Square D 9070TF50D20 Control Transformer 50 Va

Product Description

The SQUARE D 9070TF50D20 is a single-phase, 50 VA control transformer designed to step down line voltage to a lower control-circuit voltage in industrial and commercial electrical systems. It features a top-mounted fuse block, providing overcurrent protection directly at the secondary output without requiring a separate fuse holder. The transformer is rated for a maximum temperature rise of 131 degrees F, indicating suitability for continuous-duty control applications. Licensed electricians and industrial maintenance technicians install this transformer as part of motor control centers, HVAC control panels, and machine control circuits.

This transformer is suited for commercial and light industrial applications where a reliable, fused 50 VA control circuit is required. Common installation scenarios include motor starters, contactor coil circuits, and HVAC unit control panels that require a dedicated step-down transformer with integral secondary fuse protection. The top-mount fuse block design keeps the fuse accessible for fast replacement during routine service or troubleshooting without disturbing the transformer wiring.

Key Features

• 50 VA single-phase rating for low-power control circuit applications
• Top-mounted fuse block provides integral secondary overcurrent protection
• 131 degrees F temperature rise rating supports continuous-duty operation
• Compact footprint at 7.3 inches length, 6.4 inches width, and 5.4 inches height
• Self-contained fuse location reduces panel wiring complexity

Compatibility

Designed as an OEM-style replacement or new-installation control transformer for single-phase commercial and industrial control panel applications requiring a 50 VA fused secondary.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the National Electrical Code (NEC). De-energize and lock out the panel or enclosure before mounting the transformer or making any wiring connections. Verify that primary voltage, secondary voltage, and VA load requirements match the application before energizing. Ensure the fuse rating installed in the top-mount fuse block is sized appropriately for the secondary circuit load.