RS PRO RS PRO DPDT 17.5mm Monitoring Relay

RS PRO 3 Phase Under/Overvoltage Relay with Phase Sequencing RS PRO 3 phase monitoring relays are used to connect to 3 or 4 wire power supplies.
This relay is designed to monitor its own power supply and, in combination with an external contactor, interrupt the supply to the load/equipment in the event of a fault.
For a function output relay to be energized, all phases (and neutral, if applicable) must be present, the phase sequence must be correct, and the measured phase asymmetry/unbalance must be within set limits.
If any of these conditions are not met, the relay (+ contactor) will cut off the current and shut off the power supply, thus protecting the equipment.
Features and Benefits Monitoring relay Compact 17.5 mm DIN rail housing Microprocessor based Measures and monitors true RMS phase-to-phase voltage (3-wire) or phase-to-neutral voltage (4-wire) Selectable nominal voltage to match most common 3-wire or 4-wire supply voltages Monitors its own power supply to detect when one or more phases exceed their set undervoltage or overvoltage trip levels Detects incorrect phase sequence, loss of phase, and loss of neutral1 Adjustable undervoltage and overvoltage trip levels and time delays DPDT relay output: 5 A Green LED indicates power status and red LED indicates relay status Electrical Specifications Inputs: L1, L2, L3, N Power/Monitoring Voltage Un: This product offers a choice of six nominal voltages 3-wire monitoring: 380, 400, 415 V ac 4-wire monitoring: 220, 230, 240 V ac Frequency range: 48 to 63Hz Power Supply Voltage Fluctuation: 243-540V AC (L>) Overvoltage Category III (IEC60664) Rated Impulse Withstand Voltage: 4 kV (1.2/50 μs) Power Consumption (Max): 2.5 VA Outputs: 15, 16, 18/25, 26, 28 Relay Configuration: DPDT Output Ratings: 1 → 250 V AC 5 A, 15 → 250 V AC 2 A, 1 → 25 V DC 5 A Electrical Life: More than 150,000 operations at rated load Dielectric Voltage: 2 kV AC (rms) IEC60947-7-1 Rated Impulse Withstand Voltage: 4 kV (1.2/50 μs) IEC 60664 Dimensions W: 17.5 mm x H: 89 mm x D :66.5 mmNote: For further specifications and setup information please refer to the RS PRO datasheet.