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Siemens 3UG4615-2CR20 3-Phase Voltage Monitoring Relay - Spring

Siemens 3UG4615-2CR20 3-Phase Voltage Monitoring Relay.

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ManufacturerSiemens

Part number3UG4615-2CR20

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

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Same-day dispatch

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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 Spring-loaded terminal connections Separate contacts for Umin/Umax

Product description

The Siemens 3UG4615-2CR20 is a digital monitoring relay for 3-phase line voltage, offering protection against phase sequence errors, phase failure, undervoltage, and overvoltage. It operates within the 3x 160 to 690 V range at 50 to 60 Hz. This relay allows for adjustable hysteresis (1-20 V) and delay times (0-20 s) for both Umin and Umax monitoring. It features one change-over contact for Umin and another for Umax, utilizing spring-loaded terminals for quick and secure connections.

This relay is essential for protecting industrial equipment such as motors, pumps, and compressors from damage caused by abnormal voltage conditions or phase loss. The spring-loaded connection system facilitates efficient installation in demanding environments.

Stanlo Automation, a veteran-owned surplus industrial parts supplier, offers the Siemens 3UG4615-2CR20. Source this critical monitoring relay from us to ensure the reliable and safe operation of your 3-phase systems.

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	Spring-loaded

Common applications

Industrial machinery

Motor protection

Pump and fan controls

HVAC systems

Manufacturing automation

Critical power systems

Compatible systems

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

Also known as

Siemens 3UG4615 spring relay 3UG4615-2CR20 monitor Siemens 3-phase voltage protection spring

Replaces / compatible with

The preferred successor is the Siemens 3UG5616-2CR20. This relay monitors 3-phase line voltage, including undervoltage and overvoltage conditions, with spring-loaded terminals.

Technical note

Expert tip

This product is marked for phase-out. The recommended replacement is the Siemens 3UG5616-2CR20, which offers similar functionality with spring-loaded connections.

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Frequently asked questions

How does the Siemens 3UG4615-2CR20 monitor voltage in a 3-phase system?

The Siemens 3UG4615-2CR20 monitors 3-phase line voltage for both undervoltage and overvoltage conditions, allowing for specific hysteresis and delay settings for each. It also detects phase sequence and failure, utilizing spring-loaded terminals for connection.