• Siemens SIRIUS 3UG5 Line Monitoring Relays (3-Phase, Phase Sequence)
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Siemens SIRIUS 3UG5 Line Monitoring Relays (3-Phase, Phase Sequence)

Siemens SIRIUS 3UG5 Line Monitoring Relays (3-Phase, Phase Sequence)

SIRIUS 3UG5 line monitoring relays for 3-phase networks, monitoring phase sequence, phase failure, asymmetry, voltage and frequency.

Key features

  • Fixed-function phase sequence and phase failure/asymmetry relays without settings
  • Analog adjustable 3UG5514 with undervoltage monitoring and ON-delay 0.1-20 s
  • Digital 3UG5616/3UG5618 with N-conductor, frequency, under- and overvoltage monitoring
  • Versions with Bluetooth (3UG5716) and for IO-Link (3UG5816)
  • 3UG5618 automatically corrects direction of rotation on wrong phase sequence
  • Safety-application versions (-..21) and screw or push-in terminals

Specifications

Brand Siemens
Product line SIRIUS 3UG5
Function 3-phase line monitoring
Mounting DIN rail, stand-alone
Digital ON-delay 0.1 ... 30 s (start / limit violation)
Accessories See siemens-sirius-monitoring-relay-enclosure-accessories
Source Siemens Catalog IC 10 · 2026, p. 972
3UG5511-1AR20 Monitoring: Phase sequence | Setting: Fixed | Contacts: 1 CO | Version: - | Connection: Screw
3UG5511-2AR20 Monitoring: Phase sequence | Setting: Fixed | Contacts: 1 CO | Version: - | Connection: Spring-loaded (push-in)
3UG5511-1BR20 Monitoring: Phase sequence | Setting: Fixed | Contacts: 2 CO | Version: - | Connection: Screw
3UG5511-2BR20 Monitoring: Phase sequence | Setting: Fixed | Contacts: 2 CO | Version: - | Connection: Spring-loaded (push-in)
3UG5512-1AR20 Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 1 CO | Version: - | Connection: Screw
3UG5512-2AR20 Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 1 CO | Version: - | Connection: Spring-loaded (push-in)
3UG5512-1BR20 Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 2 CO | Version: - | Connection: Screw
3UG5512-2BR20 Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 2 CO | Version: - | Connection: Spring-loaded (push-in)
3UG5512-1AR21 Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 1 CO | Version: Safety applications | Connection: Screw
3UG5512-2AR21 Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 1 CO | Version: Safety applications | Connection: Spring-loaded (push-in)
3UG5512-1BR21 Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 2 CO | Version: Safety applications | Connection: Screw
3UG5512-2BR21 Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 2 CO | Version: Safety applications | Connection: Spring-loaded (push-in)
3UG5514-1BR20 Monitoring: Seq./failure/asym./undervoltage | Setting: Analog | Contacts: 2 CO | Version: - | Connection: Screw
3UG5616-1CR20 Monitoring: Seq./fail./asym./N/f/U<> | Setting: Digital | Contacts: 2 CO | Version: - | Connection: Screw
3UG5616-2CR20 Monitoring: Seq./fail./asym./N/f/U<> | Setting: Digital | Contacts: 2 CO | Version: - | Connection: Spring-loaded (push-in)
3UG5716-1CR20 Monitoring: Seq./fail./asym./N/f/U<> | Setting: Digital | Contacts: 2 CO | Version: With Bluetooth | Connection: Screw
3UG5716-2CR20 Monitoring: Seq./fail./asym./N/f/U<> | Setting: Digital | Contacts: 2 CO | Version: With Bluetooth | Connection: Spring-loaded (push-in)
3UG5816-1AA40 Monitoring: Seq./fail./asym./N/f/U<> | Setting: Digital | Contacts: 1 CO | Version: IO-Link | Connection: Screw
3UG5816-2AA40 Monitoring: Seq./fail./asym./N/f/U<> | Setting: Digital | Contacts: 1 CO | Version: IO-Link | Connection: Spring-loaded (push-in)
3UG5618-1CR20 Monitoring: Auto rotation corr. + U/f/asym. | Setting: Digital | Contacts: 2 CO | Version: - | Connection: Screw
3UG5618-2CR20 Monitoring: Auto rotation corr. + U/f/asym. | Setting: Digital | Contacts: 2 CO | Version: - | Connection: Spring-loaded (push-in)
3UG5618-1CR21 Monitoring: Auto rotation corr. + U/f/asym. | Setting: Digital | Contacts: 2 CO | Version: Safety applications | Connection: Screw
3UG5618-2CR21 Monitoring: Auto rotation corr. + U/f/asym. | Setting: Digital | Contacts: 2 CO | Version: Safety applications | Connection: Spring-loaded (push-in)
3UG5514-2BR20 Monitoring: Seq./failure/asym./undervoltage | Setting: Analog | Contacts: 2 CO | Version: - | Connection: Spring-loaded (push-in)
Monitoring RelaysSiemens
24 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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Siemens SIRIUS 3UG5 Line Monitoring Relays (3-Phase, Phase Sequence)

