Description
The White-Rodgers S84Z-90 transformer is a multi-mount skeleton-style transformer designed to step down line voltage to 24 VAC for HVAC control circuits. With a primary voltage range of 120, 208, or 240 VAC and a 24 VAC secondary output, this transformer is ideal for powering thermostats, relays, gas valves, and control boards. Its multi-mount design allows for flexible installation in a variety of equipment configurations, including panel, foot, or plate mounting. Built for reliable performance in HVAC environments, it is well-suited for residential and light commercial applications requiring consistent low-voltage power.
Key Features
- Primary voltage: 120/208/240 VAC
- Secondary output: 24 VAC for control circuits
- Multi-mount (skeleton) design for installation flexibility
- Suitable for HVAC controls including thermostats and relays
- Designed for residential and light commercial applications
- Durable construction for long-term reliability
- Direct replacement for White-Rodgers S84Z-90 transformer







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