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Siemens 3UG4615-1CR20 3-Phase Voltage Monitoring Relay - Screw

Siemens 3UG4615-1CR20 3-Phase Voltage Monitoring Relay.

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ManufacturerSiemens

Part number3UG4615-1CR20

Type Digital Monitoring Relay

Function Phase Failure, Sequence, Undervoltage, Overvoltage

Input Voltage 3x 160-690 V AC

Frequency 50-60 Hz

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Response within 1 business hour

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12-month warranty

All units tested

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Same-day dispatch

Order by 2pm CST

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Worldwide delivery

US, EU, Asia, Middle East

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Veteran-owned

CAGE: 9NK75

3-phase voltage monitoring Undervoltage and overvoltage detection Phase sequence and failure monitoring Adjustable hysteresis and delays Separate contacts for Umin/Umax Screw terminal connection

Product description

The Siemens 3UG4615-1CR20 is a digital monitoring relay for 3-phase line voltage, monitoring phase sequence, phase failure, undervoltage, and overvoltage. It operates with 3-phase voltages from 160 to 690 V at 50 to 60 Hz. This relay features adjustable hysteresis (1-20 V) for both undervoltage (Umin) and overvoltage (Umax) thresholds, with separate delay settings (0-20 s) for each. It provides one change-over contact for Umin monitoring and another for Umax monitoring, utilizing screw terminals.

This relay is vital for protecting sensitive electrical equipment and motors in industrial settings from damaging voltage fluctuations and phase issues. Its dual monitoring capability for both under and overvoltage provides comprehensive protection for 3-phase systems.

Stanlo Automation, a veteran-owned surplus industrial parts distributor, carries the Siemens 3UG4615-1CR20. Secure this reliable voltage monitoring relay to ensure the stable operation and longevity of your machinery.

Technical specifications

Type	Digital Monitoring Relay
Function	Phase Failure, Sequence, Undervoltage, Overvoltage
Input Voltage	3x 160-690 V AC
Frequency	50-60 Hz
Umin/Umax Hysteresis	1-20 V
Umin/Umax Delay	0-20 s
Contacts	1 CO for Umin, 1 CO for Umax
Terminal Type	Screw

Common applications

Industrial power systems

Motor protection

Pump stations

HVAC controls

Manufacturing automation

Process machinery

Compatible systems

3-phase line voltage systems 160-690 V AC, 50-60 Hz

Also known as

Siemens 3UG4615 voltage monitor 3UG4615-1CR20 relay Siemens 3-phase voltage protection

Replaces / compatible with

The preferred successor is the Siemens 3UG5616-1CR20. This relay monitors 3-phase line voltage, including undervoltage and overvoltage conditions.

Technical note

Expert tip

This relay is marked for phase-out, with the 3UG5616-1CR20 being the recommended replacement for new applications requiring 3-phase voltage monitoring.

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Frequently asked questions

What specific voltage conditions does the Siemens 3UG4615-1CR20 monitor?

The Siemens 3UG4615-1CR20 monitors 3-phase line voltage for both undervoltage (Umin) and overvoltage (Umax) conditions, with adjustable hysteresis and delays for each. It also detects phase sequence and phase failure, providing comprehensive protection.