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1SVR730740R9100 ABB CM-TCS.21S Temperature Monitoring Relay -50 to +50 °C 24 V AC/DC
ABB CM-TCS.21S 1SVR730740R9100 is a 24 V AC/DC PT100 temperature monitoring relay with a -50 to +50 °C measuring range, two adjustable thresholds and configurable changeover outputs for overtemperature, undertemperature and window monitoring.
£139.98
Why Choose the ABB CM-TCS.21S Temperature Monitoring Relay?
The ABB CM-TCS.21S 1SVR730740R9100 is a compact temperature monitoring relay designed for monitoring temperatures in industrial processes, machinery and equipment using a PT100 resistance temperature sensor. Its -50 to +50 °C measuring range makes it suitable for applications requiring reliable supervision around and below ambient temperature.
The CM-TCS.21S provides overtemperature, undertemperature and window temperature monitoring with two adjustable thresholds. It supports a single PT100 sensor circuit using 2- or 3-wire connection, while adjustable hysteresis allows the switching behaviour to be matched to the requirements of the application.
Operating from a 24 V AC/DC control supply, the relay provides two changeover contacts that can be configured as 2 × 1 c/o or 1 × 2 c/o. Screw terminals, LED status indication and a compact 22.5 mm wide DIN-rail housing make it practical for temperature monitoring in industrial control panels.
Key Advantages
- Reliable -50 to +50 °C temperature monitoring.
- Designed for use with PT100 temperature sensors.
- Supports overtemperature, undertemperature and window monitoring.
- Two independently adjustable temperature thresholds.
- Adjustable hysteresis of 2–20%.
- Supports 2- or 3-wire PT100 sensor connection.
- Short-circuit detection provides additional sensor-circuit supervision.
- Configurable 2 × 1 c/o or 1 × 2 c/o output contacts.
- Compact 22.5 mm wide housing conserves DIN-rail space.
Key Features
- ABB CM-TCS.21S temperature monitoring relay.
- -50 to +50 °C measuring range.
- PT100 sensor input.
- 1 sensor circuit.
- 2 adjustable thresholds.
- 24 V AC/DC rated control supply.
- Overtemperature monitoring.
- Undertemperature monitoring.
- Window temperature monitoring.
- Adjustable 2–20% hysteresis.
- Short-circuit detection.
- Configurable open- or closed-circuit operating principle.
- 2 × 1 c/o or 1 × 2 c/o contacts, configurable.
- Screw terminals for electrical connections.
Flexible PT100 Temperature Monitoring
The ABB CM-TCS.21S evaluates the resistance of a connected PT100 temperature sensor to supervise temperatures between -50 and +50 °C. Configurable overtemperature, undertemperature and window monitoring allows the relay to respond when temperature rises above, falls below or moves outside the selected operating limits.
Two adjustable thresholds and 2–20% adjustable hysteresis allow the switching response to be tailored to the process. The configurable output arrangement makes it possible to use the two changeover contacts for separate threshold signalling or coordinated temperature monitoring, providing flexibility for alarm, control and protective functions.
Typical Applications
- Industrial machine temperature monitoring.
- Control cabinet and enclosure temperature supervision.
- Heating and cooling control systems.
- Refrigeration and cold-storage equipment.
- Process temperature monitoring.
- Temperature supervision of solid, liquid and gaseous media.
- HVAC and ventilation systems.
- Industrial automation and control panels.
Technical Specifications
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| Monitoring Function | Temperature / thermistor | |
|---|---|---|
| Series | CM-TCS | |
| ABB order code | 1SVR730740R9100 | |
| Product type | Temperature monitoring relay | |
| Measuring range | -50 to +50 °C | |
| Temperature sensor | PT100 | |
| Sensor circuits | 1 | |
| Sensor connection | 2- or 3-wire | |
| Number of thresholds | 2 | |
| Thresholds | Adjustable | |
| Hysteresis | 2–20%, adjustable | |
| Monitoring functions | Overtemperature, undertemperature and window temperature | |
| Short-circuit detection | Yes | |
| Operating principle | Open or closed circuit, configurable | |
| Rated control supply voltage | 24 V AC/DC | |
| Output | 2 × 1 c/o or 1 × 2 c/o contacts, configurable | |
| Terminal type | Screw terminals | |
| Housing protection | IP50 | |
| Terminal protection | IP20 | |
| Operating temperature | -40 to +60 °C | |
| Storage temperature | -40 to +85 °C | |
| Product width | 22.5 mm | |
| Product height | 85.6 mm | |
| Product depth | 103.7 mm | |
| Net weight | approx. 0.138 kg | |
| EAN | 4016779852746 |
Frequently Asked Questions
What is the ABB CM-TCS.21S 1SVR730740R9100 used for?
It is a temperature monitoring relay used with a PT100 sensor to monitor temperatures from -50 to +50 °C in industrial processes, machinery and control systems.
What temperature range does the CM-TCS.21S monitor?
The CM-TCS.21S has a measuring range of -50 to +50 °C.
Which temperature sensor does the ABB CM-TCS.21S use?
The relay is designed for a PT100 resistance temperature sensor and supports 2- or 3-wire sensor connection.
What control supply does the CM-TCS.21S require?
ABB order code 1SVR730740R9100 operates from a 24 V AC/DC rated control supply.
What temperature monitoring functions does the CM-TCS.21S provide?
The relay supports overtemperature, undertemperature and window temperature monitoring with two adjustable thresholds, adjustable hysteresis and configurable changeover outputs.
Trusted ABB Temperature Monitoring Technology
ABB CM-TCS temperature monitoring relays provide flexible PT100-based temperature supervision for machinery and industrial processes, supporting dependable alarm, control and protective functions across a wide range of automation applications.
