Phase Transformers | McMaster-Carr

	Power Output Power Output

0.25-0.5
hp

0.5-1 hp

1hp

	Frequency Frequency

50Hz

60Hz

	Transformer Voltage Function Transformer Voltage Function

Constant

Phase

	Output Wire Connection Type Output Wire Connection Type

Terminal Block

Wire Leads

	Input Wire Connection Type Input Wire Connection Type

Terminal Block

Wire Leads

	Width Width

	Depth Depth

10"

11"

12"

	Height Height

13"

18"

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

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11 Products

AC to AC Phase Transformers for Light Loads

Also known as static converters, these transformers allow your motor to run at up to 70% of its normal power. Use them in drill presses, mills, and grinders. They generate three-phase output power from a single-phase input. When wired for constant voltage, transformers filter out voltage spikes and electrical noise.

Select a transformer so the power output of your largest motor falls within the output range. When using multiple motors, start the largest motor first, then start smaller motors individually.

Voltage
Input	Output	Power Output, hp	Ht.	Wd.	Dp.		Each
Single Phase Input/Three Phase Output—Terminal Block Input and Output
Phase/Constant Voltage
220V AC	220V AC	0.25-0.5	7"	6.5"	3"	0000000	0000000
220V AC	220V AC	0.5-1	7"	6.5"	3"	0000000	000000
220V AC	220V AC	1-3	7"	6.5"	3"	0000000	000000
220V AC	220V AC	3-5	7"	6.5"	3"	0000000	000000
220V AC	220V AC	5-7.5	7"	6.5"	3"	0000000	000000
220V AC	220V AC	7.5-10	7"	6.5"	3"	0000000	000000

High-Efficiency AC to AC Phase Transformers for Light Loads

Run your motors at 100% of their normal power. These transformers generate three-phase output power from a single-phase input. Also known as rotary converters.

Select a transformer with a power output that exceeds but comes closest to the power requirement of your largest motor. When using multiple motors, start the largest motor first. Then start smaller motors individually until their total horsepower requirement is no more than twice the power output of the transformer.

Voltage
Input	Output	Power Output, hp	Ht.	Wd.	Dp.		Each
Single Phase Input/Three Phase Output—Wire Leads Input and Output
Phase/Constant Voltage
220V AC	220V AC	1	13"	12"	10"	0000000	0000000
220V AC	220V AC	3	13"	13"	11"	0000000	00000000
220V AC	220V AC	5	13"	13"	11"	0000000	00000000
220V AC	220V AC	7.5	18"	14"	12"	0000000	00000000
220V AC	220V AC	10	18"	14"	12"	0000000	00000000