Hager EUM200 3-Phase Monitoring Relay, 208-480V AC, SPDT, DIN Rail

The Hager EUM200 is a 3-phase monitoring relay that continuously checks phase sequence, phase failure, overvoltage, undervoltage, and asymmetry. Unlike basic voltage relays, it offers independent adjustable thresholds for overvoltage, undervoltage, and asymmetry, plus separate response and recovery delays, giving precise control in industrial and building automation.

Highlights

• Monitors 3-phase networks from 208 to 480 V AC (L-L)
• Adjustable thresholds: overvoltage 2-20%, undervoltage 2-20%, asymmetry 5-20% of Un
• Independent response delay (t1) and recovery delay (t2): 0.1 to 10 s each
• 1 changeover contact (SPDT) rated 5 A / 250 V AC
• Compact 2 TE (35 mm) DIN rail housing with LED status indication

In daily use

Install the EUM200 on a DIN rail and connect it to the three phases and neutral. Use the front-panel potentiometers to set the desired thresholds and delays. The relay output changes state when a fault is detected, and the LEDs show phase presence, relay status, and fault conditions. It is suitable for protecting motors, pumps, and other three-phase equipment.

Full specifications

• Relay type: Monitoring relay
• Number of phases: 3
• Nominal operating voltage (L-L): 3N AC 400/230 V
• Operating voltage range (L-L): AC 208-480 V
• Operating voltage range (L-N): AC 120-277 V
• Frequency: 50/60 Hz
• Monitoring functions: Phase sequence, phase failure, overvoltage, undervoltage, asymmetry
• Output contact configuration: 1 changeover (SPDT)
• Output contact rating (AC1): 5 A / 250 V AC
• Adjustable overvoltage threshold: 2-20% of Un
• Adjustable undervoltage threshold: 2-20% of Un
• Adjustable asymmetry threshold: 5-20% of Un
• Adjustable response delay (t1): 0.1 - 10 s
• Adjustable recovery delay (t2): 0.1 - 10 s
• Mounting type: DIN rail (EN 60715)
• Module width: 2 TE (35 mm)
• Protection degree (terminals): IP20
• Protection degree (front): IP40
• Operating temperature: -5 to +55 °C
• Connection type: Screw terminals
• Status indication: LEDs (phase presence, relay status, fault)

Final note

The Hager EUM200 offers reliable three-phase monitoring with flexible settings in a compact DIN rail module.