Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
CM-MSS.32S Therm. motor protec. relay 2c/o, 24VAC/DC
£59.42
Why Choose the ABB 1SVR730712R0200 CM-MSS.32S Thermistor Motor Protection Relay?
The ABB 1SVR730712R0200 is a dependable CM-MSS.32S thermistor motor protection relay designed to protect motors equipped with PTC temperature sensors against overheating and thermal overload conditions. This compact monitoring relay provides reliable motor temperature supervision for industrial automation, machinery and electrical control applications.
Part of the ABB CM-MSS thermistor motor protection relay series, the 1SVR730712R0200 continuously monitors a single PTC sensor circuit embedded in motor windings. It detects excessive temperature rise, sensor circuit short circuits and interrupted wires, helping prevent motor damage and unexpected downtime.
The ABB 1SVR730712R0200 operates with a 24 V AC/DC control supply and provides two changeover (2 C/O) relay outputs rated up to 250 V / 4 A. Its compact DIN rail mounting design makes it ideal for control cabinets, motor control centres and industrial protection systems.
Key Advantages
- Reliable thermistor motor protection relay for industrial motors.
- Monitors PTC temperature sensors installed in motor windings.
- Detects overheating, sensor short circuits and interrupted wires.
- 24 V AC/DC control supply for flexible industrial applications.
- Two changeover relay contacts provide versatile control signalling.
- Compact DIN rail housing saves valuable panel space.
Key Features
- ABB CM-MSS thermistor motor protection relay series.
- 1 sensor circuit for PTC temperature monitoring.
- 2 changeover (SPDT) relay outputs.
- 24 V AC/DC rated control supply.
- 250 V / 4 A contact rating.
- Short-circuit detection of sensor circuit.
- Dynamic interrupted-wire monitoring.
- Automatic, manual or remote reset options.
- ATEX approved motor protection design.
- LED status indication and reset/test button.
- DIN rail mounting with screw terminals.
Reliable Motor Temperature Protection
Thermistor motor protection relays such as the ABB 1SVR730712R0200 provide direct monitoring of motor winding temperatures using embedded PTC sensors. When a motor temperature limit is exceeded, the relay activates protective switching functions to help prevent overheating and equipment failure.
The CM-MSS.32S is designed for industrial environments where reliable motor protection, fast fault detection and flexible reset options are required. Its compact design allows easy integration into automation panels and electrical control systems.
Typical Applications
- Industrial motor protection systems.
- Pumps and compressor applications.
- Machine tools and manufacturing equipment.
- Fans and ventilation systems.
- Automation control cabinets.
- Industrial machinery with PTC temperature sensors.
Technical Specifications
Tick the specs you need, then view products that match.
| Terminal Type | Screw | |
|---|---|---|
| Switching Current (A) | 4 A | |
| Mounting Type | DIN rail | |
| Monitoring Function | Temperature / thermistor | |
| Coil / Supply Voltage | 24 V AC, 24 V DC | |
| Contacts | 1 C/O | |
| IP Rating | IP20, IP50 | |
| Manufacturer | ABB | |
| Series | CM-MSS | |
| Product code | 1SVR730712R0200 | |
| Model | CM-MSS.32S | |
| Product type | Thermistor motor protection relay | |
| Sensor input | 1 PTC sensor circuit | |
| Control supply voltage | 24 V AC/DC | |
| Output contacts | 2 C/O (SPDT) | |
| Contact rating | 250 V AC / 4 A | |
| Frequency | 50 / 60 Hz | |
| Mounting type | DIN rail mounting | |
| Connection type | Screw terminals | |
| Protection rating | IP50 housing / IP20 terminals | |
| Dimensions (H × W × D) | approx. 85.6 × 22.5 × 103.7 mm | |
| Weight | approx. 0.13 kg | |
| HS Code | 85364900 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB 1SVR730712R0200 used for?
The ABB 1SVR730712R0200 is a thermistor motor protection relay used to monitor PTC temperature sensors and protect motors from overheating.
What type of sensor does this relay monitor?
The CM-MSS.32S monitors a PTC thermistor sensor circuit installed in motor windings.
What control voltage does the relay require?
The relay operates with a 24 V AC/DC control supply.
How many output contacts are included?
The ABB 1SVR730712R0200 includes two changeover (2 C/O) relay outputs.
How is this relay installed?
The unit is designed for compact DIN rail mounting inside electrical control panels.
Trusted by Industrial Automation Professionals Worldwide
ABB CM-MSS thermistor motor protection relays are trusted by engineers and automation professionals to protect motors, improve system reliability and reduce costly downtime in industrial applications.
