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1SVR740841R1200 ABB CM-SRS.21P Current Monitoring Relay 110-130 V AC
ABB CM-SRS.21P 1SVR740841R1200 is a 110–130 V AC current monitoring relay designed for overcurrent and undercurrent supervision in industrial control, machinery and automation systems.
£117.06
Why Choose the ABB CM-SRS.21P Current Monitoring Relay?
The ABB CM-SRS.21P, order code 1SVR740841R1200, is a compact and dependable current monitoring relay designed for supervising electrical current in industrial control, machinery and automation applications. As part of the ABB CM-SRS current monitoring relay series, it provides configurable current supervision for detecting abnormal operating conditions in electrical loads and circuits.
The CM-SRS.21P is designed for overcurrent or undercurrent monitoring, allowing equipment to respond when measured current rises above or falls below the configured threshold. The CM-SRS range supports low-current supervision for applications such as load monitoring, loss-of-load detection and machinery condition monitoring.
With a rated control supply voltage of 110–130 V AC and a compact DIN-rail format, the CM-SRS.21P is suitable for integration into industrial electrical panels and automation cabinets. Its monitoring functionality helps operators detect undesirable current conditions before they disrupt machinery or process operation.
Key Advantages
- Reliable current monitoring for industrial control and automation applications.
- 110–130 V AC rated control supply voltage.
- Designed for overcurrent or undercurrent monitoring.
- Suitable for supervision of low-current electrical loads and circuits.
- Helps identify overload, reduced-load and loss-of-load conditions.
- Configurable monitoring threshold supports different industrial applications.
- Compact housing conserves space inside electrical control panels.
- DIN-rail format supports straightforward installation alongside other control equipment.
Key Features
- ABB CM-SRS current monitoring relay series.
- 110–130 V AC rated control supply voltage.
- Single-phase current monitoring functionality.
- Configurable overcurrent or undercurrent supervision.
- Designed for industrial machinery and electrical load monitoring.
- Relay output for signalling and control functions.
- Compact 22.5 mm-wide housing.
- Suitable for DIN-rail installation in control cabinets.
- Operating ambient temperature range of -20 to +60 °C.
Reliable Current Monitoring for Industrial Control Systems
Current monitoring relays supervise electrical loads by comparing measured current with a configured operating threshold. When current moves outside the required range, the monitoring relay can provide a switching signal to the associated control system, helping identify abnormal conditions and initiate an appropriate response.
The ABB CM-SRS.21P is suitable for applications where 110–130 V AC control power is available and dependable current supervision is required. Overcurrent monitoring can help identify excessive loading, while undercurrent monitoring can indicate conditions such as reduced load, interrupted operation or loss of load.
Typical Applications
- Industrial machinery current supervision.
- Overcurrent and undercurrent detection.
- Motor and electrical load monitoring.
- Loss-of-load detection.
- Pumps, fans, conveyors and processing machinery.
- Industrial automation and process control systems.
- Electrical control panels and switchboards.
Technical Specifications
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| Monitoring Function | Current | |
|---|---|---|
| Series | CM-SRS | |
| ABB order code | 1SVR740841R1200 | |
| Product group | 310921 – Measuring & Monitoring Relays | |
| Product type | Current monitoring relay | |
| Monitoring function | Overcurrent or undercurrent monitoring | |
| Rated control supply voltage | 110–130 V AC | |
| Mounting type | DIN rail | |
| Operating temperature | -20 to +60 °C | |
| Storage temperature | -40 to +85 °C | |
| Width | 22.5 mm | |
| Height | 85.6 mm | |
| Depth | 103.7 mm |
Frequently Asked Questions
What is the ABB CM-SRS.21P used for?
The CM-SRS.21P is used for current monitoring in industrial electrical and automation systems, helping detect overcurrent and undercurrent operating conditions.
What supply voltage does this CM-SRS.21P require?
This ABB CM-SRS.21P, order code 1SVR740841R1200, has a rated control supply voltage of 110–130 V AC.
Can the CM-SRS.21P monitor overcurrent and undercurrent conditions?
Yes. The CM-SRS.21P is designed for overcurrent or undercurrent monitoring, enabling supervision of different electrical load conditions.
Why use a current monitoring relay?
A current monitoring relay can detect abnormal load current and provide a switching signal to a control system, helping identify overload, reduced-load and loss-of-load conditions.
Where is the ABB CM-SRS.21P typically installed?
The relay is typically installed on a DIN rail inside an industrial electrical control panel or automation cabinet.
Trusted ABB Monitoring Technology
ABB CM measuring and monitoring relays are designed for dependable supervision of electrical parameters in industrial machinery, automation systems and control panels, supporting reliable detection of abnormal operating conditions.
