Panel Power Supplies | McMaster-Carr

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	Output Voltage Output Voltage

	Input Voltage Input Voltage

100-240V AC

120V AC

	Mounting Location Mounting Location	Show

Panel

	Mounting Location Mounting Location	Hide

	Output Power Output Power

	Power Output Power Output

20VA

30VA

	Electrical Phase Electrical Phase

Single

	Height Height

0.9"

2.2"

	Input Current Input Current

0.25 A @ 115 V AC

0.1 A @ 230 V AC

	Input Frequency Input Frequency

50Hz

60Hz

	Transformer Type Transformer Type

AC to AC

	Input Connection Type Input Connection Type

	Hardwire

	Output Current Output Current

	Transformer Voltage Function Transformer Voltage Function

Step Down

	Wire Connection Type Wire Connection Type

	Quick-Disconnect Terminals

	Output Connection Type Output Connection Type

	Hardwire

	Frequency Frequency

60Hz

	Maximum Inrush Current Maximum Inrush Current

15 A @ 115 V AC

30 A @ 230 V AC

	Input Wire Connection Type Input Wire Connection Type

Wire Leads

	Width Width

1.9"

2.3"

	Depth Depth

2.7"

2.9"

	IEC Style IEC Style

	C14

	Efficiency Efficiency

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

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6 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

Hardwire this transformer into your panel. Use it to power low-voltage devices such as alarms and sensors. It cannot be sold to California due to local energy efficiency requirements.

Single Phase—Wire Leads Input and Screw Terminals Output
Input Voltage	Output Voltage (Power Output, VA)	Ht.	Wd.	Dp.	Cannot Be Sold To		Each
Step Down Voltage
120V AC	8V AC (20), 16V AC (30), 24V AC (30)	2.2"	2.3"	2.9"	CA	0000000	000000

EMI-Filtering IEC Connectors with Integrated Power Supply

IEC C14

Quick-Disconnect Terminals

Change AC voltage to DC voltage and bring power to electronic devices while protecting them from harmful electromagnetic interference (EMI). Even with their built-in power supply, these connectors have the same overall footprint as those without a power supply. All are for use with standard IEC power cords. Commonly used to convey power from wall outlets, you won’t have to wire your devices to an external power source. Instead, wire these connectors into your device with the terminals on the back of each connector.

For fast wire connections, these connectors have quick-disconnect terminals. The terminals slide together with the quick-disconnect terminals on your wiring and are easily disconnected by hand, but still provide a strong hold.

All of these connectors use switching regulation, which means they produce the stated voltage despite fluctuations in your input power and the power being drawn by your system, and they won’t become too hot. If you exceed the maximum voltage or load, the connectors will shut down to protect both the power supply and the connected device. They also meet the voltage requirements for use in a SELV (separated extra low voltage) circuit.

These connectors meet U.S. and international standards for safety. They also meet UL 94 V-0, which means they self-extinguish within 10 seconds if they catch fire, and won’t spread the fire by dripping. All have Class I shock protection—they're insulated and have a protective ground to prevent electrical shocks.

Maximum output noise is also known as ripple noise. When power supplies convert AC voltage to DC voltage, some noise from the AC voltage will carry into the output. While this noise won't affect most applications, it can interfere with other signals in extremely sensitive audio equipment and high-precision measuring and testing equipment. The lower the output noise, the less interference it creates.

Power factor and efficiency give you a sense for how efficiently these connectors draw AC power and convert it into DC power, which ultimately affects your operating cost. The closer the power factor is to 1, and the higher the efficiency percentage, the lower the operating cost. The more efficient the power supply, the cooler it runs.

For technical drawings and 3-D models, click on a part number.

	Output						For Panel Cutout
IEC Style	Voltage	Current, A	Power, W	Max. Output Noise Peak-to-Peak, mV DC	Power Factor	Efficiency	Ht.	Wd.	Temp. Range, °F	Protections Provided		Each
Screw-On Male Receptacles
Single Phase—100V AC-240V AC Input Voltage
C14	3.3V DC	1.51	5	60	0.6 @ 115 V AC, 0.45 @ 230 V AC	76% @ 230 V AC	0.9"	1.2"	-10° to 140°	Overcurrent, Overload, Overvoltage	00000000	000000
C14	5V DC	1	5	60	0.6 @ 115 V AC, 0.45 @ 230 V AC	80% @ 230 V AC	0.9"	1.2"	-10° to 140°	Overcurrent, Overload, Overvoltage	00000000	00000
C14	12V DC	0.42	5	60	0.6 @ 115 V AC, 0.45 @ 230 V AC	81% @ 230 V AC	0.9"	1.2"	-10° to 140°	Overcurrent, Overload, Overvoltage	00000000	00000
C14	15V DC	0.333	5	60	0.6 @ 115 V AC, 0.45 @ 230 V AC	81% @ 230 V AC	0.9"	1.2"	-10° to 140°	Overcurrent, Overload, Overvoltage	00000000	00000
C14	24V DC	0.21	5	60	0.6 @ 115 V AC, 0.45 @ 230 V AC	84% @ 230 V AC	0.9"	1.2"	-10° to 140°	Overcurrent, Overload, Overvoltage	00000000	00000

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About AC to AC Voltage Transformers

Low-Current Panel-Mount AC to AC Transformers

EMI-Filtering IEC Connectors with Integrated Power Supply