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Siemens Monitoring Relay, 3 Phase, DPDT, DIN Rail, 120V ac, 690 V ac

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£200.16

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£240.19

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RS Stock No.:
149-163
Mfr. Part No.:
3UG5616-1CR20
Brand:
Siemens
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Brand

Siemens

Product Type

Monitoring Relay

Electrical Phase

3

Contact Configuration

DPDT

Mount Type

DIN Rail

Terminal Type

Screw

IP Rating

IP20

Time Delay

0.1 to 30 s

Minimum Operating Temperature

-25°C

Supply AC Voltage

120, 690V ac

Maximum Operating Temperature

60°C

Series

3UG5

Width

22.5mm

Standards/Approvals

UL, IEC 60664, RoHS, EAC, CCC

Height

100mm

Length

90mm

Better World Product

Yes

Better World Claim

Concentrated or Compact Solution

COO (Country of Origin):
DE

Siemens 3UG5 Series Monitoring Relay, 120 to 400V Supply AC Voltage, 0.1 to 30s Time Delay - 3UG5616-1CR20


This monitoring relay is a digitally adjustable network monitor designed for line supervision in three-phase AC installations. It checks phase sequence, phase loss, asymmetry, frequency and both over- and undervoltage within industrial supply networks, and provides relay switching to protect downstream equipment in control panels mounted on a 35mm DIN rail.

Features & Benefits


• 0.1–30 s adjustable response delay for tailored start-up protection
• Monitors 3 x 90–690 V AC and 15–70 Hz for wide voltage/frequency ranges
• Two changeover contacts delivering 3A switching for control circuits
• Auto-reset and adjustable N-conductor recognition for flexible operation
• Detects phase asymmetry and phase failure to prevent motor stress
• Screw terminals accepting up to 4 mm² conductors for secure connections

Applications


• Suitable for monitoring supply integrity to three-phase motors
• Ideal for integration into machine control panels on DIN rails
• Used for protective supervision of distribution boards and feeders
• Can be used for frequency-sensitive equipment protection
• Suitable for installations requiring adjustable voltage window detection

What input supply voltages will operate the device?


It accepts AC control supply from 120–690 V across 50/60 Hz with an operating range factor from 0.85 to 1.1.

How precise is the voltage and timing measurement?


Relative metering precision is 3% with a digital-display accuracy of ±1 digit and temperature drift of 0.001%/°C.

What isolation and surge resilience does it provide?


The unit offers galvanic isolation between inputs and outputs and surge resistance up to 6kV, with conductor-to-conductor surge rating to 1kV.

What are the expected mechanical and electrical lifetimes?


Typical mechanical life is 10 million cycles and electrical endurance around 100,000 cycles at AC-15/230 V.

How should short-circuit protection be arranged for the relay contacts?


Use gL/gG fuses rated 6 A or an MCB type C at 1 A for protecting both NO and NC contact circuits.

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