Hammond VT57A Open Type Transformer

Product Description

The HAMMOND VT57A is an open type transformer designed for use in control and low-voltage distribution circuits. Open type construction means the core and coil assembly is exposed, making it suitable for enclosure mounting in panels, control boxes, and equipment cabinets where the surrounding enclosure provides environmental protection. Licensed electricians and HVAC controls technicians install this class of transformer when converting line voltage to a lower control-circuit voltage. The open frame design allows for straightforward integration into custom enclosures and OEM equipment builds.

The VT57A is suited for residential and light commercial control circuit applications where a compact, open type transformer is required. Typical installations include HVAC control panels, industrial control enclosures, and low-voltage distribution systems. The open type form factor makes it a common choice for OEM equipment manufacturers and panel builders who integrate the transformer into a larger assembly with its own enclosure.

Key Features

• Open type core and coil construction for panel and enclosure mounting
• Suitable for control circuit and low-voltage distribution applications
• Compact form factor supports integration into custom control enclosures
• Designed for residential and light commercial electrical systems

Compatibility

Designed as an OEM-style replacement or new-installation transformer for control circuit and low-voltage panel applications requiring an open type construction.

Installation Notes

Installation should be performed by a licensed electrician in accordance with applicable NEC requirements. De-energize and lock out all circuits before beginning work. Ensure the enclosure or panel housing the transformer provides adequate environmental protection, as the open type construction offers no built-in ingress protection. Verify input and output voltage ratings match the circuit requirements before energizing.

Technical Specifications

• Construction Type: Open Type
• Weight: 3 pounds
• UPC: 62398095280

Standard Information

• Brand: HAMMOND
• Manufacturer Part Number: VT57A