The Siemens 3UG4512-2BR20 SIRIUS monitoring relay checks phase failure and phase sequence in three-phase AC systems. This model has two changeover contacts and a spring-loaded connection system.
Manufacturer model data
- Order number: 3UG4512-2BR20.
- Series: SIRIUS.
- Monitoring functions: phase failure and phase sequence.
- Monitored voltage range: 3 × 160–690 V AC.
- Frequency: 50/60 Hz.
- Output contacts: two changeover contacts.
- Connection: spring-loaded terminals.
Compare the complete Siemens order number, terminal arrangement and output-contact requirements with your existing relay. Refer to the Siemens 3UG4512-2BR20 product reference. If you need a replacement model, include the existing relay label and application details in your inquiry.
Request a quote
Specify 3UG4512-2BR20, quantity and any required matching terminal or mounting details. Availability, condition, testing status, included accessories, lead time and final pricing are confirmed with your quote. Request pricing and availability.
Related equipment
Browse Siemens automation parts and industrial parts and equipment.
Shipping & warranty
Free standard shipping on orders over $100 within the contiguous United States. Orders of $100 or less have shipping charges. Expedited and overnight delivery cost extra. Shipping outside the contiguous United States is quoted separately. See our shipping policy.
1 Year warranty. See our warranty policy for coverage.
Product information & disclaimer
Images are representative and may show a product family. The exact model, revision, accessories and supplied unit may differ. Request unit-specific photos with your quote.
MSS Automation is an independent supplier and is not an authorized distributor, affiliate or representative of the manufacturers shown. Manufacturer names, brands and trademarks belong to their respective owners and are used for identification.
MSS Automation provides its own 1 Year warranty, subject to the terms and exclusions in our warranty policy.
Availability, condition, included components, lead time and final pricing are confirmed at quotation.