage and output contact configuration before ordering.
