Mars 50353 Nema Class Ii Open Construction Transformer 240 to 24V 40VA Foot-mount

Product Description

The MARS 50353 is a NEMA Class II open construction transformer designed for HVAC control circuits and low-voltage applications. It steps voltage down from 240 volts to 24 volts and delivers 40 volt-amperes of output capacity. HVAC technicians and controls installers rely on this type of transformer to power thermostats, control boards, zone valves, and other 24-volt components in residential and light commercial systems. The foot-mount design makes it easy to secure the unit to a panel, chassis, or equipment frame using standard hardware. Open construction allows for airflow around the core and coils, which helps manage heat during continuous operation. NEMA Class II designation means the transformer meets recognized safety standards for low-voltage secondary circuit outputs, limiting the output to safe levels that reduce shock and fire risk. This is a critical compliance requirement for many HVAC installations and inspections. The 50353 is a direct replacement for failed or aging transformers in air handlers, heat pumps, furnaces, rooftop units, and other equipment that uses 240-volt primary power. When a control board, thermostat, or zone valve loses 24-volt power, this transformer is one of the first components to check and replace. Installers appreciate the straightforward wiring connections and the compact form factor that fits into tight equipment compartments. The 40VA rating provides enough capacity to handle multiple control circuit loads simultaneously, making it suitable for systems with zone controls or multiple low-voltage accessories. Having this transformer on the service truck reduces callbacks and keeps equipment up and running with minimal downtime.

• Steps voltage down from 240 volts to 24 volts for HVAC control circuit power
• 40VA output capacity supports thermostats, zone valves, control boards, and multiple low-voltage loads
• NEMA Class II open construction with foot-mount for easy panel or chassis installation

Product Highlights

The MARS 50353 is a reliable 240 to 24 volt, 40VA NEMA Class II foot-mount transformer built for HVAC control circuit applications. Its open construction and standard foot-mount design make installation fast and straightforward in a wide range of residential and commercial equipment.

Product Information

Standard Information

• Brand: MARS
• Manufacturer Part Number: 50353

Technical Specifications

• Primary Voltage: 240V
• Secondary Voltage: 24V
• Output Capacity: 40VA
• Construction Type: Open
• Safety Class: NEMA Class II
• Mounting Style: Foot-Mount