The Siemens MT0100B is a 100 VA industrial control transformer that accepts a 240 VAC or 480 VAC supply and delivers a 24 VAC secondary, providing a compact, isolated source of low‑voltage power for control circuits in automation equipment. DigiKey lists MT0100B as a chassis‑mount unit, while Grainger shows wall‑mount variants and notes that some MT0100B configurations include a factory‑installed secondary fuse. As part of Siemens’ MT family, this transformer is designed to power relays, PLCs, sensors, and other control components in industrial panels and equipment.
