Product Description

Siemens SIRIUS Digital Current Monitoring Relay, 1-Phase 2-Wire / 3-Phase 3-Wire / 4-Wire, 110V AC, 1 CO, 35 mm - 7UG0831-1AB20

Product Description

The Siemens 7UG0831-1AB20 is a SIRIUS digital current monitoring relay designed for monitoring electrical current in 1-phase 2-wire, 3-phase 3-wire and 3-phase 4-wire systems. It features a 110 V AC control supply, 1 changeover (1 CO) relay output, and a compact 35 mm module width, making it suitable for installation in industrial electrical control panels and automation systems.

The relay is designed for applications requiring continuous monitoring of AC current. The 7UG0831-1AB20 can be used with an external current transformer for measuring higher primary currents, making it suitable for motor current monitoring, machine protection, industrial automation, electrical distribution and control-panel applications. Siemens specifies a current measuring range of up to approximately 1.19 kA RMS, depending on the selected external CT and configuration.

Its compact 35 mm design helps save valuable control-panel space while the 1 CO relay output can be integrated into alarm, contactor-control or automation circuits. The device is part of the Siemens SIRIUS 7UG range of monitoring relays.

Key Features

• Brand: Siemens

• Product Family: SIRIUS 7UG

• Part Number: 7UG0831-1AB20

• Product Type: Digital Current Monitoring Relay

• Monitoring Function: AC Current Monitoring

• System Compatibility: 1-Phase 2-Wire

• System Compatibility: 3-Phase 3-Wire

• System Compatibility: 3-Phase 4-Wire

• Control Supply: 110 V AC

• Output: 1 CO

• Contact Configuration: 1 Changeover Contact

• Module Width: 35 mm

• Rated Frequency: 50/60 Hz

• Current Measuring Range: Up to approx. 1.19 kA RMS with external CT

• Current Input: External Current Transformer

• Application: Digital Current Monitoring

• Installation: Electrical Control Panels

• Product Series: Siemens SIRIUS 7UG Monitoring Relays

Applications

The Siemens 7UG0831-1AB20 current monitoring relay is suitable for:

• AC current monitoring

• Motor current monitoring

• Industrial automation

• Motor control panels

• Electrical control panels

• Machine monitoring

• Pump control systems

• Fan monitoring systems

• Compressor applications

• Industrial machinery

• Power distribution systems

• Electrical feeders

• Factory automation

• Control cabinets

• Equipment monitoring

• Preventive maintenance systems

• Alarm and control circuits

• Industrial electrical systems

Benefits

• Digital monitoring of AC current

• Supports 1-phase 2-wire applications

• Supports 3-phase 3-wire applications

• Supports 3-phase 4-wire applications

• 110 V AC control supply

• Compact 35 mm module

• 1 changeover relay output

• Supports external CT-based current measurement

• Suitable for higher current monitoring applications

• Helps identify abnormal current conditions

• Suitable for motor and machine monitoring

• Useful for alarm and control functions

• Space-saving panel installation

• Suitable for industrial automation systems

• Genuine Siemens SIRIUS monitoring solution

High-Level SEO Keywords

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Frequently Asked Questions

Q1. What is Siemens 7UG0831-1AB20?
The 7UG0831-1AB20 is a Siemens SIRIUS digital current monitoring relay used for monitoring AC current in electrical systems.

Q2. Which electrical systems does it support?
It supports 1-phase 2-wire, 3-phase 3-wire and 3-phase 4-wire configurations.

Q3. What is the control supply voltage?
The relay uses a 110 V AC control supply.

Q4. How many output contacts are available?
The device provides 1 changeover contact (1 CO).

Q5. What is the module width?
The Siemens 7UG0831-1AB20 has a compact 35 mm module width.

Q6. Can it monitor three-phase current?
Yes. It supports both 3-phase 3-wire and 3-phase 4-wire systems.

Q7. Can it be used for single-phase current monitoring?
Yes. The relay supports 1-phase 2-wire applications.

Q8. Can an external current transformer be used?
Yes. The current monitoring relay is designed for current measurement using an external CT, allowing higher primary currents to be monitored.

Q9. Where is Siemens 7UG0831-1AB20 commonly used?
It can be used in motor control panels, industrial automation systems, machine control panels, electrical distribution systems, pumps, fans, compressors and industrial equipment.

Q10. Is 7UG0831-1AB20 a circuit breaker?
No. It is a digital current monitoring relay. It monitors current and provides a relay output for external alarm, control or protection circuits.