
Siemens Industrial Controls 3RU2116-1FB0 Relay
The Siemens SIRIUS 3RU2116-1FB0 is a precision-engineered thermal overload relay designed for reliable motor protection in industrial and commercial HVACR applications. Built for S00 frame size contactors, this 3-pole unit features an adjustable current setting range of 3.5 to 5.0 Amps, providing a robust defense against overheating caused by overloads or phase failure. As a Class 10 overload relay, it ensures a trip response in 10 seconds or less under locked-rotor conditions, effectively isolating downstream components before thermal damage occurs. The device is equipped with integrated screw terminals for secure electrical termination and offers a manual-automatic reset selector to suit various control logic requirements. Compatibility is seamless with 3RT2015 through 3RT2018 contactors, allowing for direct mounting to minimize enclosure footprint. The 1 NO + 1 NC auxiliary contacts provide clear signaling for fault monitoring, making this a standard-issue component for technicians prioritizing system uptime and electrical safety.
Key Benefits- Adjustable Current Range: Field-tunable dial allows for precise 3.5-5A calibration to match specific motor nameplate data.
- Compact S00 Design: Specifically engineered for direct integration with Siemens SIRIUS S00 contactors, reducing wiring labor.
- Phase Loss Sensitivity: Dynamic bimetal mechanism detects phase asymmetry and failure to prevent single-phasing motor burnout.
- Operational Versatility: Dual-mode reset functionality and a visual "Tripped" indicator simplify diagnostics for field service calls.
- High Insulation Rating: Rated for up to 690V insulation voltage with 6kV surge resistance for harsh electrical environments.
Is the 3RU2116-1FB0 compatible with older Siemens contactors?
This relay is part of the 3RU2 generation, optimized for the 3RT2 series contactors. While it supports S00 frame sizes, checking the specific terminal alignment is critical when attempting to retrofit legacy 3RT1 systems.
How do I toggle between manual and automatic reset modes?
The unit features a blue reset selector on the front face. Pressing the button performs a manual reset, while turning the selector allows icons to indicate the permanent automatic reset state.
What is the difference between Class 10 and Class 20 tripping?
Class 10 signifies the relay will trip within 10 seconds at 6x the set current, which is standard for most HVACR motors with normal starting times. Class 20 is reserved for high-inertia loads with longer start-up cycles.
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 3RU2116-1FB0 Relay
The Siemens SIRIUS 3RU2116-1FB0 is a precision-engineered thermal overload relay designed for reliable motor protection in industrial and commercial HVACR applications. Built for S00 frame size contactors, this 3-pole unit features an adjustable current setting range of 3.5 to 5.0 Amps, providing a robust defense against overheating caused by overloads or phase failure. As a Class 10 overload relay, it ensures a trip response in 10 seconds or less under locked-rotor conditions, effectively isolating downstream components before thermal damage occurs. The device is equipped with integrated screw terminals for secure electrical termination and offers a manual-automatic reset selector to suit various control logic requirements. Compatibility is seamless with 3RT2015 through 3RT2018 contactors, allowing for direct mounting to minimize enclosure footprint. The 1 NO + 1 NC auxiliary contacts provide clear signaling for fault monitoring, making this a standard-issue component for technicians prioritizing system uptime and electrical safety.
Key Benefits- Adjustable Current Range: Field-tunable dial allows for precise 3.5-5A calibration to match specific motor nameplate data.
- Compact S00 Design: Specifically engineered for direct integration with Siemens SIRIUS S00 contactors, reducing wiring labor.
- Phase Loss Sensitivity: Dynamic bimetal mechanism detects phase asymmetry and failure to prevent single-phasing motor burnout.
- Operational Versatility: Dual-mode reset functionality and a visual "Tripped" indicator simplify diagnostics for field service calls.
- High Insulation Rating: Rated for up to 690V insulation voltage with 6kV surge resistance for harsh electrical environments.
Is the 3RU2116-1FB0 compatible with older Siemens contactors?
This relay is part of the 3RU2 generation, optimized for the 3RT2 series contactors. While it supports S00 frame sizes, checking the specific terminal alignment is critical when attempting to retrofit legacy 3RT1 systems.
How do I toggle between manual and automatic reset modes?
The unit features a blue reset selector on the front face. Pressing the button performs a manual reset, while turning the selector allows icons to indicate the permanent automatic reset state.
What is the difference between Class 10 and Class 20 tripping?
Class 10 signifies the relay will trip within 10 seconds at 6x the set current, which is standard for most HVACR motors with normal starting times. Class 20 is reserved for high-inertia loads with longer start-up cycles.
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 SIRIUS 3RU2116-1FB0 is a precision-engineered thermal overload relay designed for reliable motor protection in industrial and commercial HVACR applications. Built for S00 frame size contactors, this 3-pole unit features an adjustable current setting range of 3.5 to 5.0 Amps, providing a robust defense against overheating caused by overloads or phase failure. As a Class 10 overload relay, it ensures a trip response in 10 seconds or less under locked-rotor conditions, effectively isolating downstream components before thermal damage occurs. The device is equipped with integrated screw terminals for secure electrical termination and offers a manual-automatic reset selector to suit various control logic requirements. Compatibility is seamless with 3RT2015 through 3RT2018 contactors, allowing for direct mounting to minimize enclosure footprint. The 1 NO + 1 NC auxiliary contacts provide clear signaling for fault monitoring, making this a standard-issue component for technicians prioritizing system uptime and electrical safety.
Key Benefits- Adjustable Current Range: Field-tunable dial allows for precise 3.5-5A calibration to match specific motor nameplate data.
- Compact S00 Design: Specifically engineered for direct integration with Siemens SIRIUS S00 contactors, reducing wiring labor.
- Phase Loss Sensitivity: Dynamic bimetal mechanism detects phase asymmetry and failure to prevent single-phasing motor burnout.
- Operational Versatility: Dual-mode reset functionality and a visual "Tripped" indicator simplify diagnostics for field service calls.
- High Insulation Rating: Rated for up to 690V insulation voltage with 6kV surge resistance for harsh electrical environments.
Is the 3RU2116-1FB0 compatible with older Siemens contactors?
This relay is part of the 3RU2 generation, optimized for the 3RT2 series contactors. While it supports S00 frame sizes, checking the specific terminal alignment is critical when attempting to retrofit legacy 3RT1 systems.
How do I toggle between manual and automatic reset modes?
The unit features a blue reset selector on the front face. Pressing the button performs a manual reset, while turning the selector allows icons to indicate the permanent automatic reset state.
What is the difference between Class 10 and Class 20 tripping?
Class 10 signifies the relay will trip within 10 seconds at 6x the set current, which is standard for most HVACR motors with normal starting times. Class 20 is reserved for high-inertia loads with longer start-up cycles.
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.












