Siemens Industrial Controls 3RU2126-4AB0 Relay
The Siemens 3RU2126-4AB0 is a high-performance thermal overload relay engineered for precise protection of three-phase motors in industrial and HVACR applications. Designed for direct mounting on SIRIUS 3RT2 size S0 contactors, this unit provides a reliable current-dependent protection solution against excessive temperature rises caused by overloads or phase failure. With an adjustable current setting range of 11-16 Amps and a Class 10 trip rating, it ensures the motor is disconnected within 10 seconds or less during an overcurrent event, preventing winding damage and extending equipment service life. The integrated bimetal strips respond accurately to current fluctuations, while the manual or automatic reset options allow for flexible system recovery protocols. Built-in 1NO + 1NC auxiliary contacts provide seamless signaling for control circuits, and the screw terminal connections ensure vibration-resistant wiring. This industrial motor protection relay also features a dedicated test slide and stop button, allowing technicians to verify circuit integrity and mechanical functionality without specialized tools.
- Precise Current Adjustment: Dial-in the exact motor full-load amps between 11A and 16A for optimized protection.
- Phase Loss Sensitivity: Integrated protection against phase asymmetry and single-phasing conditions.
- Contactor Compatibility: Electrically and mechanically optimized for direct attachment to 3RT202 contactors, reducing cabinet space requirements.
- Dual Reset Modes: Switch between manual reset for troubleshooting safety or automatic reset for remote installations.
- Global Standards Compliance: Certified for IEC 60947-4-1, UL, and CSA applications in rigorous environments.
Common Questions
Is the 3RU2126-4AB0 compatible with 3RT1 contactors?
This specific model is part of the 3RU2 series and is optimized for the newer 3RT2 Size S0 frame. For legacy 3RT1 contactors, verifying the interface or using a stand-alone terminal block adapter is required.
How does the Class 10 trip characteristic affect motor startup?
A Class 10 rating is designed for standard motor startups, tripping within 10 seconds at 6 times the set current. If your application involves high-inertia loads or long starting times, a Class 20 or electronic overload may be more suitable.
Can this relay be used for single-phase motor protection?
Yes, however, to ensure the thermal overload relay functions correctly and avoids nuisance tripping from phase loss sensitivity, the three bimetal heaters must be wired in series.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Siemens Industrial Controls 3RU2126-4AB0 Relay
The Siemens 3RU2126-4AB0 is a high-performance thermal overload relay engineered for precise protection of three-phase motors in industrial and HVACR applications. Designed for direct mounting on SIRIUS 3RT2 size S0 contactors, this unit provides a reliable current-dependent protection solution against excessive temperature rises caused by overloads or phase failure. With an adjustable current setting range of 11-16 Amps and a Class 10 trip rating, it ensures the motor is disconnected within 10 seconds or less during an overcurrent event, preventing winding damage and extending equipment service life. The integrated bimetal strips respond accurately to current fluctuations, while the manual or automatic reset options allow for flexible system recovery protocols. Built-in 1NO + 1NC auxiliary contacts provide seamless signaling for control circuits, and the screw terminal connections ensure vibration-resistant wiring. This industrial motor protection relay also features a dedicated test slide and stop button, allowing technicians to verify circuit integrity and mechanical functionality without specialized tools.
- Precise Current Adjustment: Dial-in the exact motor full-load amps between 11A and 16A for optimized protection.
- Phase Loss Sensitivity: Integrated protection against phase asymmetry and single-phasing conditions.
- Contactor Compatibility: Electrically and mechanically optimized for direct attachment to 3RT202 contactors, reducing cabinet space requirements.
- Dual Reset Modes: Switch between manual reset for troubleshooting safety or automatic reset for remote installations.
- Global Standards Compliance: Certified for IEC 60947-4-1, UL, and CSA applications in rigorous environments.
Common Questions
Is the 3RU2126-4AB0 compatible with 3RT1 contactors?
This specific model is part of the 3RU2 series and is optimized for the newer 3RT2 Size S0 frame. For legacy 3RT1 contactors, verifying the interface or using a stand-alone terminal block adapter is required.
How does the Class 10 trip characteristic affect motor startup?
A Class 10 rating is designed for standard motor startups, tripping within 10 seconds at 6 times the set current. If your application involves high-inertia loads or long starting times, a Class 20 or electronic overload may be more suitable.
Can this relay be used for single-phase motor protection?
Yes, however, to ensure the thermal overload relay functions correctly and avoids nuisance tripping from phase loss sensitivity, the three bimetal heaters must be wired in series.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Description
The Siemens 3RU2126-4AB0 is a high-performance thermal overload relay engineered for precise protection of three-phase motors in industrial and HVACR applications. Designed for direct mounting on SIRIUS 3RT2 size S0 contactors, this unit provides a reliable current-dependent protection solution against excessive temperature rises caused by overloads or phase failure. With an adjustable current setting range of 11-16 Amps and a Class 10 trip rating, it ensures the motor is disconnected within 10 seconds or less during an overcurrent event, preventing winding damage and extending equipment service life. The integrated bimetal strips respond accurately to current fluctuations, while the manual or automatic reset options allow for flexible system recovery protocols. Built-in 1NO + 1NC auxiliary contacts provide seamless signaling for control circuits, and the screw terminal connections ensure vibration-resistant wiring. This industrial motor protection relay also features a dedicated test slide and stop button, allowing technicians to verify circuit integrity and mechanical functionality without specialized tools.
- Precise Current Adjustment: Dial-in the exact motor full-load amps between 11A and 16A for optimized protection.
- Phase Loss Sensitivity: Integrated protection against phase asymmetry and single-phasing conditions.
- Contactor Compatibility: Electrically and mechanically optimized for direct attachment to 3RT202 contactors, reducing cabinet space requirements.
- Dual Reset Modes: Switch between manual reset for troubleshooting safety or automatic reset for remote installations.
- Global Standards Compliance: Certified for IEC 60947-4-1, UL, and CSA applications in rigorous environments.
Common Questions
Is the 3RU2126-4AB0 compatible with 3RT1 contactors?
This specific model is part of the 3RU2 series and is optimized for the newer 3RT2 Size S0 frame. For legacy 3RT1 contactors, verifying the interface or using a stand-alone terminal block adapter is required.
How does the Class 10 trip characteristic affect motor startup?
A Class 10 rating is designed for standard motor startups, tripping within 10 seconds at 6 times the set current. If your application involves high-inertia loads or long starting times, a Class 20 or electronic overload may be more suitable.
Can this relay be used for single-phase motor protection?
Yes, however, to ensure the thermal overload relay functions correctly and avoids nuisance tripping from phase loss sensitivity, the three bimetal heaters must be wired in series.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
