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99 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

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.

Single Phase—Screw Terminals Input and Output

Transformer

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
230V AC/460V AC/575V AC	95V AC/115V AC	50	2.8"	3"	3.3"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC/575V AC	95V AC/115V AC	100	3"	3.4"	3.8"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC/575V AC	95V AC/115V AC	150	3.4"	3.8"	4.3"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC/575V AC	95V AC/115V AC	250	4"	4 1/2"	4.6"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC/575V AC	95V AC/115V AC	350	4"	4 1/2"	5.3"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC/575V AC	95V AC/115V AC	500	4.6"	5.3"	5.8"	UL Listed, C-UL Listed	0000000	000000
240V AC/480V AC	120V AC	50	2.6"	3"	3.1"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	100	2.9"	3.4"	3.3"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	150	3.2"	3.8"	3.6"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	250	3.2"	3.8"	5.3"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	350	3.8"	4 1/2"	5.1"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	500	3.8"	4 1/2"	5 1/2"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	750	4 1/2"	5.3"	5.6"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	1,000	4 1/2"	5.3"	6.3"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	1,500	6.2"	7.1"	5.9"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	2,000	5.4"	7"	8.4"	UL Listed, C-UL Listed	0000000	000000

Single Phase—Screw Terminals Input and Output with Fuse Block

Transformer with Input and Output Fuse Block

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
230V AC/460V AC/575V AC	95V AC/115V AC	100	4.4"	3.4"	4.1"	UL Class CC Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
240V AC/480V AC	120V AC	50	4"	3"	3.1"	UL Class CC Midget	13/32"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	100	4.2"	3.4"	3.3"	UL Class CC Midget	13/32"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	150	4 1/2"	3.8"	3.6"	UL Class CC Midget	13/32"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	250	4 1/2"	3.8"	5.3"	UL Class CC Midget	13/32"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	350	5.1"	4 1/2"	5.1"	UL Class CC Midget	13/32"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	500	5.1"	4 1/2"	5 1/2"	UL Class CC Midget	13/32"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	750	5.8"	5.3"	5.6"	UL Class CC Midget	13/32"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	1,000	5.8"	5.3"	6.3"	UL Class CC Midget	13/32"	UL Listed, CSA Certified	0000000	000000
240V AC/480V AC	120V AC	1,500	7.7"	6.8"	8.1"	UL Class CC Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
240V AC/480V AC	120V AC	2,000	7.7"	6.8"	7.8"	UL Class CC Midget	13/32"	UL Listed, CSA Certified	0000000	000000

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. Also known as control transformers.

Isolated coils protect equipment from input voltage spikes.

When wired for constant voltage, transformers filter out voltage spikes and electrical noise.

Voltage
Input	Output	Power Output, VA	Ht.	Wd.	Dp.	Features	Specifications Met		Each
Single Phase—Screw Terminals Input and Output
Step Down Voltage
120V AC/240V AC	24V AC	50	2.8"	3"	3.3"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed, CE Marked	0000000	000000
120V AC/240V AC	24V AC	75	2.8"	3"	3.8"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed	0000000	000000
120V AC/240V AC	24V AC	100	3.1"	3.4"	3.8"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed, CE Marked	0000000	000000
120V AC/240V AC	24V AC	150	3.4"	3.8"	4.3"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed	0000000	000000
120V AC/240V AC	24V AC	250	4"	4 1/2"	4"	Covered Terminals, Isolated Coils	UL Listed, CSA Certified, CE Marked	0000000	000000
120V AC/240V AC	24V AC	500	4.7"	5.3"	5.8"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed	0000000	000000
120V AC/240V AC	24V AC	1,000	5.7"	7"	6.6"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed, CE Marked	0000000	000000
240V AC/480V AC	120V AC	50	2.8"	3"	3.3"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed, CE Marked	0000000	00000
240V AC/480V AC	120V AC	75	2.8"	3"	3.8"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed, CE Marked	0000000	00000
240V AC/480V AC	120V AC	100	3.1"	3.4"	3.8"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed, CE Marked	0000000	000000
240V AC/480V AC	120V AC	250	4"	4 1/2"	4.6"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed, CE Marked	0000000	000000
240V AC/480V AC	120V AC	350	4"	4 1/2"	5.3"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed	0000000	000000
240V AC/480V AC	120V AC	500	4.7"	5.3"	5.8"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed, CE Marked	0000000	000000
240V AC/480V AC	120V AC	750	4.7"	5.3"	7"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed, CE Marked	0000000	000000
240V AC/480V AC	120V AC	1,000	5.7"	7"	6.6"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed, CE Marked	0000000	000000
240V AC/480V AC	120V AC	1,500	5.7"	7"	7.6"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed, CE Marked	0000000	000000
240V AC/480V AC	120V AC	2,000	6"	6.8"	8.1"	Covered Terminals, Isolated Coils	UL Listed, C-UL Listed, CE Marked	0000000	000000
Step Down/Constant Voltage
230V AC/460V AC/575V AC	24V AC/115V AC/230V AC	250	4"	4 1/2"	4.8"	Covered Terminals	UL Listed, C-UL Listed, CE Marked	0000000	000000
230V AC/460V AC/575V AC	24V AC/115V AC/230V AC	300	4"	4 1/2"	5.3"	Covered Terminals	UL Listed, C-UL Listed, CE Marked	0000000	000000
230V AC/460V AC/575V AC	24V AC/115V AC/230V AC	350	4 1/2"	5.3"	5.4"	Covered Terminals	UL Listed, C-UL Listed, CE Marked	0000000	000000
230V AC/460V AC/575V AC	24V AC/115V AC/230V AC	500	4 1/2"	5.3"	6.6"	Covered Terminals	UL Listed, C-UL Listed, CE Marked	0000000	000000
230V AC/460V AC/575V AC	24V AC/115V AC/230V AC	750	6"	6.4"	7.4"	Covered Terminals	UL Listed, C-UL Listed, CE Marked	0000000	000000
230V AC/460V AC/575V AC	24V AC/115V AC/230V AC	1,000	6.3"	6.8"	7.8"	Covered Terminals	UL Listed, C-UL Listed, CE Marked	0000000	000000

