The CM-S Series comprises single-phase current monitoring relays designed for over- and undercurrent protection in AC/DC systems, with a range of 3 mA to 15 A. All devices feature a compact 22.5 mm width housing, enabling dense panel mounting. Functions include selectable overcurrent or undercurrent monitoring, and window monitoring capabilities for simultaneous detection of both conditions. The relays support both alternating and direct current measurements, providing reliable protection for single-phase installations.
Single-phase Monitoring Relays
Voltage and current measuring
For the monitoring of currents and voltages in single-phase AC/DC systems, ABB's CM range contains a wide selection of powerful and compact devices all in an only 22.5 mm wide housing. This product range includes current and voltage monitoring relays for over- and undercurrent protection, over- and undervoltage protection and phase loss monitoring –from 3 mA to 15 A and from 3 V to 600 V. Incorporating ABB's long-term experience the CM range provides highest safety and reliability for your electric installation.
Main Benefits
Main Features
| ABB Inc. | |
|---|---|
| Product Category | Protective Relays and Monitoring Relays |
| Product Number | CM-S Series |
| Product Name | Single-phase Monitoring Relays |
| Voltage Sensitive Relay | Overvoltage Protection (optional feature); Undervoltage (optional feature) |
