Schneider Electric's Square D 9070TF300D1 is a 1‑phase industrial control transformer (Type TF) rated at 300 VA, with a primary input of 240/480 VAC and a secondary output of 120 VAC at 50/60 Hz. It is used to power low-voltage control circuits—such as relays, contactors, and other panel-mounted controls—from higher-voltage sources in industrial equipment. The 9070TF300D1 model is part of the 9070 family of Square D transformers and is designed for standard control-transformer installations in industrial electrical panels.
