ABB Current Monitoring Relay 1 Phase DPDT DIN Rail 0.1mA to 100mA 240 V dc/ac CM-SRS Series 1SVR730840R0400 CM-SRS.21S

ABB 1SVR730840R0400 CM-SRS.21S current monitoring relay is engineered for professional industrial applications requiring reliable current sensing and control. It supports single-phase electrical circuits with a DPDT (Double Pole Double Throw) contact configuration, allowing flexible integration in electrical control systems.

This relay senses currents ranging from 0.1mA to 100mA, effectively detecting both undercurrent and overcurrent conditions to protect electrical equipment and prevent damage. Its compact form factor (103.7mm length, 22.5mm width, and 85.6mm height) is optimized for easy DIN rail mounting, saving space within electrical panels.

Operational power consumption is low at 0.75W, and it utilizes screw type terminals for reliable wiring. The relay accepts both 240 V dc and 240 V ac supply voltages, supporting applications with AC or DC power sources. It features an adjustable time delay function of up to 30 seconds, enabling customization of the relay’s response to fluctuations and transient conditions.

With an IP20 rating, it is protected against solid objects greater than 12.5 mm, appropriate for indoor industrial environments. The relay can operate efficiently between -20°C and +60°C ambient temperatures, making it suitable for varied working conditions encountered in manufacturing, automation, and electrical distribution systems.

Single phase DPDT contact configuration for versatile switching. Current sensing from 0.1mA to 100mA providing precise monitoring. DIN rail mount for efficient panel integration. Supports AC and DC supply voltages at 240 V.

Low power consumption of 0.75 watts reduces energy use. Adjustable time delay up to 30 seconds for response tuning. Screw terminal wiring for secure connections. IP20 protection rating for safety in industrial settings. Wide operating temperature range from -20°C to 60°C.

Complies with RoHS environmental standards.

This Monitoring Relay is ideal for use in backup power systems, industrial automation, motor protection, and electrical network safety protocols. It enables efficient control by reporting abnormal current levels, thus supporting industrial safety and process reliability.

This product is a valuable component in electrical and automation systems for industrial, manufacturing, and commercial applications. Explore more monitoring and relay solutions in the Electronics & Electricals category at EnvMart for comprehensive electrical control needs.