Description
Siemens 3RU2126-1HB0 Overload Relay — S0 Frame, 5.5–8A, Screw Terminal
The Siemens 3RU2126-1HB0 is a thermal overload relay engineered for dependable motor protection in HVAC, commercial, and industrial applications. Designed for the S0 contactor frame size, this relay provides adjustable overload protection across a 5.5–8A current range and features convenient screw terminal connections for secure, field-ready wiring.
Key Features
- Thermal overload relay designed for motor protection in HVAC and industrial systems
- Compatible with S0 frame size contactors and motor starters
- Adjustable current setting range: 5.5–8A
- Screw terminal connections for reliable, vibration-resistant wiring
- Manual and automatic reset capability for flexible operation
- Integrated trip indicator for fast fault identification
- Phase failure sensitivity helps prevent motor damage from single-phasing
- Compact design for panel space efficiency
Specifications
- SKU: 3RU2126-1HB0
- Brand: Siemens
- Type: Thermal Overload Relay
- Frame Size: S0
- Current Range: 5.5–8A
- Terminal Type: Screw
Application
Ideal for use with Siemens 3RT series contactors and motor starters in HVAC equipment, pumps, fans, compressors, and other motor-driven loads requiring reliable overcurrent protection.







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