Lennox 42W94 - (LB-74930) Class 2 Transformer | 75 VA, 480V Primary to 24V Secondary with Built-in 3.5A Circuit Breaker

 

The Lennox 42W94 (LB-74930) is a high-efficiency Class 2 low-voltage transformer designed to supply power to control systems and components in HVAC applications. With a power capacity of 75 volt-amperes (VA), this transformer ensures reliable operation of thermostats, relays, contactors, and other low-voltage controls essential for heating and cooling system functionality.

 

Primary Functionality:
This transformer steps down 480 VAC input voltage to a stable 24 VAC output, making it ideal for use in systems where a safe, low-voltage control circuit is needed. Operating at 50/60 Hz, it is suitable for a wide range of commercial and industrial applications where 480V service is standard.

 

Integrated Circuit Protection:
To enhance system safety and longevity, the 42W94 includes a factory-installed 3.5 amp circuit breaker on the secondary side. This circuit breaker helps prevent equipment damage by interrupting power in the event of a short circuit or overcurrent, providing an extra layer of protection for sensitive control components.

 

Durability and Compliance:
Built to Lennox’s rigorous quality standards, this transformer is constructed from durable materials and meets Class 2 safety requirements as defined by NEC (National Electrical Code) guidelines. Class 2 transformers are specifically designed to limit output voltage and current to minimize fire and electric shock hazards.

 

Product Specifications:

Upgrade or replace your HVAC system’s transformer with the Lennox 42W94 at Beenimax.com for a safe, consistent, and code-compliant power solution.