CM-MSS.41S ABB 1SVR730712R1200 Thermistor Motor Protection Relay

Model: CM-MSS.41S
Brand: ABB
Product ID: 1SVR730712R1200
EAN: 4013614496677
Product Type: Thermistor Motor Protection Relay
Product Family: CM-MSS
Sensor Circuit: 1
Sensor Type: PTC Thermistor
Rated Control Supply Voltage: 24–240 V AC/DC
Output: 2 c/o (SPDT) contacts
Connection: Screw terminals
Mounting: DIN rail
Housing Protection: IP50
Terminal Protection: IP20
Operating Temperature: -25 to +60 °C
Storage Temperature: -40 to +85 °C
Net Weight: 0.141 kg

Product Introduction

 

CM-MSS.41S is an ABB thermistor motor protection relay identified by Product ID 1SVR730712R1200 and EAN 4013614496677. It belongs to the CM-MSS range and is designed to monitor motor winding temperature through PTC thermistors.

 

The relay uses one sensor circuit and a 24–240 V AC/DC control supply. Its two changeover output contacts provide relay outputs for responding to the monitored motor condition, while screw terminals provide the electrical connection arrangement.

The CM-MSS.41S monitors temperature information from PTC sensors installed in motor windings. This allows the relay to detect thermal conditions associated with motor operation and provide an output response when the configured protection conditions are reached.

The sensor circuit includes configurable short-circuit detection and dynamic interrupted-wire detection. Fault storage can also be configured, helping retain relevant fault information for subsequent inspection.

CM-MSS.41S provides several functions for motor protection and monitoring:

• One PTC sensor circuit
• Configurable sensor-circuit short-circuit detection
• Dynamic interrupted-wire detection
• Configurable non-volatile fault storage
• Automatic, manual or remote reset
• Test / reset function
• Two changeover output contacts
• DIP-switch configuration
• ATEX approval

These functions allow the relay to monitor the motor thermistor circuit while providing configurable response and reset behavior.

The rated control supply voltage of the CM-MSS.41S is 24–240 V AC/DC. The relay provides 2 c/o (SPDT) output contacts and uses screw terminals for connection.

The published electrical ratings include up to 4 A at 230 V AC-12, 3 A at 230 V AC-15, 4 A at 24 V DC-12 and 2 A at 24 V DC-13. The rated insulation voltage between the relevant circuits is 300 V, with a rated impulse withstand voltage of 4 kV for the specified output circuits.

The relay has a compact 22.5 mm product width and is intended for DIN-rail mounting. Its housing has an IP50 degree of protection, while the terminals are rated IP20.

The published product dimensions are 22.5 mm wide, 85.6 mm high and 103.7 mm deep, with a net weight of 0.141 kg.

CM-MSS.41S is specified for operation from -25 °C to +60 °C and storage from -40 °C to +85 °C.

The relay uses screw connection technology with double-chamber cage connection terminals. The specified conductor capacity accommodates flexible conductors from 0.5 to 2.5 mm² for single conductors and up to 1.5 mm² for two flexible conductors, with corresponding rigid-conductor capacities also specified in the product data.

For maintenance and replacement purposes, the complete product identification should be checked against the existing relay:

• CM-MSS.41S
• 1SVR730712R1200
• 4013614496677
• CM-MSS Thermistor Motor Protection Relay

The CM-MSS.41S type designation identifies the relay version, while 1SVR730712R1200 provides the ABB Product ID. The EAN provides an additional product identification reference for procurement and inventory records.

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