The Siemens 3UG4615-1CR20 is a digital monitoring relay for three-phase lines, designed to monitor phase failure and phase sequence in industrial electrical systems. It helps identify incorrect phase rotation and missing-phase conditions, supporting reliable operation and protection of motors and three-phase equipment.
With a monitoring range of 3 × 160–690 V AC, this Siemens monitoring relay is suitable for a broad range of industrial three-phase power systems. Its digital monitoring functionality provides reliable detection of abnormal phase conditions, while the screw terminal connection supports convenient installation in electrical control panels.
The 3UG4615-1CR20 is also associated with the Siemens 3UG5616-1CR20 successor series, making it a useful option when selecting compatible monitoring solutions for existing Siemens three-phase monitoring applications.
Siemens 3UG4615-1CR20 digital monitoring relay
Designed for three-phase line monitoring
Phase failure monitoring
Phase sequence monitoring
Monitoring voltage: 3 × 160–690 V AC
Digital monitoring technology
Screw terminal connection
Suitable for industrial motor and line monitoring
Helps identify missing-phase conditions
Helps detect incorrect phase sequence
Suitable for control panels and automation systems
The Siemens 3UG4615-1CR20 monitoring relay is suitable for:
Three-phase motor protection
Phase failure monitoring
Phase sequence monitoring
Industrial control panels
Motor control centers
Pump and compressor systems
Industrial machinery
Electrical automation systems
OEM control panels
Three-phase power supply monitoring
The Siemens phase monitoring relay helps protect three-phase motors and electrical equipment by detecting phase failure and incorrect phase sequence. Identifying these conditions early can help reduce the risk of motor overheating, incorrect rotation, process disruption, and equipment damage.
Its broad 3 × 160–690 V AC monitoring range makes it suitable for various industrial three-phase supply systems. The digital monitoring design also provides a practical solution for integrating electrical supply monitoring into modern control panels.
The Siemens 3UG4615-1CR20 has the 3UG5616-1CR20 identified as its successor for the corresponding three-phase monitoring application.
When replacing an existing 3UG4615 installation, users should verify the complete electrical, mounting, wiring, and functional requirements before selecting the successor device.
SB Smart supplies genuine Siemens monitoring relays, SIRIUS control components, motor protection devices, contactors, and industrial automation products for panel builders, OEMs, electrical contractors, system integrators, and industrial customers.
The Siemens 3UG4615-1CR20 can be sourced through SB Smart with product assistance, availability information, and quotation support.
What is Siemens 3UG4615-1CR20?
The Siemens 3UG4615-1CR20 is a digital monitoring relay designed for monitoring phase failure and phase sequence on three-phase electrical lines.
What voltage range does 3UG4615-1CR20 monitor?
The specified monitoring range is 3 × 160–690 V AC.
What does phase failure monitoring do?
Phase failure monitoring detects when one phase of a three-phase supply is missing, helping protect motors and electrical equipment from potentially damaging operating conditions.
What is phase sequence monitoring?
Phase sequence monitoring detects incorrect phase rotation, helping prevent three-phase motors from running in the wrong direction.
What is the successor to Siemens 3UG4615-1CR20?
The Siemens 3UG5616-1CR20 is identified as the successor for this monitoring application.
Where can Siemens 3UG4615-1CR20 be used?
It can be used in industrial control panels, motor protection systems, pumps, compressors, machinery, automation systems, and three-phase electrical installations.
Where can I buy Siemens 3UG4615-1CR20?
You can contact SB Smart for pricing, availability, and quotation assistance for the Siemens 3UG4615-1CR20 digital monitoring relay.
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3UG4 |
| Model Number | 3UG4615-1CR20 |
| Product Type | Phase Failure Monitoring Relay |
| Function | Phase monitoring + voltage supervision |
| Voltage Range | 160 – 690 V AC (3-phase) |
| Monitored Conditions | Phase loss, phase sequence, imbalance, over/under voltage |
| Time Delay | 0 – 20 sec adjustable |
| Output Contact | 2 changeover contacts (DPDT) |
| Mounting Type | DIN rail |
| Application | Motor protection / Industrial power monitoring |
| Brand | Siemens |
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