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1SVR730660R0100 ABB CM-IWS.1S Insulation Monitoring Relay 1–100 kΩ 24–240 V AC/DC
ABB CM-IWS.1S 1SVR730660R0100 is a 24–240 V AC/DC insulation monitoring relay with a 1–100 kΩ adjustable response range and one changeover contact for unearthed AC, DC and mixed AC/DC systems up to 250 V AC or 300 V DC.
£208.75
Why Choose the ABB CM-IWS.1S Insulation Monitoring Relay?
The ABB CM-IWS.1S 1SVR730660R0100 is a compact and reliable insulation monitoring relay designed for continuous supervision of insulation resistance in unearthed IT electrical systems. As part of the ABB CM-IWS insulation monitoring relay series, it is suitable for unearthed AC, DC and mixed AC/DC systems where early detection of deteriorating insulation can help maintain electrical safety and system availability.
The CM-IWS.1S supports monitored distribution systems up to 250 V AC or 300 V DC and provides an adjustable insulation resistance response range of 1–100 kΩ. It can be used with single-phase control circuits as well as three-phase main circuits, making it a versatile monitoring solution for industrial machines, installations and power systems using an unearthed supply arrangement.
A wide 24–240 V AC/DC control supply range simplifies integration into different control systems, while the relay provides one changeover (SPDT) output contact for signalling or control functions. The CM-IWS.1S accommodates system leakage capacitance up to 10 µF and uses screw terminals in a slim 22.5 mm housing for convenient DIN-rail control-panel installation.
Key Advantages
- Continuous insulation resistance monitoring for unearthed IT systems.
- Suitable for AC, DC and mixed AC/DC systems.
- Monitors systems up to 250 V AC or 300 V DC.
- Adjustable 1–100 kΩ insulation resistance response range.
- Wide 24–240 V AC/DC control supply simplifies system integration.
- 1 changeover (SPDT) output contact for signalling and control.
- Supports system leakage capacitance up to 10 µF.
- Compact 22.5 mm wide housing conserves DIN-rail space.
Key Features
- ABB CM-IWS.1S insulation monitoring relay.
- Designed for insulation monitoring in unearthed supply systems.
- 1–100 kΩ adjustable measuring range.
- 24–240 V AC/DC rated control supply voltage.
- Nominal monitored system voltage up to 250 V AC / 300 V DC.
- Suitable for unearthed AC, DC and galvanically connected AC/DC systems.
- 1 c/o (SPDT) relay output.
- Maximum system leakage capacitance of 10 µF.
- Measuring circuit frequency range of 15–400 Hz.
- Screw-terminal connections.
- Compact DIN-rail housing for industrial control cabinets.
Reliable Insulation Monitoring for Unearthed IT Systems
Insulation monitoring relays continuously supervise the insulation resistance between an unearthed electrical system and protective earth. The ABB CM-IWS.1S detects when insulation resistance falls below the configured response threshold, allowing its output contact to provide an alarm or initiate an appropriate control response before an insulation fault develops into a more serious system problem.
The ability to monitor unearthed AC, DC and mixed AC/DC networks makes the CM-IWS.1S suitable for a broad range of industrial applications. Its adjustable response threshold enables the monitoring function to be configured for the installation, while support for system leakage capacitance up to 10 µF provides flexibility in practical electrical networks.
Typical Applications
- Unearthed IT AC electrical systems.
- Unearthed IT DC electrical systems.
- Mixed AC/DC systems with galvanically connected DC circuits.
- Industrial machine and equipment control circuits.
- Three-phase main circuit insulation monitoring.
- Process and manufacturing installations.
- Industrial control and electrical distribution panels.
Technical Specifications
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| Signal / Input Range | 1–100 kΩ | |
|---|---|---|
| Monitoring Function | Insulation | |
| Series | CM-IWS | |
| ABB order code | 1SVR730660R0100 | |
| Product type | Insulation monitoring relay | |
| Function | Insulation resistance monitoring in unearthed IT systems | |
| Rated control supply voltage | 24–240 V AC/DC | |
| Monitored system voltage | 0–250 V AC / 0–300 V DC | |
| Measuring range | 1–100 kΩ | |
| Measuring circuit frequency | 15–400 Hz | |
| Maximum system leakage capacitance | 10 µF | |
| Output | 1 changeover (SPDT) contact | |
| Terminal type | Screw terminals | |
| Housing protection | IP50 | |
| Operating temperature | -25 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. 0.148 kg |
Frequently Asked Questions
What is the ABB CM-IWS.1S 1SVR730660R0100 used for?
It is an insulation monitoring relay used to continuously monitor insulation resistance in unearthed IT AC, DC and mixed AC/DC electrical systems.
What insulation resistance range does the CM-IWS.1S monitor?
The CM-IWS.1S provides an adjustable response range of 1–100 kΩ.
What system voltage can the ABB CM-IWS.1S monitor?
ABB order code 1SVR730660R0100 is designed for unearthed systems with nominal voltages up to 250 V AC or 300 V DC.
What control supply does the CM-IWS.1S require?
The relay operates from a wide 24–240 V AC/DC rated control supply.
What output does the CM-IWS.1S provide?
The relay provides one changeover (SPDT) output contact that can be incorporated into alarm, signalling or industrial control circuits.
Trusted ABB Insulation Monitoring Technology
ABB CM insulation monitoring relays provide dependable supervision of insulation resistance in unearthed electrical systems, helping machine builders, panel builders and industrial operators identify insulation deterioration and maintain reliable system operation.
