RS Better World

Siemens Monitoring Relay, 3 Phase, DPDT, DIN Rail, 5mA to 5A

Sous-total (1 unité)*

340,37 €

(TVA exclue)

411,85 €

(TVA incluse)

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N° de stock RS:
149-166
Référence fabricant:
3UG5618-1CR20
Fabricant:
Siemens
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Marque

Siemens

Product Type

Monitoring Relay

Electrical Phase

3

Contact Configuration

DPDT

Mount Type

DIN Rail

Minimum Current Sensed

5mA

Power Consumption

2W

Maximum Current Sensed

5A

Current Sensitivity

Overvoltage, Undervoltage

Terminal Type

Screw

IP Rating

IP20

Time Delay

0.1 to 30 s

Relay Contact Current

3A

Minimum Operating Temperature

-25°C

Maximum Operating Temperature

60°C

Standards/Approvals

RoHS, EAC, UL, CCC, IEC 60664

Length

90mm

Series

3UG5

Width

22.5mm

Height

100mm

Better World Product

Yes

Better World Claim

Concentrated or Compact Solution

Pays d'origine :
DE

Siemens 3UG5 Series Monitoring Relay, 120 to 400V Supply AC Voltage, 0.1 to 30 s Time Delay - 3UG5618-1CR20


This monitoring relay is a Compact DIN-rail device for three-phase line surveillance, providing automatic correction of rotation direction and detection of phase failure, sequence and asymmetry in industrial control systems. It monitors frequency Plus three-phase overvoltage and undervoltage windows and can operate with or without a NEUTRAL conductor, making it suitable for motor protection and network supervision across a wide AC voltage range.

Features & Benefits


• Measures three-phase voltages 90–760 V to protect equipment from supply faults
• Detects overvoltage and undervoltage across three phases for system stability
• Auto-corrects phase sequence to maintain correct motor rotation direction
• Adjustable response and OFF-delay 0.1–30 s to prevent nuisance tripping
• Two changeover contacts provide switching at up to 3A for control circuits
• Galvanic isolation between inputs and outputs to reduce interference risk

**Applications**


• Suitable for motor protection in conveyor and pump control panels
• Ideal for monitoring incoming supply to distribution boards
• Used for frequency-sensitive equipment protection in production lines
• Can be used for phase-sequence supervision in three-phase inverter systems

What supply voltage range can the unit monitor for control supply?


It accepts an AC control supply across a broad band from 120 to 690 V at both 50Hz and 60Hz with defined operating range factors.

How does it cope with brief mains interruptions?


The device provides a minimum buffering time of 20ms to ride through short power disturbances before signalling a fault.

What connection types and conductor sizes are supported?


Screw terminals accept solid or stranded conductors from 0.5 to 4 mm² with a stripped length of 10 mm and a recommended tightening torque of 0.6–0.8 N·m.

What mechanical and electrical endurance can be expected from the switching elements?


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

What environmental limits apply during normal operation?


It is rated for operation from −25°C to +60°C, with a maximum installation altitude of 2000m and relative humidity up to 70%.

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