Lennox 47W02 Transformer
The Lennox 47W02 is a heavy-duty OEM replacement transformer designed for critical 480V to 24V step-down applications in commercial and industrial HVAC equipment. This 75VA Class 2 transformer provides the stable low-voltage power necessary to drive control boards, contactors, and high-draw thermostats. Engineered to replace Lennox part 101908-01, it features a primary input of 480 VAC at 50/60 Hz and a secondary output of 24 VAC, ensuring consistent performance in demanding rooftop units and air handlers.
For enhanced system protection, the 47W02 transformer includes an integrated 3.2 Amp circuit breaker. This manual/auto-reset functionality eliminates the need for external fusing while protecting sensitive downstream components from overcurrent events. Built with foot-mount housing and secondary quick-connect terminals, it allows for a secure, professional installation in standard control cabinets. This unit is the primary solution for Lennox 480V transformer replacements where reliability and exact-fit compatibility are non-negotiable for service technicians.
Key Benefits for Technicians:- Direct OEM Match: Precise replacement for Lennox 101908-01, ensuring terminal alignment and mounting hole compatibility.
- Enhanced Power Capacity: The 75VA rating provides a higher current ceiling compared to standard 40VA units, preventing voltage drops during simultaneous component cycles.
- Circuit Safety: Integrated 3.2A breaker provides a resettable safety layer against low-voltage shorts, reducing total system downtime.
- Robust Construction: Designed for high-heat environments common in 480V 3-phase commercial HVAC systems.
- Standardized Connectivity: Features a combination of lead wires and male tab terminals for flexible field wiring.
Can I use the 47W02 to replace a lower VA transformer?
Yes, this 75VA transformer can safely replace 40VA or 50VA 480V/24V units, provided the primary voltage matches. The higher VA rating offers additional overhead for systems with added accessories.
Why is my transformer tripping the internal breaker?
Frequent tripping usually indicates a secondary-side short circuit or a failing contactor coil drawing excessive amperage. Verify the total VA load does not exceed 75VA.
What is the primary application for this Lennox part?
It is used extensively in 480V rooftop units (RTU) and large-scale split systems to step down high-voltage power for the 24V control 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.
Original: $92.72
-65%$92.72
$32.45Lennox 47W02 Transformer
The Lennox 47W02 is a heavy-duty OEM replacement transformer designed for critical 480V to 24V step-down applications in commercial and industrial HVAC equipment. This 75VA Class 2 transformer provides the stable low-voltage power necessary to drive control boards, contactors, and high-draw thermostats. Engineered to replace Lennox part 101908-01, it features a primary input of 480 VAC at 50/60 Hz and a secondary output of 24 VAC, ensuring consistent performance in demanding rooftop units and air handlers.
For enhanced system protection, the 47W02 transformer includes an integrated 3.2 Amp circuit breaker. This manual/auto-reset functionality eliminates the need for external fusing while protecting sensitive downstream components from overcurrent events. Built with foot-mount housing and secondary quick-connect terminals, it allows for a secure, professional installation in standard control cabinets. This unit is the primary solution for Lennox 480V transformer replacements where reliability and exact-fit compatibility are non-negotiable for service technicians.
Key Benefits for Technicians:- Direct OEM Match: Precise replacement for Lennox 101908-01, ensuring terminal alignment and mounting hole compatibility.
- Enhanced Power Capacity: The 75VA rating provides a higher current ceiling compared to standard 40VA units, preventing voltage drops during simultaneous component cycles.
- Circuit Safety: Integrated 3.2A breaker provides a resettable safety layer against low-voltage shorts, reducing total system downtime.
- Robust Construction: Designed for high-heat environments common in 480V 3-phase commercial HVAC systems.
- Standardized Connectivity: Features a combination of lead wires and male tab terminals for flexible field wiring.
Can I use the 47W02 to replace a lower VA transformer?
Yes, this 75VA transformer can safely replace 40VA or 50VA 480V/24V units, provided the primary voltage matches. The higher VA rating offers additional overhead for systems with added accessories.
Why is my transformer tripping the internal breaker?
Frequent tripping usually indicates a secondary-side short circuit or a failing contactor coil drawing excessive amperage. Verify the total VA load does not exceed 75VA.
What is the primary application for this Lennox part?
It is used extensively in 480V rooftop units (RTU) and large-scale split systems to step down high-voltage power for the 24V control 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
Product Information
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Description
The Lennox 47W02 is a heavy-duty OEM replacement transformer designed for critical 480V to 24V step-down applications in commercial and industrial HVAC equipment. This 75VA Class 2 transformer provides the stable low-voltage power necessary to drive control boards, contactors, and high-draw thermostats. Engineered to replace Lennox part 101908-01, it features a primary input of 480 VAC at 50/60 Hz and a secondary output of 24 VAC, ensuring consistent performance in demanding rooftop units and air handlers.
For enhanced system protection, the 47W02 transformer includes an integrated 3.2 Amp circuit breaker. This manual/auto-reset functionality eliminates the need for external fusing while protecting sensitive downstream components from overcurrent events. Built with foot-mount housing and secondary quick-connect terminals, it allows for a secure, professional installation in standard control cabinets. This unit is the primary solution for Lennox 480V transformer replacements where reliability and exact-fit compatibility are non-negotiable for service technicians.
Key Benefits for Technicians:- Direct OEM Match: Precise replacement for Lennox 101908-01, ensuring terminal alignment and mounting hole compatibility.
- Enhanced Power Capacity: The 75VA rating provides a higher current ceiling compared to standard 40VA units, preventing voltage drops during simultaneous component cycles.
- Circuit Safety: Integrated 3.2A breaker provides a resettable safety layer against low-voltage shorts, reducing total system downtime.
- Robust Construction: Designed for high-heat environments common in 480V 3-phase commercial HVAC systems.
- Standardized Connectivity: Features a combination of lead wires and male tab terminals for flexible field wiring.
Can I use the 47W02 to replace a lower VA transformer?
Yes, this 75VA transformer can safely replace 40VA or 50VA 480V/24V units, provided the primary voltage matches. The higher VA rating offers additional overhead for systems with added accessories.
Why is my transformer tripping the internal breaker?
Frequent tripping usually indicates a secondary-side short circuit or a failing contactor coil drawing excessive amperage. Verify the total VA load does not exceed 75VA.
What is the primary application for this Lennox part?
It is used extensively in 480V rooftop units (RTU) and large-scale split systems to step down high-voltage power for the 24V control 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.
