Choosing a control transformer for an industrial panel comes down to input voltage, output voltage, and capacity. You need a dependable 115V supply for relays, contactors, and indicator lights, but you also want to avoid paying for VA you won't use. The Hammond PT50MLI is a used, bulk-listed control transformer that handles this exact job. With a 50VA rating and a primary that accepts 208, 230, or 460 volts, it steps down to 115V and is listed at $44.99.
Hammond PT50MLI - BULK Industrial Control Transformer 50VA 208/230/460V to 115V
This 50VA control transformer steps down 208, 230, or 460 volts to 115 volts. It's a used, bulk unit with a Hammond nameplate and a price of $44.99.
Quick Verdict
The Hammond PT50MLI is a solid pick if your control circuit draws 50VA or less and you're okay with a used component. The price is attractive for a 50VA industrial transformer, and the multi-voltage primary covers the most common North American line voltages. The used condition is the main thing to weigh, but for a transformer with no moving parts, a quick continuity check before installation is a sensible precaution.
Who It Suits
This transformer fits small control panels, machine interlock circuits, and other light-duty control loads. The 50VA capacity is enough for a few relays, a contactor coil, and a pilot light, but not for large solenoids or multiple motor starters. If your application stays within that envelope, the PT50MLI gives you a standard 115V control bus from a 208/230/460V line. It also works well as a bench spare for prototyping small control circuits.
What Stands Out from the Listed Details
The standout feature in the listing is the primary voltage flexibility. The transformer accepts 208, 230, or 460 volts on the primary and delivers 115 volts on the secondary, which covers the most common industrial supply voltages. The 50VA rating is clearly stated, so you know its limit up front. At $44.99, the used price is a reasonable entry point for a Hammond transformer, and the bulk designation keeps the purchase focused on the transformer itself.
Meaningful Trade-offs
The main trade-off is condition: this is a used, bulk unit. There's no retail packaging, and the previous service history isn't available. The 50VA capacity is also a firm ceiling-if your control load grows beyond that, you'll need a larger transformer. Because the listing gives the primary voltage rating as 460V, it's worth double-checking the tap connections if you plan to use 208V or 230V.
Bottom Line
If you need a compact 115V control supply from a 208/230/460V source, the Hammond PT50MLI is a practical, low-cost option. Accept the used condition, stay within the 50VA limit, and this transformer is a straightforward way to power a small control circuit. At $44.99, it's a price that makes sense for a component like this.
