Siemens Industrial Controls 3UB81134AB2 Relay
The Siemens 3UB81134AB2 is a high-precision ESP200 solid state overload relay designed for critical motor protection in industrial and HVACR environments. Engineered for three-phase systems, this adjustable 0.25-1 amp relay provides a wide 4:1 current range, allowing technicians to replace multiple bimetallic heaters with a single, reliable electronic unit. It features selectable trip classes (5, 10, 20, or 30), offering the flexibility needed for both standard and heavy-duty starting applications without the risk of nuisance tripping.
This Siemens overload relay incorporates phase loss protection that triggers a trip in less than 3 seconds, effectively shielding low-amperage motors from catastrophic overheating and burnout. The unit is ambient insensitive, maintaining precise tripping characteristics across a temperature range of -25°C to 65°C. With a conformally coated circuit board, the 3UB81134AB2 is built to withstand harsh environments characterized by humidity, dust, and vibration. Its manual and automatic reset functionality, combined with screw terminal connections, ensures seamless integration into existing motor control centers and NEMA starters.
Key Benefits:
- Broad FLA Adjustment: The 0.25 to 1 Amp range eliminates the need for external heaters and simplifies inventory for low-draw motors.
- Rapid Phase Protection: Superior solid state motor protection detects phase unbalance and loss quickly to prevent winding damage.
- Multiple Trip Classes: Field-selectable switches allow for precise tuning based on specific motor load and startup duration requirements.
- Reduced Power Consumption: The self-powered electronic design generates up to 98% less heat than traditional thermal overloads, reducing cabinet cooling costs.
Common Questions:
- Is this relay compatible with single-phase motors? While optimized for 3-phase circuits, some ESP200 models can be used with single-phase loads if the current is looped through all three poles; always consult the wiring diagram for this specific frame.
- Does it require a separate control power source? No, the 3UB81134AB2 is self-powered from the main circuit current, reducing wiring complexity and external power supply costs.
- How do I reset the relay after a trip? You can toggle between manual and automatic reset using the top-mounted selector; automatic reset typically occurs approximately 3 minutes after the trip to allow for motor cooling.
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: $298.25
-65%$298.25
$104.39Siemens Industrial Controls 3UB81134AB2 Relay
The Siemens 3UB81134AB2 is a high-precision ESP200 solid state overload relay designed for critical motor protection in industrial and HVACR environments. Engineered for three-phase systems, this adjustable 0.25-1 amp relay provides a wide 4:1 current range, allowing technicians to replace multiple bimetallic heaters with a single, reliable electronic unit. It features selectable trip classes (5, 10, 20, or 30), offering the flexibility needed for both standard and heavy-duty starting applications without the risk of nuisance tripping.
This Siemens overload relay incorporates phase loss protection that triggers a trip in less than 3 seconds, effectively shielding low-amperage motors from catastrophic overheating and burnout. The unit is ambient insensitive, maintaining precise tripping characteristics across a temperature range of -25°C to 65°C. With a conformally coated circuit board, the 3UB81134AB2 is built to withstand harsh environments characterized by humidity, dust, and vibration. Its manual and automatic reset functionality, combined with screw terminal connections, ensures seamless integration into existing motor control centers and NEMA starters.
Key Benefits:
- Broad FLA Adjustment: The 0.25 to 1 Amp range eliminates the need for external heaters and simplifies inventory for low-draw motors.
- Rapid Phase Protection: Superior solid state motor protection detects phase unbalance and loss quickly to prevent winding damage.
- Multiple Trip Classes: Field-selectable switches allow for precise tuning based on specific motor load and startup duration requirements.
- Reduced Power Consumption: The self-powered electronic design generates up to 98% less heat than traditional thermal overloads, reducing cabinet cooling costs.
Common Questions:
- Is this relay compatible with single-phase motors? While optimized for 3-phase circuits, some ESP200 models can be used with single-phase loads if the current is looped through all three poles; always consult the wiring diagram for this specific frame.
- Does it require a separate control power source? No, the 3UB81134AB2 is self-powered from the main circuit current, reducing wiring complexity and external power supply costs.
- How do I reset the relay after a trip? You can toggle between manual and automatic reset using the top-mounted selector; automatic reset typically occurs approximately 3 minutes after the trip to allow for motor cooling.
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 3UB81134AB2 is a high-precision ESP200 solid state overload relay designed for critical motor protection in industrial and HVACR environments. Engineered for three-phase systems, this adjustable 0.25-1 amp relay provides a wide 4:1 current range, allowing technicians to replace multiple bimetallic heaters with a single, reliable electronic unit. It features selectable trip classes (5, 10, 20, or 30), offering the flexibility needed for both standard and heavy-duty starting applications without the risk of nuisance tripping.
This Siemens overload relay incorporates phase loss protection that triggers a trip in less than 3 seconds, effectively shielding low-amperage motors from catastrophic overheating and burnout. The unit is ambient insensitive, maintaining precise tripping characteristics across a temperature range of -25°C to 65°C. With a conformally coated circuit board, the 3UB81134AB2 is built to withstand harsh environments characterized by humidity, dust, and vibration. Its manual and automatic reset functionality, combined with screw terminal connections, ensures seamless integration into existing motor control centers and NEMA starters.
Key Benefits:
- Broad FLA Adjustment: The 0.25 to 1 Amp range eliminates the need for external heaters and simplifies inventory for low-draw motors.
- Rapid Phase Protection: Superior solid state motor protection detects phase unbalance and loss quickly to prevent winding damage.
- Multiple Trip Classes: Field-selectable switches allow for precise tuning based on specific motor load and startup duration requirements.
- Reduced Power Consumption: The self-powered electronic design generates up to 98% less heat than traditional thermal overloads, reducing cabinet cooling costs.
Common Questions:
- Is this relay compatible with single-phase motors? While optimized for 3-phase circuits, some ESP200 models can be used with single-phase loads if the current is looped through all three poles; always consult the wiring diagram for this specific frame.
- Does it require a separate control power source? No, the 3UB81134AB2 is self-powered from the main circuit current, reducing wiring complexity and external power supply costs.
- How do I reset the relay after a trip? You can toggle between manual and automatic reset using the top-mounted selector; automatic reset typically occurs approximately 3 minutes after the trip to allow for motor cooling.
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.
