Transformer Boxes | McMaster-Carr

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Output Voltage

Input Voltage

Power Output

Frequency

Electrical Phase

Transformer Voltage Function

Constant

Step Down

Step Up

Output Electrical Connection

Mounting Location

Printed Circuit Board

Height

Input Electrical Connection

Bus Bar

Terminal

Wire Leads

Labeled Primary Voltage

Labeled Power Output

Certification

C-UL Recognized Component

UL Listed

UL Recognized Component

Depth

Width

Environment

RoHS

Compliant with Exemptions

Not Compliant

DFARS Specialty Metals

Exempt

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

EAR99

Input Connection Type

Hardwire

Plug In

Labeled Secondary Voltage

Output Connection Type

Output Socket Style

Plug Adapter NEMA Type

Plug Adapter Style

237 Products

About AC to AC Voltage Transformers

For single-phase equipment, use this formula to find power output: VA = Volts × Amps

For three-phase equipment, use this formula to find power output: VA = Volts × Amps × 1.73

Enclosed Isolating AC to AC Transformers

These transformers have isolated primary and secondary coils to protect your sensitive equipment from input voltage spikes.

Enclosed Step-Up/Step-Down
AC to AC Transformers

Improve the efficiency of your equipment—wire these transformers to step your input voltage up or down by as much as 20%.

Enclosed Voltage-Stabilizing AC to AC Transformers

Protect equipment from electromagnetic interference and maintain power during three-millisecond power dips.

DIN-Rail/Panel-Mount High-Inrush
AC to AC Transformers

Use with DIN-rail to install wherever you need these transformers or mount them to a panel. They can handle momentary high-inrush current associated with equipment start-up.

Outlet Box/Panel-Mount
High-Inrush AC to AC Transformers

Use the included mounting plate to mount these transformers to a panel. They can handle momentary high-inrush current associated with equipment start-up.

Touch-Safe High-Inrush
Panel-Mount AC to AC Transformers

Prevent accidental contact with live electrical connections—the screw terminals are covered or recessed. These transformers can handle momentary high-inrush current associated with contactors, solenoids, and relays.

High-Inrush Panel-Mount AC to AC Transformers

These transformers can handle momentary high-inrush current associated with contactors, solenoids, and relays.

Harsh Environment High-Inrush
Panel-Mount AC to AC Transformers

Sealed coils protect against dust, dirt, oil, and moisture. These transformers can handle momentary high-inrush current associated with contactors, solenoids, and relays.