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.22S Therm. motor protec. relay 2c/o, 24VAC/DC
£56.15
Why Choose the ABB 1SVR730700R0200 CM-MSS.22S Thermistor Motor Protection Relay?
The ABB 1SVR730700R0200 is a reliable CM-MSS.22S thermistor motor protection relay designed to protect electric motors equipped with PTC temperature sensors against overheating, overload conditions and insufficient cooling. This compact monitoring relay provides dependable thermal protection for industrial motors, machinery and automation systems.
Part of the ABB CM-MSS thermistor motor protection relay family, the 1SVR730700R0200 continuously monitors a motor’s PTC sensor circuit and responds when excessive winding temperature is detected. The relay also monitors sensor circuit faults such as short circuits and interrupted wires, helping improve equipment safety and reliability.
The ABB 1SVR730700R0200 operates with a 24 V AC/DC control supply and provides two changeover (2 C/O / SPDT) relay outputs rated up to 250 V AC / 4 A. Its compact DIN rail mounting format makes it ideal for electrical control panels, motor control centres and industrial automation installations.
Key Advantages
- Reliable ABB CM-MSS thermistor motor protection relay.
- Protects motors using PTC temperature sensors.
- Detects motor overheating and sensor circuit faults.
- 24 V AC/DC supply voltage for flexible control applications.
- Two changeover relay contacts provide versatile switching options.
- Compact DIN rail housing saves panel space.
Key Features
- ABB CM-MSS.22S thermistor motor protection relay.
- 1 PTC sensor input circuit.
- 2 changeover (SPDT) relay outputs.
- 24 V AC/DC rated control supply.
- 250 V AC / 4 A contact rating.
- Automatic, manual or remote reset functionality.
- Dynamic interrupted-wire detection.
- Short-circuit monitoring of sensor circuit.
- LED status indication.
- Screw terminal connection technology.
- DIN rail mounting design.
Reliable Motor Temperature Protection
Thermistor motor protection relays such as the ABB 1SVR730700R0200 provide direct monitoring of motor winding temperature through embedded PTC sensors. When unsafe temperature levels are detected, the relay changes state to disconnect or alarm connected control circuits, helping prevent motor damage.
The CM-MSS.22S is designed for industrial environments where dependable thermal protection, fault detection and flexible reset options are required. Its compact DIN rail format enables simple integration into automation cabinets and electrical distribution systems.
Typical Applications
- Industrial motor protection systems.
- Pumps and compressor applications.
- Machine tools and production equipment.
- Fans and ventilation systems.
- Motor control centres (MCCs).
- Industrial automation control panels.
Technical Specifications
Tick the specs you need, then view products that match.
| Terminal Type | Screw | |
|---|---|---|
| Monitoring Function | Temperature / thermistor | |
| Switching Current (A) | 4 A | |
| Mounting Type | DIN rail | |
| Coil / Supply Voltage | 24 V AC, 24 V DC | |
| Contacts | 1 C/O | |
| IP Rating | IP20, IP50 | |
| Manufacturer | ABB | |
| Series | CM-MSS | |
| Product code | 1SVR730700R0200 | |
| Model | CM-MSS.22S | |
| Product type | Thermistor motor protection relay | |
| Protection function | PTC motor temperature monitoring | |
| Sensor input | 1 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 | |
| Terminal type | Screw terminals | |
| Protection rating | IP50 housing / IP20 terminals | |
| Dimensions (H × W × D) | approx. 85.6 × 22.5 × 103.7 mm | |
| Weight | approx. 0.132 kg | |
| HS Code | 85364900 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB 1SVR730700R0200 used for?
The ABB 1SVR730700R0200 is a thermistor motor protection relay used to monitor PTC temperature sensors and protect motors against overheating.
What type of sensor does this relay monitor?
The CM-MSS.22S monitors PTC thermistor sensors installed in motor windings.
What supply voltage does the relay require?
The relay operates with a 24 V AC/DC control supply.
How many output contacts are included?
The ABB 1SVR730700R0200 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.
