The Siemens 3UG5616-1CR20 is a digitally adjustable monitoring relay designed for comprehensive three-phase electrical system monitoring. It monitors critical parameters including phase failure, phase sequence, phase asymmetry, frequency, overvoltage, and undervoltage, helping protect electrical equipment and motors against abnormal supply conditions.
With a monitoring range of 3 × 90–690 V AC and a frequency range of 15–70 Hz, this Siemens monitoring relay is suitable for a wide range of industrial electrical systems. Its digital adjustment provides flexible monitoring settings, while 2 changeover contacts allow reliable signaling and integration into control circuits.
The 3UG5616-1CR20 uses screw terminal connections and is suitable for industrial control panels, motor protection systems, automation equipment, pumps, compressors, machinery, and other applications where reliable three-phase voltage monitoring is required.
Siemens 3UG5616-1CR20 digital monitoring relay
Digital adjustment for flexible monitoring configuration
Phase failure monitoring
Phase sequence monitoring
Phase asymmetry monitoring
Frequency monitoring
Overvoltage monitoring
Undervoltage monitoring
Three-phase monitoring: 3 × 90–690 V AC
Frequency range: 15–70 Hz
2 changeover contacts
Screw terminal connection
Suitable for industrial electrical protection and automation
The Siemens 3UG5616-1CR20 monitoring relay is suitable for:
Three-phase motor protection
Motor control panels
Industrial automation systems
Pump and compressor systems
Machine protection
Industrial machinery
Electrical control cabinets
Motor control centers
HVAC equipment
Conveyor and material-handling systems
OEM control panels
The Siemens digital monitoring relay provides comprehensive monitoring of three-phase electrical supply conditions from a single device. Detecting phase failure, incorrect phase sequence, phase asymmetry, frequency deviations, overvoltage, and undervoltage helps reduce the risk of motor malfunction and equipment damage.
Its broad 90–690 V AC monitoring range makes the relay suitable for different industrial voltage systems. Digital adjustment also allows monitoring parameters to be configured according to the requirements of the application.
The 2 changeover contacts provide flexible signaling and control possibilities for integrating the relay into contactor circuits, alarms, PLC systems, and industrial automation applications.
SB Smart supplies genuine Siemens monitoring relays, SIRIUS control products, motor protection devices, contactors, and industrial automation components for panel builders, OEMs, electrical contractors, system integrators, and industrial customers.
The Siemens 3UG5616-1CR20 can be sourced through SB Smart with product assistance, availability information, and quotation support.
What is Siemens 3UG5616-1CR20?
The Siemens 3UG5616-1CR20 is a digitally adjustable three-phase monitoring relay designed to monitor phase failure, phase sequence, asymmetry, frequency, overvoltage, and undervoltage.
What voltage range does Siemens 3UG5616-1CR20 monitor?
The relay is designed for three-phase monitoring from 3 × 90–690 V AC.
What frequency range can the relay monitor?
The specified frequency range is 15–70 Hz.
What electrical faults can this Siemens monitoring relay detect?
It can monitor conditions including phase failure, incorrect phase sequence, phase asymmetry, overvoltage, undervoltage, and frequency deviations.
How many changeover contacts does 3UG5616-1CR20 have?
The relay has 2 changeover contacts with screw terminal connections.
Where can Siemens 3UG5616-1CR20 be used?
It is suitable for industrial motor protection, pumps, compressors, machinery, control panels, automation systems, and three-phase electrical equipment.
Why use a phase monitoring relay?
A phase monitoring relay helps identify abnormal three-phase supply conditions before they can cause motor malfunction, unwanted operation, overheating, or equipment damage.
Where can I buy Siemens 3UG5616-1CR20?
You can contact SB Smart for pricing, availability, and quotation assistance for the Siemens 3UG5616-1CR20 digital monitoring relay.
• High reliability for critical industrial applications
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3UG5 |
| Model Number | 3UG5616-1CR20 |
| Product Type | Phase & Voltage Monitoring Relay |
| Function | Phase sequence + phase failure + voltage monitoring |
| Voltage Range | 90 – 690 V AC (3-phase) |
| Frequency Range | 15 – 70 Hz |
| Monitored Conditions | Phase loss, phase sequence, imbalance, over/under voltage |
| Output Contacts | 2 changeover contacts (DPDT) |
| Mounting Type | DIN rail (22.5 mm) |
| Display | LCD digital interface |
| Application | Motor protection / power network monitoring |
| Brand | Siemens |
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