Choosing an industrial control transformer usually comes down to three questions: what input voltage are you stepping down, how much power does the control circuit need, and how much do you want to spend. The four options here span a wide price spread, from $44.99 to $450, so the decision can be as much about budget as about electrical fit.
Quick take
- The Hammond PT50MLI is the lowest-priced option at $44.99, a used 50VA transformer for 208/230/460V to 115V.
- The Emerson SolaHD E150 is the open-box unit at $79.95, with 150VA and a 240x480V primary to 120V secondary.
- The Square D 9070TF100D1 is a new-condition option at $175 for a model-specific industrial control transformer.
- The Eaton C5000K2A is the top-priced unit at $450, described as new with a 220-240V / 440-480V primary and 110-120V secondary.
Listed price comparison
| Product | Listed price | Price bar |
|---|---|---|
| NEW EATON C5000K2A INDUSTRIAL CONTROL TRANSFORMER VA: 5000 50/60Hz | USD 450.00 | |
| Hammond PT50MLI - BULK Industrial Control Transformer 50VA 208/230/460V to 115V | USD 44.99 | |
| NEW Emerson SolaHD E150 Industrial Control Transformer 150VA 240x480V to 120V | USD 79.95 | |
| 9070TF100D1 Square D Industrial Control Transformer New USA | USD 175.00 |
Decision matrix
| Product | Price position | Best fit if... |
|---|---|---|
| Eaton C5000K2A | Highest listed price | You want a new unit with 220-240V / 440-480V primary coverage and 110-120V secondary output. |
| Hammond PT50MLI | Lowest listed price | You want a low-cost 50VA step-down to 115V from 208/230/460V. |
| Emerson SolaHD E150 | Below $100 | You want 150VA capacity with 240x480V primary and 120V secondary. |
| Square D 9070TF100D1 | Between $100 and $200 | You already know the 9070TF100D1 fits and want new condition. |
Product notes
Eaton C5000K2A Industrial Control Transformer
The Eaton C5000K2A is the highest-priced option here. It is described as new and includes both 220-240V and 440-480V primary input coverage, stepping down to a 110-120V secondary. That makes it useful if your installation has either voltage range on the line side. The limitation is simple: it costs more than any other unit in this set, so you are paying for new condition and dual-range input coverage rather than the lowest upfront price.
Hammond PT50MLI - BULK Industrial Control Transformer 50VA 208/230/460V to 115V
The Hammond PT50MLI is the cheapest unit in the group by a wide margin. It is specified as a 50VA transformer with 208/230/460V primary and 115V secondary, which is a common control-voltage setup. It is also the only used unit in the group, so the condition is the thing to weigh against the price. If you want a low-cost option and can accept a used device, this is the easy starting point.
Emerson SolaHD E150 Industrial Control Transformer 150VA 240x480V to 120V
The Emerson SolaHD E150 lands below $100 and offers a bigger 150VA rating than the 50VA Hammond unit. It is a New - Open Box unit, so the transformer is described as new but the package has been opened. The specified coverage includes a 240x480V primary, a 120V secondary, and additional 230x460V/220x440V primary and 115V/110V secondary options. That flexibility plus the moderate price makes it a solid middle-ground pick.
Square D 9070TF100D1 Industrial Control Transformer
The Square D option is identified by the 9070TF100D1 model number and is listed as new. It sits between the SolaHD and Eaton units on price, making it the choice for someone who already knows the 9070TF100D1 is the right transformer. The trade-off is that it does not land at the low end of the price range, so a buyer focused purely on the lowest listed cost would look toward the Hammond unit instead. If you are model-specific and want new condition, this is the unit to focus on.
Final recommendation by use case
- Lowest upfront cost: The Hammond PT50MLI is the least expensive unit and gives you a 50VA transformer specified for 208/230/460V to 115V, with used condition as the trade-off.
- More VA below $100: If you want 150VA in a New - Open Box unit, the Emerson SolaHD E150 offers 240x480V-to-120V coverage without reaching the higher prices in this group.
- New model-specific choice: The Square D 9070TF100D1 is the new-condition option to consider when you already have the model number in mind.
- New dual-range primary option: The Eaton C5000K2A is the new unit that covers both 220-240V and 440-480V primaries, but it carries the highest listed price.
