
BROAN-NuTone C909 Transformer
The BROAN-NuTone C909 Transformer is a heavy-duty, tri-volt signaling solution designed for high-demand residential and light commercial door chime applications. Engineered for maximum versatility, this 20VA transformer provides three secondary output options—8V, 16V, and 24V AC—allowing contractors to power multiple door chimes or single chimes requiring higher wattage from a standard 120V AC primary source. Its open-frame design features a reliable 1/2-inch lock-mount or wall-mount attachment, reducing installation time by up to 25% for field technicians. Unlike standard low-voltage units, the C909 includes an integrated thermal cut-off switch that proactively disables the system during excessive temperature events to prevent circuit damage. As a cULus Listed component, it ensures full compliance with modern electrical codes while maintaining the rugged durability needed to minimize service callbacks for doorbell transformer replacement. This unit is the professional standard for multi-chime loops and smart video doorbell systems requiring consistent 24V 20VA power.
Key Benefits for Contractors:- Tri-Volt Output Versatility: Provides 8-volt, 16-volt, or 24-volt AC secondary leads to support a wide range of signaling devices and smart home hardware.
- Increased Power Rating: The 20VA capacity is specifically designed to handle the load of multiple chimes or power-hungry video doorbells simultaneously.
- Safety-First Design: Features an internal thermal overload protection mechanism that cuts power in the event of overheating.
- Efficient Mounting: Built for quick installation with lock-mount or surface-mount options, fitting standard junction box knockouts perfectly.
- Industry Compliance: Engineered to meet cULus Listing standards for reliable performance in professional-grade HVACR and electrical installations.
Can the C909 power two doorbells at different voltages simultaneously?
No. While this tri-volt transformer offers multiple output taps, it can only supply one voltage level at a time for the entire circuit. Using different taps simultaneously will cause internal damage.
Is the thermal cut-off switch resettable?
The thermal safety feature is a one-time deployment. If the transformer reaches critical temperatures and the cut-off triggers, the unit has reached the end of its service life and must be replaced to ensure system integrity.
Is this transformer compatible with smart video doorbells?
Yes, the 24V 20VA transformer setting is the ideal specification for most premium video doorbell brands that require stable, higher-wattage power to prevent offline issues or chime humming.
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.
BROAN-NuTone C909 Transformer
The BROAN-NuTone C909 Transformer is a heavy-duty, tri-volt signaling solution designed for high-demand residential and light commercial door chime applications. Engineered for maximum versatility, this 20VA transformer provides three secondary output options—8V, 16V, and 24V AC—allowing contractors to power multiple door chimes or single chimes requiring higher wattage from a standard 120V AC primary source. Its open-frame design features a reliable 1/2-inch lock-mount or wall-mount attachment, reducing installation time by up to 25% for field technicians. Unlike standard low-voltage units, the C909 includes an integrated thermal cut-off switch that proactively disables the system during excessive temperature events to prevent circuit damage. As a cULus Listed component, it ensures full compliance with modern electrical codes while maintaining the rugged durability needed to minimize service callbacks for doorbell transformer replacement. This unit is the professional standard for multi-chime loops and smart video doorbell systems requiring consistent 24V 20VA power.
Key Benefits for Contractors:- Tri-Volt Output Versatility: Provides 8-volt, 16-volt, or 24-volt AC secondary leads to support a wide range of signaling devices and smart home hardware.
- Increased Power Rating: The 20VA capacity is specifically designed to handle the load of multiple chimes or power-hungry video doorbells simultaneously.
- Safety-First Design: Features an internal thermal overload protection mechanism that cuts power in the event of overheating.
- Efficient Mounting: Built for quick installation with lock-mount or surface-mount options, fitting standard junction box knockouts perfectly.
- Industry Compliance: Engineered to meet cULus Listing standards for reliable performance in professional-grade HVACR and electrical installations.
Can the C909 power two doorbells at different voltages simultaneously?
No. While this tri-volt transformer offers multiple output taps, it can only supply one voltage level at a time for the entire circuit. Using different taps simultaneously will cause internal damage.
Is the thermal cut-off switch resettable?
The thermal safety feature is a one-time deployment. If the transformer reaches critical temperatures and the cut-off triggers, the unit has reached the end of its service life and must be replaced to ensure system integrity.
Is this transformer compatible with smart video doorbells?
Yes, the 24V 20VA transformer setting is the ideal specification for most premium video doorbell brands that require stable, higher-wattage power to prevent offline issues or chime humming.
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
Shipping & Returns
Shipping & Returns
Description
The BROAN-NuTone C909 Transformer is a heavy-duty, tri-volt signaling solution designed for high-demand residential and light commercial door chime applications. Engineered for maximum versatility, this 20VA transformer provides three secondary output options—8V, 16V, and 24V AC—allowing contractors to power multiple door chimes or single chimes requiring higher wattage from a standard 120V AC primary source. Its open-frame design features a reliable 1/2-inch lock-mount or wall-mount attachment, reducing installation time by up to 25% for field technicians. Unlike standard low-voltage units, the C909 includes an integrated thermal cut-off switch that proactively disables the system during excessive temperature events to prevent circuit damage. As a cULus Listed component, it ensures full compliance with modern electrical codes while maintaining the rugged durability needed to minimize service callbacks for doorbell transformer replacement. This unit is the professional standard for multi-chime loops and smart video doorbell systems requiring consistent 24V 20VA power.
Key Benefits for Contractors:- Tri-Volt Output Versatility: Provides 8-volt, 16-volt, or 24-volt AC secondary leads to support a wide range of signaling devices and smart home hardware.
- Increased Power Rating: The 20VA capacity is specifically designed to handle the load of multiple chimes or power-hungry video doorbells simultaneously.
- Safety-First Design: Features an internal thermal overload protection mechanism that cuts power in the event of overheating.
- Efficient Mounting: Built for quick installation with lock-mount or surface-mount options, fitting standard junction box knockouts perfectly.
- Industry Compliance: Engineered to meet cULus Listing standards for reliable performance in professional-grade HVACR and electrical installations.
Can the C909 power two doorbells at different voltages simultaneously?
No. While this tri-volt transformer offers multiple output taps, it can only supply one voltage level at a time for the entire circuit. Using different taps simultaneously will cause internal damage.
Is the thermal cut-off switch resettable?
The thermal safety feature is a one-time deployment. If the transformer reaches critical temperatures and the cut-off triggers, the unit has reached the end of its service life and must be replaced to ensure system integrity.
Is this transformer compatible with smart video doorbells?
Yes, the 24V 20VA transformer setting is the ideal specification for most premium video doorbell brands that require stable, higher-wattage power to prevent offline issues or chime humming.
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.












