Johnson Controls TR100VA004 100VA Multi-Tap Transformer 480/277/240/120V to 24V

The Johnson Controls TR100VA004 is a 100VA class 2 control transformer designed for HVAC and building automation applications. This versatile multi-tap transformer provides flexible voltage conversion from multiple primary voltages (480V, 277V, 240V, or 120V) down to 24V secondary output, making it ideal for powering thermostats, control circuits, and other low-voltage HVAC equipment.

Key Features:

• 100VA power capacity for reliable control circuit operation
• Multi-tap primary: 480V, 277V, 240V, and 120V inputs for installation flexibility
• 24V secondary output for standard HVAC control systems
• Class 2 rated for inherent overcurrent protection
• UL recognized and CSA certified for safety compliance
• Compact footprint for easy mounting in control panels and equipment
• Thermal overload protection prevents damage from fault conditions

This transformer is commonly used in air handlers, furnaces, rooftop units, and building automation systems where multiple primary voltage options are required. The Class 2 rating eliminates the need for external overcurrent protection on the secondary side, simplifying installation and reducing costs.