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

Transformer with Input Fuse Block

Transformer with Output Fuse Block

Transformer with Input and Output Fuse Block

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.

Input and output fuse blocks are built-in and top-mounted to save panel space and allow quick installation.

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
Step Down Voltage—Input and Output Fuse Block
240V AC/480V AC	120V AC	50	4"	3"	3.8"	Midget	13/32"	UL Listed, C-UL Listed	0000000	00000
240V AC/480V AC	120V AC	75	4"	3"	4"	Midget	13/32"	UL Listed, C-UL Listed	0000000	00000
240V AC/480V AC	120V AC	100	4.3"	3.4"	4"	Midget	13/32"	UL Listed, C-UL Listed	0000000	00000
240V AC/480V AC	120V AC	150	4.7"	3.8"	4"	Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
240V AC/480V AC	120V AC	250	5.3"	4 1/2"	4.4"	Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
240V AC/480V AC	120V AC	500	6"	5.3"	6.1"	Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC	24V AC/115V AC	50	3.9"	3"	3 1/2"	UL Class CC Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC	24V AC/115V AC	75	4.2"	3.4"	3.6"	UL Class CC Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC	24V AC/115V AC	100	4.2"	3.8"	3.6"	UL Class CC Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC	24V AC/115V AC	150	4.7"	3.8"	4"	UL Class CC Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC	24V AC/115V AC	200	5.3"	4 1/2"	4.4"	UL Class CC Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC	24V AC/115V AC	250	4.1"	4 1/2"	4.4"	UL Class CC Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC	24V AC/115V AC	300	5.9"	5.3"	5.2"	UL Class CC Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC	24V AC/115V AC	350	5.9"	5.3"	5.2"	UL Class CC Midget	13/32"	UL Listed, C-UL Listed	0000000	000000
230V AC/460V AC	24V AC/115V AC	500	6"	5.3"	5.7"	UL Class CC Midget	13/32"	UL Listed, C-UL Listed	0000000	000000

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.

Voltage
Input	Output	Power Output, VA	Ht.	Wd.	Dp.	For DIN Rail Size, mm	Specifications Met		Each
Single Phase—Screw Terminals Input and Output
Step Down Voltage
230V AC	24V AC	63	3 1/2"	3.4"	3.9"	35	UL Recognized Component, C-UL Recognized Component, CE Marked	0000000	0000000
230V AC	24V AC	100	4"	3.4"	3.9"	35	UL Recognized Component, C-UL Recognized Component, CE Marked	0000000	000000
230V AC	24V AC	160	4.1"	3.9"	4.2"	35	UL Recognized Component, C-UL Recognized Component, CE Marked	0000000	000000
230V AC	24V AC	250	4.7"	3.9"	4.2"	35	UL Recognized Component, C-UL Recognized Component, CE Marked	0000000	000000
230V AC, 460V AC	115V AC	63	3 1/2"	3.4"	3.9"	35	UL Recognized Component, C-UL Recognized Component, CE Marked	0000000	000000
230V AC, 460V AC	115V AC	100	4"	3.4"	3.9"	35	UL Recognized Component, C-UL Recognized Component, CE Marked	0000000	000000
230V AC, 460V AC	115V AC	160	4.1"	3.9"	4.2"	35	UL Recognized Component, C-UL Recognized Component, CE Marked	0000000	000000
230V AC, 460V AC	115V AC	250	4.7"	3.9"	4.2"	35	UL Recognized Component, C-UL Recognized Component, CE Marked	0000000	00000000
230V AC, 460V AC	115V AC	400	4 1/2"	4.8"	4.8"	35	UL Recognized Component, C-UL Recognized Component, CE Marked	0000000	00000000
230V AC, 460V AC	115V AC	500	5.3"	4.8"	4.8"	35	UL Recognized Component, C-UL Recognized Component, CE Marked	0000000	00000000

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. Also known as control transformers, they are used in heating, ventilation, and air conditioning control circuits.

Voltage
Input	Output	Power Output, VA	Wire Lead Lg.	Ht.	Wd.	Dp.	Specifications Met		Each
Single Phase—Wire Leads Input and Output
Step Down Voltage
120V AC, 208V AC, 240V AC	24V AC	40	6"	2.8"	3.7"	2 1/2"	UL Recognized Component	0000000	000000
120V AC	24V AC	40	6"	2.8"	3.7"	2 1/2"	UL Recognized Component	0000000	00000
208V AC, 240V AC	24V AC	40	6"	2.8"	3.7"	2 1/2"	UL Recognized Component	0000000	00000