Square D 9070TF50D3 Control Transformer 50 Va 1 Phase

Product Description

The SQUARE D 9070TF50D3 is a single-phase control transformer rated at 50 VA, designed to step down line voltage to a safe control-circuit voltage for industrial and commercial control systems. It features a top-mounted fuse block, providing fused secondary protection in a compact, serviceable package. The unit is built for panel mounting and is intended for installation by licensed electricians or qualified control-panel technicians. Rated for a 131 degrees F temperature rise, this transformer is sized for continuous-duty control applications where reliable low-voltage power to contactors, relays, and PLCs is required.

This transformer is commonly used in industrial control panels, HVAC rooftop unit control circuits, motor control centers, and commercial building automation systems. It is appropriate for any application requiring a fused, step-down control transformer in a single-phase configuration. The top-mount fuse block allows fuse inspection and replacement without removing the transformer from the panel, making it a practical choice for maintenance-intensive environments.

Key Features

• 50 VA single-phase rating suitable for control-circuit loads including relays, contactors, and low-voltage controls
• Top-mounted fuse block provides fused secondary protection with accessible fuse replacement
• 131 degrees F temperature rise rating supports continuous-duty operation
• Compact footprint at 8 inches length, 7.1 inches width, and 6.8 inches height for standard panel installation
• Ships as a single unit with no minimum order restriction beyond one piece

Compatibility

Designed as an OEM-style replacement or new-installation control transformer for single-phase industrial control panels and commercial HVAC control circuits requiring a top-mount fused transformer at 50 VA.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. De-energize and lock out the panel before mounting or wiring the transformer. Verify that the primary voltage supply matches the transformer primary tap before energizing. Inspect the fuse block and install the correct fuse rating for the secondary circuit before returning the panel to service.