Siemens Industrial Controls 3UB81334HW2 Relay
The Siemens 3UB81334HW2 is a high-performance ESP200 solid state overload relay engineered for precise protection of single and polyphase motors in heavy-duty industrial applications. Operating within a 50-200AMP range, this Size B unit handles high-demand 3-phase loads with an adjustable 4:1 FLA dial, allowing for tight current settings across multiple motor sizes. Advanced electronics eliminate the need for traditional thermal heaters, reducing cabinet heat and inventory complexity for field technicians. The unit features tri-class protection (Class 5, 10, 20, or 30) selectable via integrated DIP switches, providing flexibility for light or heavy starts. Designed for direct mounting or stand-alone installation, it includes phase loss protection that trips in under 3 seconds to prevent motor burnout. Additional onboard intelligence provides ground fault detection and phase unbalance monitoring, ensuring operational stability in demanding HVACR and industrial environments.
Key Benefits- Universal Compatibility: Adjustable 50-200AMP current range and selectable trip classes (5 to 30) make it suitable for a wide variety of motor-starting conditions.
- Enhanced Protection: Integrated phase loss protection, phase unbalance monitoring, and ground fault detection (trips at 60% of motor current) minimize the risk of insulation damage.
- Operational Reliability: Self-powered design requires no external control source and features conformally coated circuit boards for resistance to moisture and industrial contaminants.
- Flexible Resets: Supports manual, automatic, and remote reset configurations to meet specific safety protocols and application requirements.
Is this a direct replacement for ESP100 series relays?
Yes, the ESP200 series shares the same physical footprint and mounting dimensions as the older ESP100 units, making it an ideal drop-in replacement for retrofitting existing NEMA starters.
Does this relay require external heaters?
No, this is a solid state electronic overload relay. It utilizes internal current transformers and electronics to monitor load, eliminating the need to purchase or install separate thermal heater elements.
Can I mount this relay away from the contactor?
Yes, the 3UB81334HW2 is designed for both direct mounting to a Siemens contactor and stand-alone mounting. It features main circuit "windows" for easy passthrough of motor leads.
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.
Original: $417.30
-65%$417.30
$146.06Siemens Industrial Controls 3UB81334HW2 Relay
The Siemens 3UB81334HW2 is a high-performance ESP200 solid state overload relay engineered for precise protection of single and polyphase motors in heavy-duty industrial applications. Operating within a 50-200AMP range, this Size B unit handles high-demand 3-phase loads with an adjustable 4:1 FLA dial, allowing for tight current settings across multiple motor sizes. Advanced electronics eliminate the need for traditional thermal heaters, reducing cabinet heat and inventory complexity for field technicians. The unit features tri-class protection (Class 5, 10, 20, or 30) selectable via integrated DIP switches, providing flexibility for light or heavy starts. Designed for direct mounting or stand-alone installation, it includes phase loss protection that trips in under 3 seconds to prevent motor burnout. Additional onboard intelligence provides ground fault detection and phase unbalance monitoring, ensuring operational stability in demanding HVACR and industrial environments.
Key Benefits- Universal Compatibility: Adjustable 50-200AMP current range and selectable trip classes (5 to 30) make it suitable for a wide variety of motor-starting conditions.
- Enhanced Protection: Integrated phase loss protection, phase unbalance monitoring, and ground fault detection (trips at 60% of motor current) minimize the risk of insulation damage.
- Operational Reliability: Self-powered design requires no external control source and features conformally coated circuit boards for resistance to moisture and industrial contaminants.
- Flexible Resets: Supports manual, automatic, and remote reset configurations to meet specific safety protocols and application requirements.
Is this a direct replacement for ESP100 series relays?
Yes, the ESP200 series shares the same physical footprint and mounting dimensions as the older ESP100 units, making it an ideal drop-in replacement for retrofitting existing NEMA starters.
Does this relay require external heaters?
No, this is a solid state electronic overload relay. It utilizes internal current transformers and electronics to monitor load, eliminating the need to purchase or install separate thermal heater elements.
Can I mount this relay away from the contactor?
Yes, the 3UB81334HW2 is designed for both direct mounting to a Siemens contactor and stand-alone mounting. It features main circuit "windows" for easy passthrough of motor leads.
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.
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Description
The Siemens 3UB81334HW2 is a high-performance ESP200 solid state overload relay engineered for precise protection of single and polyphase motors in heavy-duty industrial applications. Operating within a 50-200AMP range, this Size B unit handles high-demand 3-phase loads with an adjustable 4:1 FLA dial, allowing for tight current settings across multiple motor sizes. Advanced electronics eliminate the need for traditional thermal heaters, reducing cabinet heat and inventory complexity for field technicians. The unit features tri-class protection (Class 5, 10, 20, or 30) selectable via integrated DIP switches, providing flexibility for light or heavy starts. Designed for direct mounting or stand-alone installation, it includes phase loss protection that trips in under 3 seconds to prevent motor burnout. Additional onboard intelligence provides ground fault detection and phase unbalance monitoring, ensuring operational stability in demanding HVACR and industrial environments.
Key Benefits- Universal Compatibility: Adjustable 50-200AMP current range and selectable trip classes (5 to 30) make it suitable for a wide variety of motor-starting conditions.
- Enhanced Protection: Integrated phase loss protection, phase unbalance monitoring, and ground fault detection (trips at 60% of motor current) minimize the risk of insulation damage.
- Operational Reliability: Self-powered design requires no external control source and features conformally coated circuit boards for resistance to moisture and industrial contaminants.
- Flexible Resets: Supports manual, automatic, and remote reset configurations to meet specific safety protocols and application requirements.
Is this a direct replacement for ESP100 series relays?
Yes, the ESP200 series shares the same physical footprint and mounting dimensions as the older ESP100 units, making it an ideal drop-in replacement for retrofitting existing NEMA starters.
Does this relay require external heaters?
No, this is a solid state electronic overload relay. It utilizes internal current transformers and electronics to monitor load, eliminating the need to purchase or install separate thermal heater elements.
Can I mount this relay away from the contactor?
Yes, the 3UB81334HW2 is designed for both direct mounting to a Siemens contactor and stand-alone mounting. It features main circuit "windows" for easy passthrough of motor leads.
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.
