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
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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. Also known as control transformers. Choose a transformer with multiple output voltages to simultaneously power multiple devices that require different output voltages.
Voltage | For Fuse | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Input | Output | Power Output, VA | Ht. | Wd. | Dp. | Type | O'all Dia. | Specifications Met | Each | |
Single Phase—Screw Terminals Input and Output | ||||||||||
Step Down Voltage—Input Fuse Block | ||||||||||
| 120V AC/240V AC | 12V AC/24V AC | 50 | 4" | 3" | 3.8" | Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 000000 |
| 120V AC/240V AC | 12V AC/24V AC | 75 | 4" | 3" | 4" | Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 00000 |
| 120V AC/240V AC | 12V AC/24V AC | 100 | 4.4" | 3.4" | 4" | Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 000000 |
| 120V AC/240V AC | 12V AC/24V AC | 150 | 4.7" | 3.8" | 4.4" | Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 000000 |
| 120V AC/240V AC | 12V AC/24V AC | 250 | 5.3" | 4 1/2" | 4.6" | Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 000000 |
| 120V AC/240V AC | 12V AC/24V AC | 500 | 6" | 5.3" | 5.3" | Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 000000 |
Step Down Voltage—Output Fuse Block | ||||||||||
| 120V AC/240V AC | 12V AC | 50 | 3.1" | 3" | 3.8" | Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 00000 |
| 120V AC/240V AC | 12V AC | 75 | 3.1" | 3" | 4" | Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 00000 |
| 120V AC/240V AC | 12V AC | 100 | 3 1/2" | 3.4" | 4" | Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 000000 |
| 120V AC/240V AC | 12V AC | 150 | 3.8" | 3.8" | 4" | Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 000000 |
| 240V AC/480V AC | 12V AC | 50 | 3.1" | 3" | 3.8" | Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 00000 |
| 240V AC/480V AC | 12V AC | 150 | 3.8" | 3.8" | 4" | Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 000000 |
High-Inrush Panel-Mount AC to AC Transformers
These transformers can handle momentary high-inrush current associated with contactors, solenoids, and relays. Also known as control transformers.
Input and output fuse blocks are built-in and top-mounted to save panel space and allow quick installation.
Voltage | ||||||||
|---|---|---|---|---|---|---|---|---|
| Input | Output | Power Output, VA | Ht. | Wd. | Dp. | Specifications Met | Each | |
Step Down Voltage | ||||||||
| 120V AC/240V AC | 12V AC/24V AC | 50 | 2.8" | 3" | 3.3" | UL Listed, C-UL Listed | 0000000 | 000000 |
| 120V AC/240V AC | 12V AC/24V AC | 75 | 2.8" | 3" | 3.8" | UL Listed, C-UL Listed | 0000000 | 00000 |
| 120V AC/240V AC | 12V AC/24V AC | 100 | 3.1" | 3.4" | 3.8" | UL Listed, C-UL Listed | 0000000 | 000000 |
| 120V AC/240V AC | 12V AC/24V AC | 150 | 3.4" | 3.8" | 4.3" | UL Listed, C-UL Listed | 0000000 | 000000 |
| 120V AC/240V AC | 12V AC/24V AC | 250 | 4" | 4 1/2" | 4 1/2" | UL Listed, C-UL Listed | 0000000 | 000000 |
| 120V AC/240V AC | 12V AC/24V AC | 350 | 4" | 4 1/2" | 5.3" | UL Listed, CSA Certified | 0000000 | 000000 |
| 120V AC/240V AC | 12V AC/24V AC | 500 | 4.6" | 5.3" | 5.8" | UL Listed, C-UL Listed | 0000000 | 000000 |
| 120V AC/240V AC | 12V AC/24V AC | 750 | 4.7" | 5.3" | 7" | UL Listed, C-UL Listed | 0000000 | 000000 |
Voltage | For Fuse | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Input | Output | Power Output, VA | Ht. | Wd. | Dp. | Type | O'all Dia. | Specifications Met | Each | |
Step Down Voltage | ||||||||||
| 120V AC/240V AC | 12V AC/24V AC | 50 | 4" | 3" | 3.6" | UL Class CC Midget | 13/32" | UL Listed, C-UL Listed | 0000000 | 0000000 |
Circuit Board AC to AC Transformers
Convert AC voltages without taking up too much space on your circuit board. These transformers are smaller than those with electrical wiring. Solder pin terminals mount directly through circuit board holes.
For technical drawings and 3-D models, click on a part number.
Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Input | Output | Power Output, VA | Ht. | Wd. | Dp. | Pin Lg. | Specifications Met | Each | |
Single Phase—Solder Pin Terminals Input and Output | |||||||||
Step Down Voltage | |||||||||
| 115V AC/230V AC | 12V AC/24V AC | 1.1 | 1.3" | 1.4" | 1.1" | 0.23" | UL Recognized Component, C-UL Recognized Component | 0000000 | 000000 |
| 115V AC/230V AC | 12V AC/24V AC | 2.4 | 1.2" | 1.4" | 1.1" | 0.23" | UL Recognized Component, C-UL Recognized Component | 0000000 | 00000 |
| 115V AC/230V AC | 12V AC/24V AC | 6 | 1.3" | 1.6" | 1.3" | 0.23" | UL Recognized Component, C-UL Recognized Component | 0000000 | 00000 |
| 115V AC/230V AC | 12V AC/24V AC | 12 | 1.5" | 1.9" | 1.6" | 0.23" | UL Recognized Component, C-UL Recognized Component | 0000000 | 00000 |
| 115V AC/230V AC | 12V AC/24V AC | 20 | 1.4" | 2.3" | 1.9" | 0.23" | UL Recognized Component, C-UL Recognized Component | 0000000 | 00000 |
| 115V AC/230V AC | 12V AC/24V AC | 36 | 1.6" | 2.6" | 2.2" | 0.23" | UL Recognized Component, C-UL Recognized Component | 0000000 | 00000 |
Low-Current AC to AC Transformers
Power low-voltage devices such as alarms and sensors.
Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Input | Output | Power Output, VA | Input Plug Type (NEMA Style) | Ht. | Wd. | Dp. | Specifications Met | Each | |
Single Phase—Plug Input and Screw Terminals Output | |||||||||
Step Down Voltage | |||||||||
| 120V AC | 12V AC | 20 | Two Prong (1-15) | 3.2" | 2.6" | 1.9" | UL Listed | 0000000 | 000000 |