Overview
The NuTone 101-T transformer is a signaling transformer designed for low-voltage power distribution in door chime and intercom applications. Each unit converts 120VAC primary input to 16VAC secondary output at 10 watts, with built-in thermal overload protection to prevent system damage from overcurrent conditions. This lot contains three new-in-box units with factory-installed ground wire for enhanced safety and simplified installation.
Key Features
- Non-Regenerative Thermal Overload Protection prevents nuisance shutdowns and system damage
- Ground wire pre-installed for code compliance and shock protection
- Flexible mounting: fits standard 1/2″ knockout or surface mount applications
- 50/60 Hz compatible for global electrical standards
- Compact, lightweight design (1 lb per unit) reduces installation time
Technical Specifications
- Primary Voltage: 120VAC
- Secondary Voltage: 16VAC
- Power Rating: 10 watts (10 VA)
- Frequency: 50/60 Hz
- Overload Protection: Non-Regenerative Thermal Cutoff
- Mounting Type: 1/2″ Knockout or Surface Mount
- Unit Weight: 1.0 lb each
- Ground Wire: Yes, factory-installed
- Package Quantity: 3 units per lot
Typical Applications
The 101-T is widely used in residential and commercial doorbell and chime systems, as well as intercom applications requiring 16V low-voltage power. The thermal overload protection makes it suitable for installations where occasional demand spikes may occur. Its compact form factor and standard mounting provisions allow it to fit into electrical boxes alongside circuit breakers and other controls.
Compatibility & Replacements
Compatible With
- Standard doorbell chime units rated for 16VAC, 10W
- Low-voltage intercom systems and signaling devices
- 12–20W doorbell transformer receptacles and knockout boxes
- 50/60 Hz AC electrical distribution systems
Replaces / Drop-In Replacement For
The NuTone 101-T is discontinued by the manufacturer. Verify compatibility with your specific chime or intercom model before ordering, as secondary voltage and wattage requirements must match exactly. Similar replacement options may be available from current NuTone product lines (e.g., C905, C907 series), though dimensional and mounting differences should be confirmed.
Works With
- Standard electrical conduit and raceway systems
- Existing 120VAC branch circuits via standard breaker panels
- Legacy doorbell chime and intercom installations
- Any 16VAC, 10W or lower-power signaling device
