ABB Monitoring Relay Undervoltage & Phase Failure Detection 3, 1 Phase, SPST Contact, DIN Rail Mount, 440V AC 1SVR550881R9400

ABB 1SVR550881R9400 Monitoring Relay is engineered for reliable undervoltage and phase failure detection in electrical systems with single-phase or three-phase configurations operating up to 440V AC. Its SPST contact configuration and DIN rail mounting make it an efficient and easy-to-install solution for industrial, manufacturing, motor control, and data center applications.

The device features a 150 ms time delay which prevents unnecessary trips due to transient disturbances, enhancing the safety and stability of connected equipment. The screw terminal type ensures secure and straightforward wiring, suitable for both new installations and maintenance work.

Compact dimensions (78.5 mm L x 22.5 mm W x 78 mm H) allow it to fit neatly inside control cabinets even where space is limited. The housing is rated IP50, providing robust dust protection for harsh industrial environments.

Designed with an LED indicator, the relay offers instant visual feedback on system status, facilitating rapid diagnostics during operation. Conformance to CE, CSA, and UL standards guarantees the relay meets international safety and quality requirements.

This monitoring relay is ideal for applications including motor control circuits, manufacturing plants, data centers, and any installation requiring dependable phase anomaly detection and protection. It operates without the need for a separate power supply as it is powered directly from the measuring circuit.

Designed for both single-phase and three-phase systems with neutral monitoring capability. Compact dimensions of 78.5 mm length, 22.5 mm width, and 78 mm height suitable for tight control cabinets. Screw terminal contacts provide secure connections and ease of installation.

150 ms time delay reduces nuisance tripping from transient faults. IP50 rated housing protects against dust in demanding industrial settings. Complies with CE, CSA, and UL safety standards. Operating temperature up to 60°C supports a wide range of environments.

Integrated LED indicator for real-time operational status.

Enhance system reliability and safety using ABB Monitoring Relays available through EnvMart. Explore more from ABB and related relays in our extensive catalog for automation, industrial control, and electrical protection devices.