Description
The Siemens 3UB81134BB2 is a 3-phase overload relay engineered to provide dependable thermal overload protection for motors and electrical equipment in commercial and industrial HVAC applications. With a current adjustment range of 0.75 to 3.4 amps, this relay is well-suited for protecting smaller three-phase motors from the damaging effects of sustained overloads, phase loss, and phase imbalance.
Key Features
- Current setting range: 0.75–3.4A
- 3-phase thermal overload protection
- Designed for use with compatible Siemens contactors and motor starters
- Provides protection against overload, phase failure, and phase imbalance
- Manual and automatic reset capability
- Compact design for panel and starter integration
- Siemens 3UB8113 series construction for proven reliability
Application
Ideal for protecting three-phase motors in HVAC systems including compressors, fan motors, pump motors, and other motor-driven equipment. The 3UB81134BB2 mounts directly to matching Siemens contactors, simplifying installation and reducing panel space requirements.
Why Choose Siemens Overload Relays
Siemens overload relays are trusted across commercial and industrial installations for their accuracy, durability, and ease of integration within Siemens motor control lineups. The 3UB8113 series offers straightforward current adjustment and reliable trip characteristics to keep motors running safely and efficiently.
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