ABB E236-US2 Undervoltage Monitoring Relay, 10-60 V AC/DC, 1 C/O 2CDE165010R2001

Voltage dips and dropouts can halt production, damage equipment, or leave systems in unsafe states. The ABB E236-US2 monitoring relay watches single-phase AC or DC voltage and trips its output contact when the measured value falls below a user-set threshold. It is self-powered from the monitored circuit, so no separate supply is needed.

Who is it for

Panel builders and maintenance teams who need compact, DIN-rail-mounted undervoltage protection for control circuits, motor feeders, or auxiliary supplies. It fits 17.5 mm wide, one module on the rail.

Main features

• Monitors undervoltage in 10–60 V AC/DC systems
• Self-powered from the measuring input
• Adjustable threshold 10–100% of measuring range
• Adjustable time delay 0.1–10 s to ignore short dips
• 1 changeover contact rated 5 A at 250 V AC
• Screw terminals, IP40 housing / IP20 terminals

Specifications

• Function: Undervoltage monitoring
• Measuring voltage range: 10–60 V AC/DC
• Supply voltage: 10–60 V AC/DC (self-powered)
• Output contacts: 1 C/O (changeover)
• Rated output current (AC-1): 5 A @ 250 V AC
• Threshold adjustment range: 10–100% of measuring range
• Time delay (t_on/t_off): adjustable 0.1–10 s
• Mounting type: DIN rail (EN 60715)
• Protection degree (housing/terminals): IP40 / IP20
• Operating temperature: -20 to +60 °C
• Terminal type: screw terminals
• Rated insulation voltage (Ui): 300 V
• Rated impulse withstand voltage (Uimp): 4 kV
• Frequency range (AC): 40–70 Hz
• Power consumption: 1.5 VA / 0.8 W
• Number of phases: single-phase / DC
• Module width: 1 module (17.5 mm)

Tips

Set the threshold just below normal operating voltage to avoid nuisance tripping on minor fluctuations. Use the time delay to ride through short dips or motor starting transients.