Siemens Industrial Controls 3RU2136-4FB0 Relay
The Siemens 3RU2136-4FB0 is a high-performance thermal overload relay engineered for heavy-duty 3-phase motor protection in industrial HVACR systems. Designed as part of the SIRIUS innovation range, this Size S2 overload relay provides a reliable current setting range of 28 to 40 Amps, making it a standard choice for protecting motors against overheating due to overload or phase failure. Featuring Class 10 tripping characteristics, it ensures rapid disconnection in under 10 seconds during overcurrent events, shielding expensive compressors and fan motors from permanent damage. The 3RU2136-4FB0 is optimized for SIRIUS 3RT203 contactor mounting, utilizing robust screw terminals for secure power and auxiliary circuit connections. With built-in manual and automatic reset options, alongside integrated 1NO + 1NC auxiliary contacts for fault signaling, this relay offers the flexible motor protection and physical diagnostics that veteran contractors demand for 690V AC applications.
Key Benefits for the Jobsite:- S2 Frame Compatibility: Engineered specifically for direct mounting onto Siemens 3RT203 series contactors, reducing enclosure footprint and assembly time.
- Phase Failure Protection: Automatically detects phase asymmetry or total loss, preventing single-phasing conditions that cause rapid motor burnout.
- Adjustable Dial: Precision current setting allows you to fine-tune the 28-40A range to match actual motor nameplate FLA for tight protection curves.
- Versatile Reset Logic: Switch seamlessly between manual resetting for troubleshooting and automatic resetting for remote or difficult-to-access mechanical rooms.
- Can I use this for delta-started motors? Yes, provided measurements account for the ×0.58 factor if the relay is placed within the phase circuit, or full FLA if placed in the supply line.
- What is the maximum operating voltage? This unit is rated for an auxiliary or main insulation voltage of 690V AC, suitable for most industrial power grids.
- How do the auxiliary contacts function? The integrated 1NO + 1NC contacts act as a dedicated fault switch, allowing for status indication on a control panel or PLC input while cutting the contactor coil circuit.
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 3RU2136-4FB0 Relay
The Siemens 3RU2136-4FB0 is a high-performance thermal overload relay engineered for heavy-duty 3-phase motor protection in industrial HVACR systems. Designed as part of the SIRIUS innovation range, this Size S2 overload relay provides a reliable current setting range of 28 to 40 Amps, making it a standard choice for protecting motors against overheating due to overload or phase failure. Featuring Class 10 tripping characteristics, it ensures rapid disconnection in under 10 seconds during overcurrent events, shielding expensive compressors and fan motors from permanent damage. The 3RU2136-4FB0 is optimized for SIRIUS 3RT203 contactor mounting, utilizing robust screw terminals for secure power and auxiliary circuit connections. With built-in manual and automatic reset options, alongside integrated 1NO + 1NC auxiliary contacts for fault signaling, this relay offers the flexible motor protection and physical diagnostics that veteran contractors demand for 690V AC applications.
Key Benefits for the Jobsite:- S2 Frame Compatibility: Engineered specifically for direct mounting onto Siemens 3RT203 series contactors, reducing enclosure footprint and assembly time.
- Phase Failure Protection: Automatically detects phase asymmetry or total loss, preventing single-phasing conditions that cause rapid motor burnout.
- Adjustable Dial: Precision current setting allows you to fine-tune the 28-40A range to match actual motor nameplate FLA for tight protection curves.
- Versatile Reset Logic: Switch seamlessly between manual resetting for troubleshooting and automatic resetting for remote or difficult-to-access mechanical rooms.
- Can I use this for delta-started motors? Yes, provided measurements account for the ×0.58 factor if the relay is placed within the phase circuit, or full FLA if placed in the supply line.
- What is the maximum operating voltage? This unit is rated for an auxiliary or main insulation voltage of 690V AC, suitable for most industrial power grids.
- How do the auxiliary contacts function? The integrated 1NO + 1NC contacts act as a dedicated fault switch, allowing for status indication on a control panel or PLC input while cutting the contactor coil circuit.
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
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Shipping & Returns
Description
The Siemens 3RU2136-4FB0 is a high-performance thermal overload relay engineered for heavy-duty 3-phase motor protection in industrial HVACR systems. Designed as part of the SIRIUS innovation range, this Size S2 overload relay provides a reliable current setting range of 28 to 40 Amps, making it a standard choice for protecting motors against overheating due to overload or phase failure. Featuring Class 10 tripping characteristics, it ensures rapid disconnection in under 10 seconds during overcurrent events, shielding expensive compressors and fan motors from permanent damage. The 3RU2136-4FB0 is optimized for SIRIUS 3RT203 contactor mounting, utilizing robust screw terminals for secure power and auxiliary circuit connections. With built-in manual and automatic reset options, alongside integrated 1NO + 1NC auxiliary contacts for fault signaling, this relay offers the flexible motor protection and physical diagnostics that veteran contractors demand for 690V AC applications.
Key Benefits for the Jobsite:- S2 Frame Compatibility: Engineered specifically for direct mounting onto Siemens 3RT203 series contactors, reducing enclosure footprint and assembly time.
- Phase Failure Protection: Automatically detects phase asymmetry or total loss, preventing single-phasing conditions that cause rapid motor burnout.
- Adjustable Dial: Precision current setting allows you to fine-tune the 28-40A range to match actual motor nameplate FLA for tight protection curves.
- Versatile Reset Logic: Switch seamlessly between manual resetting for troubleshooting and automatic resetting for remote or difficult-to-access mechanical rooms.
- Can I use this for delta-started motors? Yes, provided measurements account for the ×0.58 factor if the relay is placed within the phase circuit, or full FLA if placed in the supply line.
- What is the maximum operating voltage? This unit is rated for an auxiliary or main insulation voltage of 690V AC, suitable for most industrial power grids.
- How do the auxiliary contacts function? The integrated 1NO + 1NC contacts act as a dedicated fault switch, allowing for status indication on a control panel or PLC input while cutting the contactor coil circuit.
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.
