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1SVR740831R0300 ABB CM-ESS.1P Voltage Monitoring Relay 110–130 V AC
ABB CM-ESS.1P voltage monitoring relay 1SVR740831R0300 with a 110–130 V AC control supply, four AC/DC measuring ranges from 3 to 600 V, configurable overvoltage or undervoltage monitoring, adjustable hysteresis and one changeover output.
£117.06
Why Choose the ABB CM-ESS.1P Voltage Monitoring Relay?
The ABB CM-ESS.1P is a compact single-phase voltage monitoring relay designed for reliable AC and DC voltage supervision in industrial control and automation systems. Supplied under ABB order code 1SVR740831R0300, this version operates from a 110–130 V AC control supply and provides four selectable measuring ranges covering voltages from 3 to 600 V AC/DC.
The CM-ESS.1P can be configured for either overvoltage or undervoltage monitoring. Its four measuring ranges — 3–30 V, 6–60 V, 30–300 V and 60–600 V — enable one compact relay to supervise a broad range of control, power-supply and industrial voltage circuits.
An adjustable 3–30% hysteresis helps provide stable switching around the selected threshold, while the relay operates according to the open-circuit principle. A single changeover (SPDT) output contact, three status LEDs, Easy Connect push-in terminals and a slim 22.5 mm DIN rail housing make the CM-ESS.1P straightforward to integrate into control panels.
Key Advantages
- Selectable overvoltage or undervoltage monitoring.
- Four measuring ranges covering 3–600 V AC/DC.
- Dedicated 110–130 V AC control supply version.
- 3–30% adjustable hysteresis supports stable switching around the threshold.
- Open-circuit operating principle.
- 1 changeover (SPDT) output contact for signalling or control.
- Output contact rated at 250 V / 4 A.
- Three LEDs provide clear status indication.
- Maintenance-free Easy Connect push-in terminals simplify wiring.
- Compact 22.5 mm width conserves DIN rail space.
Key Features
- ABB CM-ESS.1P voltage monitoring relay.
- ABB order code 1SVR740831R0300.
- Overvoltage or undervoltage monitoring, configurable.
- Suitable for monitoring AC and DC voltages.
- 3–30 V measuring range.
- 6–60 V measuring range.
- 30–300 V measuring range.
- 60–600 V measuring range.
- 110–130 V AC rated control supply voltage.
- 3–30% adjustable hysteresis.
- Open-circuit principle.
- 1 c/o (SPDT) output contact.
- 250 V / 4 A output contact rating.
- Three LED indicators for operational status.
- Easy Connect push-in terminal technology.
- Compact DIN rail mounting format.
Flexible AC/DC Overvoltage and Undervoltage Monitoring
The ABB CM-ESS.1P compares the monitored AC or DC voltage with an adjustable threshold and changes the state of its output contact when the configured overvoltage or undervoltage condition occurs. Its four selectable measuring ranges provide coverage from 3 to 600 V, allowing the same relay design to be applied across many industrial voltage-monitoring tasks.
The adjustable 3–30% hysteresis helps prevent repeated relay switching when the monitored voltage fluctuates close to the threshold. Combined with precise front-face adjustment, LED status indication and a 110–130 V AC control supply, the CM-ESS.1P provides a practical monitoring interface for alarms, contactors and automation systems.
Typical Applications
- Industrial AC and DC voltage supervision.
- Control circuit voltage monitoring.
- Power supply monitoring.
- Battery and DC circuit supervision.
- Industrial machinery and automation systems.
- Electrical control and distribution panels.
- Overvoltage alarm and protection circuits.
- Undervoltage alarm and protection circuits.
Technical Specifications
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| Signal / Input Range | 3–30 V | |
|---|---|---|
| Monitoring Function | Voltage | |
| Series | CM-ESS | |
| ABB order code | 1SVR740831R0300 | |
| Product group | 310921-Measuring & Monitoring Relays | |
| Product type | Voltage monitoring relay | |
| Monitoring function | Overvoltage or undervoltage, configurable | |
| Measured voltage | AC/DC | |
| Measuring range 1 | 3–30 V | |
| Measuring range 2 | 6–60 V | |
| Measuring range 3 | 30–300 V | |
| Measuring range 4 | 60–600 V | |
| Rated control supply voltage | 110–130 V AC | |
| Hysteresis | 3–30% of threshold value, adjustable | |
| Operating principle | Open-circuit principle | |
| Outputs | 1 changeover (SPDT) contact | |
| Contact rating | 250 V / 4 A | |
| Maximum output circuit operating voltage UL/CSA | 300 V AC | |
| UL/CSA contact rating | B300 | |
| Status indication | 3 LEDs | |
| Connection technology | Easy Connect push-in / screwless terminals | |
| Protection rating | Housing IP50, terminals IP20 | |
| Housing material classification | UL 94 V-0 | |
| Operating temperature | -20 to +60 °C | |
| Storage temperature | -40 to +85 °C | |
| Mounting | DIN rail | |
| Dimensions (W × H × D) | 22.5 × 85.6 × 103.7 mm | |
| Net weight | 0.155 kg | |
| EAN | 4016779852425 |
Frequently Asked Questions
What does the ABB CM-ESS.1P monitor?
The CM-ESS.1P provides configurable overvoltage or undervoltage monitoring for AC and DC voltage circuits.
What voltage ranges can the CM-ESS.1P measure?
The CM-ESS.1P provides four selectable measuring ranges: 3–30 V, 6–60 V, 30–300 V and 60–600 V.
What supply voltage does this CM-ESS.1P require?
ABB order code 1SVR740831R0300 operates from a 110–130 V AC control supply.
Is the hysteresis adjustable on the CM-ESS.1P?
Yes. The CM-ESS.1P provides 3–30% adjustable hysteresis relative to the selected threshold value.
What output does the CM-ESS.1P provide?
The CM-ESS.1P provides one changeover (SPDT) output contact rated at 250 V / 4 A for connection to alarms, contactors and control circuits.
Trusted ABB Voltage Monitoring Technology
ABB CM-ESS voltage monitoring relays provide flexible AC/DC overvoltage and undervoltage supervision, combining multiple measuring ranges, adjustable hysteresis and compact Easy Connect DIN rail installation for industrial control systems.
