Square D 9070TF300D5 Control Transformer 300 Va

Product Description

The SQUARE D 9070TF300D5 is a single-phase control transformer rated at 300 VA, designed to step down line voltage to the low-voltage control circuits used in industrial machinery, HVAC equipment, and motor control panels. It features a top-mount fuse block, providing fused secondary protection in a convenient, accessible location. At 9.49 pounds and with a compact footprint, it mounts securely in enclosures or control panels where space and protection requirements must both be met. Electricians and controls technicians install this unit when a dedicated, isolated control voltage source is required for relay logic, PLC inputs, or contactor coils.

This transformer is suited for use in commercial and light industrial applications where a reliable 300 VA single-phase control power source is needed. Typical installations include motor control centers, machine tool panels, HVAC control cabinets, and automated process equipment. The top-mount fuse block configuration makes fuse inspection and replacement straightforward during scheduled maintenance without disturbing the transformer wiring.

Key Features

• 300 VA single-phase rating supports a broad range of control circuit loads
• Top-mount fuse block provides fused secondary protection with easy fuse access
• Compact dimensions suit standard control panel and enclosure installations
• 9.49-pound construction reflects a robust core and winding assembly

Compatibility

Designed as an OEM-style replacement or upgrade control transformer for single-phase low-voltage control circuit applications in industrial and commercial electrical panels.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the NEC and applicable local codes. De-energize and lock out the panel or enclosure before mounting or wiring the transformer. Verify that the primary and secondary voltage ratings match the existing control circuit design before making connections. Do not exceed the 300 VA nameplate rating, as overloading the secondary can damage the transformer and connected control components.