RS Better World
Siemens Monitoring Relay, 3 Phase, DPDT, DIN Rail, 5mA to 5A, 200V ac, 690 V ac
- RS Stock No.:
- 149-151
- Distrelec Article No.:
- 304-21-292
- Mfr. Part No.:
- 3UG5512-1BR20
- Brand:
- Siemens
Subtotal (1 unit)*
Kr. 2 045,13
(exc. VAT)
Kr. 2 556,41
(inc. VAT)
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In Stock
- Plus 7 unit(s) shipping from 15 June 2026
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Units | Per unit |
|---|---|
| 1 + | Kr. 2 045,13 |
*price indicative
Our Better World range features products that make it easy for you to make a greener product choice you can trust.
- RS Stock No.:
- 149-151
- Distrelec Article No.:
- 304-21-292
- Mfr. Part No.:
- 3UG5512-1BR20
- Brand:
- Siemens
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Siemens | |
| Product Type | Monitoring Relay | |
| Electrical Phase | 3 | |
| Contact Configuration | DPDT | |
| Mount Type | DIN Rail | |
| Minimum Current Sensed | 5mA | |
| Maximum Current Sensed | 5A | |
| Power Consumption | 1.8W | |
| Terminal Type | Screw | |
| Time Delay | 20 ms | |
| IP Rating | IP20 | |
| Relay Contact Current | 3A | |
| Minimum Operating Temperature | -25°C | |
| Supply AC Voltage | 200, 690V ac | |
| Maximum Operating Temperature | 60°C | |
| Width | 22.5mm | |
| Standards/Approvals | IEC 60529 2, CCC, EAC, CE, RoHS | |
| Length | 90mm | |
| Height | 100mm | |
| Series | 3UG5 | |
| Better World Claim | Concentrated or Compact Solution | |
| Better World Product | Yes | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Product Type Monitoring Relay | ||
Electrical Phase 3 | ||
Contact Configuration DPDT | ||
Mount Type DIN Rail | ||
Minimum Current Sensed 5mA | ||
Maximum Current Sensed 5A | ||
Power Consumption 1.8W | ||
Terminal Type Screw | ||
Time Delay 20 ms | ||
IP Rating IP20 | ||
Relay Contact Current 3A | ||
Minimum Operating Temperature -25°C | ||
Supply AC Voltage 200, 690V ac | ||
Maximum Operating Temperature 60°C | ||
Width 22.5mm | ||
Standards/Approvals IEC 60529 2, CCC, EAC, CE, RoHS | ||
Length 90mm | ||
Height 100mm | ||
Series 3UG5 | ||
Better World Claim Concentrated or Compact Solution | ||
Better World Product Yes | ||
- COO (Country of Origin):
- DE
Siemens 3UG5 Series Monitoring Relay, 5A Maximum Current Sensed, 200/690V AC Supply AC Voltage - 3UG5512-1BR20
This monitoring relay provides continuous supervision of three-phase supplies to detect phase sequence irregularities, phase loss and voltage asymmetry in industrial control installations. Designed for panel mounting on a 35mm DIN rail, it monitors AC supply voltages across a wide frequency range and offers LED indication for status, making it suitable for automated and electrical systems where phase integrity is required.
Features & Benefits
• Detects phase sequence and failure enabling Rapid fault identification
• Monitors asymmetry with indirect voltage-limit checking protecting motors
• Supply range 200–690 V AC supporting varied industrial networks
• DPDT output contacts rated 3A delivering robust switching capability
• Response buffering 20ms to maintain monitoring during brief interruptions
• Thermal operating range −25 to +60 °C allowing broad environmental use
• Monitors asymmetry with indirect voltage-limit checking protecting motors
• Supply range 200–690 V AC supporting varied industrial networks
• DPDT output contacts rated 3A delivering robust switching capability
• Response buffering 20ms to maintain monitoring during brief interruptions
• Thermal operating range −25 to +60 °C allowing broad environmental use
**Applications**
• Suitable for protecting three-phase motors from phase loss and reversal
• Ideal for integration in motor control centres and distribution panels
• Used for supervising three-phase supply integrity in automation systems
• Can be used for preventative maintenance monitoring of plant power supplies
• Ideal for integration in motor control centres and distribution panels
• Used for supervising three-phase supply integrity in automation systems
• Can be used for preventative maintenance monitoring of plant power supplies
What contact material and configuration are provided for switching?
The outputs use AgSnO2 contacts in a double-throw arrangement with two changeover contacts for auxiliary switching needs.
How should conductors be terminated to ensure secure connections?
Screw terminals accept solid or finely stranded conductors from 0.5 to 4 mm² and require a stripped length of 10mm with 0.6 to 0.8 N·m tightening torque.
What electrical isolation is present between circuits?
There is galvanic separation between input and output circuits as well as between the outputs and the supply, ensuring segregated signal paths.
How does it perform under electromagnetic disturbance?
It meets EMC criteria with immunity to bursts, surges and ESD at levels specified for industrial environments and complies with IEC interference standards.
Are there any short-circuit protection recommendations for the relay outputs?
Use gL/gG fuses rated 6 A or an MCB type C rated 1A for protecting both normally open and normally closed relay contacts.
Related links
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