• Siemens SIRIUS 3UG458 Insulation Monitoring Relays (IT Networks)
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Siemens SIRIUS 3UG458 Insulation Monitoring Relays (IT Networks)

Siemens SIRIUS 3UG458 Insulation Monitoring Relays (IT Networks)

SIRIUS 3UG458 insulation monitors measure insulation resistance between ungrounded AC/DC networks and the protective conductor.

Key features

  • For ungrounded (IT) AC networks and AC/DC networks
  • Adjustable response value 1-100 kOhm (3UG4583: 2 thresholds up to 200 kOhm)
  • System leakage capacitance up to 10 uF / 20 uF
  • Control supply voltage 24-240 V AC/DC
  • 3UG4983 voltage reducer extends 3UG4583 to 690 V AC / 1000 V DC
  • Screw or spring-loaded (push-in) terminals

Specifications

Brand Siemens
Product line SIRIUS 3UG45
Function Insulation monitoring
Supply 24 ... 240 V AC/DC
Mounting DIN rail, stand-alone
Source Siemens Catalog IC 10 · 2026, p. 1005
3UG4581-1AW31 Type: 3UG4581 insulation monitor | Network: 0-400 V AC | Response: 1 ... 100 kOhm | Contacts: 1 CO | Connection: Screw
3UG4581-2AW31 Type: 3UG4581 insulation monitor | Network: 0-400 V AC | Response: 1 ... 100 kOhm | Contacts: 1 CO | Connection: Spring-loaded (push-in)
3UG4582-1AW31 Type: 3UG4582 insulation monitor | Network: 0-250 V AC / 0-300 V DC | Response: 1 ... 100 kOhm | Contacts: 1 CO | Connection: Screw
3UG4582-2AW31 Type: 3UG4582 insulation monitor | Network: 0-250 V AC / 0-300 V DC | Response: 1 ... 100 kOhm | Contacts: 1 CO | Connection: Spring-loaded (push-in)
3UG4583-1CW31 Type: 3UG4583 insulation monitor | Network: 0-400 V AC / 0-600 V DC | Response: 1-100 / 2-200 kOhm | Contacts: 2 CO | Connection: Screw
3UG4583-2CW31 Type: 3UG4583 insulation monitor | Network: 0-400 V AC / 0-600 V DC | Response: 1-100 / 2-200 kOhm | Contacts: 2 CO | Connection: Spring-loaded (push-in)
3UG4983-1AA01 Type: Voltage reducer module (3UG4583) | Network: 0-690 V AC / 0-1000 V DC | Response: - | Contacts: - | Connection: Screw
3UG4983-2AA01 Type: Voltage reducer module (3UG4583) | Network: 0-690 V AC / 0-1000 V DC | Response: - | Contacts: - | Connection: Spring-loaded (push-in)
Monitoring RelaysSiemens
8 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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Siemens SIRIUS 3UG458 Insulation Monitoring Relays (IT Networks)

Brand Siemens·Monitoring Relays

Available part numbers (8)

3UG4581-1AW31, 3UG4581-2AW31, 3UG4582-1AW31, 3UG4582-2AW31, 3UG4583-1CW31, 3UG4583-2CW31, 3UG4983-1AA01, 3UG4983-2AA01

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Product codes & specifications
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Product codeSpec
3UG4581-1AW31Type: 3UG4581 insulation monitor | Network: 0-400 V AC | Response: 1 ... 100 kOhm | Contacts: 1 CO | Connection: Screw
3UG4581-2AW31Type: 3UG4581 insulation monitor | Network: 0-400 V AC | Response: 1 ... 100 kOhm | Contacts: 1 CO | Connection: Spring-loaded (push-in)
3UG4582-1AW31Type: 3UG4582 insulation monitor | Network: 0-250 V AC / 0-300 V DC | Response: 1 ... 100 kOhm | Contacts: 1 CO | Connection: Screw
3UG4582-2AW31Type: 3UG4582 insulation monitor | Network: 0-250 V AC / 0-300 V DC | Response: 1 ... 100 kOhm | Contacts: 1 CO | Connection: Spring-loaded (push-in)
3UG4583-1CW31Type: 3UG4583 insulation monitor | Network: 0-400 V AC / 0-600 V DC | Response: 1-100 / 2-200 kOhm | Contacts: 2 CO | Connection: Screw
3UG4583-2CW31Type: 3UG4583 insulation monitor | Network: 0-400 V AC / 0-600 V DC | Response: 1-100 / 2-200 kOhm | Contacts: 2 CO | Connection: Spring-loaded (push-in)
3UG4983-1AA01Type: Voltage reducer module (3UG4583) | Network: 0-690 V AC / 0-1000 V DC | Response: - | Contacts: - | Connection: Screw
3UG4983-2AA01Type: Voltage reducer module (3UG4583) | Network: 0-690 V AC / 0-1000 V DC | Response: - | Contacts: - | Connection: Spring-loaded (push-in)

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