Description
The Siemens 3RU2136-4GB0 is a thermal overload relay engineered for dependable motor protection in demanding HVAC and industrial applications. Designed for use with Size S2 contactors, this relay provides Class 10 trip response, making it well-suited for standard motor loads that require fast, precise overload protection.
Key Features
- Current setting range: 36–45 A
- Trip class: Class 10 (CL10) for fast motor protection response
- Contactor frame size: S2
- Connection type: Screw terminals for secure, reliable wiring
- Provides phase-failure sensitivity to protect against single-phasing conditions
- Manual and automatic reset modes
- Integrated test and reset button
- Auxiliary contacts included for control circuit signaling
- Direct mounting onto Siemens S2 contactors — no additional adapter required
Application
The 3RU2136-4GB0 is ideal for protecting three-phase motors in HVAC equipment including air handlers, chillers, compressors, pumps, and fans. Its Class 10 trip characteristic ensures the motor is disconnected quickly under overload conditions, reducing heat damage and extending equipment life.
Product Specifications
- SKU / Part Number: 3RU2136-4GB0
- Brand: Siemens
- Series: 3RU2
- Frame Size: S2
- Trip Class: Class 10
- Current Range: 36–45 A
- Terminal Type: Screw
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