Siemens
Siemens 3UG4511-1BP20 Analog Phase Sequence Monitoring Relay
Siemens 3UG4511-1BP20 Analog Phase Sequence Monitoring Relay
● In Stock
12-Mo Warranty
Same-Day Dispatch
Ships Worldwide
🎖 Veteran-Owned
In Stock — Ready to Ship
Get a price for 3UG4511-1BP20
Response within 1 business hour
12-month warranty
All units tested
Same-day dispatch
Order by 2pm CST
Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
Phase sequence recognition
Phase failure detection
Two changeover contacts
6 kV surge voltage resistance
10,000,000 operating cycles
Product description
The Siemens 3UG4511-1BP20 is an analog monitoring relay designed for phase sequence and phase failure monitoring. It operates within a voltage range of 3 x 320 to 500V AC and features two changeover contacts.
This relay provides enhanced protection for three-phase electrical systems by detecting incorrect phase sequence and phase loss. The dual changeover contacts offer greater flexibility in control circuit design and alarm integration.
Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3UG4511-1BP20. We are committed to providing quality industrial automation components and excellent customer support.
Technical specifications
| Type | Analog Monitoring Relay |
| Function | Phase Sequence & Failure Monitoring |
| Voltage | 3 x 320-500 V AC |
| Frequency | 50/60 Hz |
| Contacts | 2 Changeover |
| Terminals | Screw |
Common applications
Three-phase motor protection
Industrial control panels
Machine safety
Power monitoring
Automation systems
Compatible systems
Three-phase power systems
Also known as
Siemens 3UG4511 Phase Relay
Analog Phase Monitor 3UG4511-1BP20
Siemens Phase Failure Relay
Replaces / compatible with
This is a product phase-out. The preferred successor is 3UG5511-1BR20.
Technical note
Expert tip
The two changeover contacts provide versatile switching options for integrating into complex control and safety circuits.What happens next?
1
Email confirmation
Immediate receipt acknowledgment sent to you
2
Account manager assigned
Confirms your part's spec and condition
3
Your quote delivered
Tailored to your specific requirements
Frequently asked questions
How many changeover contacts does the Siemens 3UG4511-1BP20 offer?
The Siemens 3UG4511-1BP20 features two changeover contacts (DPDT). This provides increased flexibility for control and alarm signaling in three-phase monitoring applications.