Siemens SIRIUS Phase Failure and Sequence Monitoring Relay – 3UG4616-1CR20
The Siemens
3UG4616-1CR20 is a high-performance SIRIUS digital monitoring relay designed
for reliable monitoring of three-phase power systems with neutral conductor
connection. It provides advanced protection against phase failure, incorrect
phase sequence, undervoltage, overvoltage, and voltage asymmetry, helping
safeguard motors, compressors, pumps, HVAC systems, and industrial machinery
from electrical faults and operational damage.
This compact
DIN rail mounted relay supports monitoring for 3-phase voltage systems from
160–690 V AC and features adjustable hysteresis, configurable delay times, and
dual changeover relay outputs for dependable fault signaling and protection
control. The device is ideal for industrial automation, switchgear panels,
motor control centers, and critical power monitoring applications.
Key Features
·
Digital phase
monitoring relay
·
Detects phase
failure and phase sequence errors
·
Overvoltage
and undervoltage monitoring
·
Voltage
asymmetry monitoring
·
Adjustable
hysteresis settings
·
Adjustable
delay time from 0–20 seconds
·
2 changeover
relay contacts
·
DIN rail
mounting design
·
Screw
terminal connections
·
LED status
indication
·
Compact
industrial housing
Suitable for industrial automation systems
Technical Specifications
Parameter | Specification |
Product Model | 3UG4616-1CR20 |
Brand | Siemens |
Product Series | SIRIUS 3UG4 |
Product Type | Digital Phase Monitoring Relay |
Monitoring Functions | Phase Failure, Phase Sequence, Overvoltage, Undervoltage, Asymmetry |
System Type | 3-Phase with Neutral Conductor |
Measuring Voltage Range | 3 × 160–690 V AC |
Operating Frequency | 50–60 Hz |
Hysteresis Range | 1–20 V Adjustable |
Time Delay | Adjustable 0–20 s |
Output Contacts | 2 Changeover Contacts (DPDT) |
Contact Rating | 250 V AC / 3 A |
Mounting Type | DIN Rail Mounting |
Connection Type | Screw Terminal |
Protection Class | IP20 |
Dimensions | 22.5 × 102 × 91 mm |
Operating Temperature | -20°C to +65°C |
Voltage Type | AC |
Housing Width | 22.5 mm |
Standards | IEC / CE / UL |
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