Brand Siemens·Monitoring Relays

Available part numbers (24)

3UG5511-1AR20, 3UG5511-2AR20, 3UG5511-1BR20, 3UG5511-2BR20, 3UG5512-1AR20, 3UG5512-2AR20, 3UG5512-1BR20, 3UG5512-2BR20, 3UG5512-1AR21, 3UG5512-2AR21 + 14 more — see full table ↓

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Product codes & specifications
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Product codeSpec
3UG5511-1AR20Monitoring: Phase sequence | Setting: Fixed | Contacts: 1 CO | Version: - | Connection: Screw
3UG5511-2AR20Monitoring: Phase sequence | Setting: Fixed | Contacts: 1 CO | Version: - | Connection: Spring-loaded (push-in)
3UG5511-1BR20Monitoring: Phase sequence | Setting: Fixed | Contacts: 2 CO | Version: - | Connection: Screw
3UG5511-2BR20Monitoring: Phase sequence | Setting: Fixed | Contacts: 2 CO | Version: - | Connection: Spring-loaded (push-in)
3UG5512-1AR20Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 1 CO | Version: - | Connection: Screw
3UG5512-2AR20Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 1 CO | Version: - | Connection: Spring-loaded (push-in)
3UG5512-1BR20Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 2 CO | Version: - | Connection: Screw
3UG5512-2BR20Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 2 CO | Version: - | Connection: Spring-loaded (push-in)
3UG5512-1AR21Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 1 CO | Version: Safety applications | Connection: Screw
3UG5512-2AR21Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 1 CO | Version: Safety applications | Connection: Spring-loaded (push-in)
3UG5512-1BR21Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 2 CO | Version: Safety applications | Connection: Screw
3UG5512-2BR21Monitoring: Seq./failure/asymmetry | Setting: Fixed | Contacts: 2 CO | Version: Safety applications | Connection: Spring-loaded (push-in)
3UG5514-1BR20Monitoring: Seq./failure/asym./undervoltage | Setting: Analog | Contacts: 2 CO | Version: - | Connection: Screw
3UG5616-1CR20Monitoring: Seq./fail./asym./N/f/U<> | Setting: Digital | Contacts: 2 CO | Version: - | Connection: Screw
3UG5616-2CR20Monitoring: Seq./fail./asym./N/f/U<> | Setting: Digital | Contacts: 2 CO | Version: - | Connection: Spring-loaded (push-in)
3UG5716-1CR20Monitoring: Seq./fail./asym./N/f/U<> | Setting: Digital | Contacts: 2 CO | Version: With Bluetooth | Connection: Screw
3UG5716-2CR20Monitoring: Seq./fail./asym./N/f/U<> | Setting: Digital | Contacts: 2 CO | Version: With Bluetooth | Connection: Spring-loaded (push-in)
3UG5816-1AA40Monitoring: Seq./fail./asym./N/f/U<> | Setting: Digital | Contacts: 1 CO | Version: IO-Link | Connection: Screw
3UG5816-2AA40Monitoring: Seq./fail./asym./N/f/U<> | Setting: Digital | Contacts: 1 CO | Version: IO-Link | Connection: Spring-loaded (push-in)
3UG5618-1CR20Monitoring: Auto rotation corr. + U/f/asym. | Setting: Digital | Contacts: 2 CO | Version: - | Connection: Screw
3UG5618-2CR20Monitoring: Auto rotation corr. + U/f/asym. | Setting: Digital | Contacts: 2 CO | Version: - | Connection: Spring-loaded (push-in)
3UG5618-1CR21Monitoring: Auto rotation corr. + U/f/asym. | Setting: Digital | Contacts: 2 CO | Version: Safety applications | Connection: Screw
3UG5618-2CR21Monitoring: Auto rotation corr. + U/f/asym. | Setting: Digital | Contacts: 2 CO | Version: Safety applications | Connection: Spring-loaded (push-in)
3UG5514-2BR20Monitoring: Seq./failure/asym./undervoltage | Setting: Analog | Contacts: 2 CO | Version: - | Connection: Spring-loaded (push-in)

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