RS PRO 3 Phase Monitoring Relay 400 V AC Supply Voltage, SPDT Contact, DIN Rail Mount 102-6137

RS PRO 102-6137 Monitoring Relay is a robust and precise device designed for monitoring three-phase electrical systems operating at 400 V AC supply voltage. With SPDT (Single Pole Double Throw) contact configuration, this relay is ideal for industrial electrical and automation control applications.

This relay continuously measures phase-to-phase voltages and uses microprocessor technology to detect overvoltage and undervoltage conditions. It automatically breaks the circuit if voltage levels go beyond preset limits, protecting equipment from damage due to voltage fluctuations. Adjustable voltage thresholds allow setting undervoltage trip at 300 to 380 V and overvoltage trip at 420 to 500 V, with a configurable time delay of 0.2 to 10 seconds to help avoid false trips during short disturbances.

Designed for ease of installation, it features DIN rail mounting, compact size (66.5 mm length, 17.5 mm width, and 89 mm height), and screw terminals capable of handling up to 8 A contact current. The relay operates reliably over a wide temperature range from -20°C to +60°C and includes phase failure and phase sequence detection to ensure proper phase operation.

Operational state is clearly indicated using two LEDs for quick diagnostics. The relay is compliant with key international standards such as IEC 60664, REACH, RoHS, UL 508, CSA C22.2 No. 14-13, and EMC directives, ensuring safety and application suitability in industrial control environments.

Its rugged construction and versatile features make it suitable for use in industrial manufacturing, building automation, and electrical distribution systems where voltage monitoring and protection are critical. The microprocessor-based design enhances accuracy, protection, and operational reliability, supporting stable electrical infrastructure management.

This relay supports three-phase electrical systems with SPDT contact configuration. Equipped with DIN rail mounting for easy installation. Operates within a temperature range from -20°C to +60°C. Monitors voltage with adjustable under and overvoltage thresholds between 300 to 380 V and 420 to 500 V respectively.

Features phase failure and phase sequence sensitivity with microprocessor-based control. Includes two LEDs for operational state indication. Time delay settings adjustable from 0.2 to 10 seconds to prevent nuisance trips.

Uses screw terminals supporting up to 8 A contact current. Designed to meet multiple industrial standards including IEC 60664, REACH, RoHS, UL 508, and CSA requirements. Compact dimensions measuring 66.5 mm length, 17.5 mm width, and 89 mm height.

This RS PRO Monitoring Relay 102-6137 is a trusted solution for phase and voltage monitoring applications in demanding industrial and commercial environments. It is listed under the Monitoring Relays category at EnvMart, providing users with reliable voltage protection and system monitoring capabilities.