3UG4616-1CR20

The Siemens SIRIUS 3UG4616-1CR20 three-phase voltage monitoring relay supports neutral line connection and reversible phase sequence unaffected by wiring order. It features screw terminals with two sets of conversion contacts and is suitable for replacing the older 3UG3042-1BP50 model.

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Siemens SIRIUS 3UG4616-1CR20 Three-Phase Voltage Monitoring Station Product Image

Product Positioning

The 3UG4616-1CR20 is a Siemens SIRIUS three-phase voltage monitoring relay that supports neutral connection and reversible phase sequence design, and can be used as a replacement for the older model 3UG3042-1BP50.

Core Product Advantages and Features

Reversible phase sequence design

It can operate normally regardless of the phase sequence and wiring direction, reducing the risk of downtime caused by wiring errors in the field.

Supports neutral (N) connection method

It can measure a voltage range of 90 to 400V based on the neutral line and is suitable for three-phase four-wire power supply systems.

Screw terminal double conversion contact

It adopts a screw terminal design and provides two sets of conversion contacts corresponding to Umin and Umax action outputs respectively.

Replacement for older models

It can directly replace the 3UG3042-1BP50 model, making it easy to upgrade and replace existing equipment.

project	Specification
Model (MLFB)	3UG4616-1CR20
Monitoring function	Reversible phase sequence, phase loss detection, over/under voltage
Voltage measurement range	3x160~690V AC (90~400V to neutral), 50/60Hz
Output contacts	Two sets of switching contacts (one set each for Umin and Umax).
Contact Rating	1W (Umin), 1W (Umax)
Terminal type	Screw terminals
Action delay time	Adjustable from 0 to 20 seconds (Umin, Umax)
Installation dimensions	22.5 x 102 x 91 mm
Applicable replacement models	3UG3042-1BP50

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