UL 508 Power Supplies | McMaster-Carr

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38 Products

Heavy Duty DIN-Rail-Mount Power Supplies

Single Phase, Screw-Clamp Terminal

Input and Output Connection

Single Phase, Spring-Clamp-Terminal

Input and Output Connection

Single Phase, Spring-Clamp-Terminal

Input and Output Connection—With

Output Voltage Signal

Three Phase, Screw-Clamp Terminal

Input and Output Connection

For critical systems, demanding environments, and any application where downtime is not an option, these reliable power supplies convert AC to DC voltage to keep power flowing. They mount onto DIN rails, which are usually found inside electrical panels and cabinets. Made with the highest-quality internal components, they're designed to last in marine, heavy industrial, and other tough environments. Power supplies with spring-clamp terminals connect quicker and hold firmer than screw-style terminals.

These power supplies maintain a stable output, even in facilities with electrical noise, voltage fluctuation, or poor power quality. Compared to standard power supplies, they require less start-up current, which further improves stability. All 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. Some are also SEMI F47 compliant, meaning they meet standards for maintaining output voltage when input voltage dips. This is commonly known as voltage sag immunity.

For many of these power supplies, exceeding the maximum voltage, temperature, or load will cause the power supply to shut down to protect both the power supply and the connected equipment. Some power supplies meet the voltage requirements for use in a PELV (protected extra low voltage) circuit; some also meet the requirements for use in SELV (separated extra low voltage) circuits.

Rated IP20, these power supplies prevent your fingers from touching internal components and accidentally shocking yourself. With various domestic and international certifications, such as UL listing, CE marking, and TUV Rheinland certification, these power supplies meet stringent safety standards. Some meet additional standards for marine vessels classed by DNV-GL and Lloyd's Register.

Power supplies with an NEC Class 2 output limit the risk of electrical shock should something fail inside the power supply.

Output Voltage Signal—Power supplies with an output voltage signal send a signal that indicates the status of their output voltage, so you know if your power supply isn't working correctly. Configure them to light up a panel or activate an alarm when voltage drops, or connect them to a PLC for remote system monitoring.

Output Peak Current—Power supplies with an output peak current briefly boost power above their maximum operating current for starting motors, actuating solenoid valves, and other applications that require a higher starting current than their operating current. All of this means you get a more powerful power supply in a compact size.

Maximum Output Noise Peak-to-Peak—Maximum output noise is also known as ripple noise. The lower the value, the less interference the power supply creates. For most applications, a value over 100mVpp isn’t a problem. However, when using to power extremely sensitive electronics, such as audio equipment and high-precision measuring and testing equipment, you’ll want an output noise around 5mVpp or less.

Power Factor @ Voltage—Power factor shows how effectively a power supply draws AC power from the main electrical supply. The higher the power factor—up to a maximum score of 1—the lower your operating cost.

Efficiency @ Voltage—Efficiency describes how good a power supply is at converting the AC power it draws from your main electrical supply into DC power. High-efficiency power supplies cost less money to operate and produce less heat, meaning cooler temperatures in your electrical cabinet.

	Output
	Voltage, V DC	Voltage Adjustment Range, V DC	Current, amp	Peak Current, amp	Max. Noise Peak-to-Peak, mV DC	Power Factor @ Voltage	Efficiency @ Voltage	For Extra-Low Voltage Circuit Type	Low-Voltage Output Protection	Enclosure Rating		Each
Single Phase—100-240V AC Input Voltage







				Screw-Clamp Terminal Input and Output Connection

				5	4.5 to 5.75	3	3.6	60	0.42 @ 230V AC	77% @ 230V AC	PELV	NEC Class 2	IP20	7009K31	000000


				5	4.5 to 5.75	5	6	30	0.43 @ 230V AC	79% @ 230V AC	PELV	NEC Class 2	IP20	3719N105	00000
				12	10.8 to 13.8	1.2	1.44	50	0.42 @ 230V AC	77% @ 230V AC	PELV	NEC Class 2	IP20	7009K32	00000
				12	10.8 to 13.8	2.5	3	30	0.42 @ 230V AC	82% @ 230V AC	PELV	NEC Class 2	IP20	7009K33	00000
				12	10.8 to 13.8	4.5	5.4	150	0.46 @ 230V AC	85% @ 130V AC	PELV	NEC Class 2	IP20	3719N108	000000
				24	21.6 to 27.6	0.65	0.78	30	0.42 @ 230V AC	80% @ 230V AC	PELV	NEC Class 2	IP20	7009K34	00000
				24	21.6 to 27.6	1.3	1.56	30	0.42 @ 230V AC	86% @ 230V AC	PELV	NEC Class 2	IP20	7009K35	00000
				24	21.6 to 27.6	2.5	3	50	0.45 @ 230V AC	88% @ 230V AC	PELV	NEC Class 2	IP20	7009K36	00000
				24	21.6 to 27.6	5	6	150	0.94 @ 230V AC	89% @ 230V AC	PELV	NEC Class 2	IP20	7009K81	000000
				24	21.6 to 27.6	10	12	180	0.9 @ 230V AC	92% @ 230V AC	PELV	NEC Class 2	IP20	7009K82	000000
				24	21.6 to 27.6	20	24	230	0.97 @ 230V AC	93% @ 230V AC	PELV	NEC Class 2	IP20	3719N114	000000


				48	43.2 to 55.2	5	6	350	0.9 @ 230V AC	92% @ 230V AC	PELV	NEC Class 2	IP20	3719N113	000000
				48	43.2 to 55.2	10	12	470	0.97 @ 230V AC	93% @ 230V AC	PELV	NEC Class 2	IP20	3719N115	000000




						Spring-Clamp-Terminal Input and Output Connection

						24	21.6 to 28	1.3	1.56	190	Not Rated	87% @ 115V AC 86% @ 230V AC	PELV	NEC Class 2	IP20	3719N21	000000


						24	21.6 to 28	2.5	3	190	Not Rated	87% @ 115V AC 89% @ 230V AC	PELV	NEC Class 2	IP20	3719N22	000000
						24	21.6 to 28	5	6	110	0.9 @ 230V AC	90% @ 115V AC 92% @ 230V AC	PELV	NEC Class 2	IP20	3719N23	000000




								Spring-Clamp-Terminal Input and Output Connection—With Output Voltage Signal

								24	21.6 to 28	10	15	100	0.9 @ 230V AC	91% @ 115V AC 93% @ 230V AC	PELV	NEC Class 2	IP20	3719N24	000000


								24	21.6 to 28	20	30	130	0.9 @ 230V AC	91% @ 115V AC 93% @ 230V AC	PELV	NEC Class 2	IP20	3719N25	000000


								Three Phase—380-480V AC Input Voltage







												Screw-Clamp Terminal Input and Output Connection

												24	22.5 to 29.5	5	6	160	Not Rated	89% @ 400V AC	PELV, SELV	—	IP20	3719N116	000000


												24	22.5 to 29.5	10	12	190	Not Rated	89% @ 400V AC	PELV, SELV	—	IP20	3719N117	000000
												24	22.5 to 29.5	20	24	130	Not Rated	91% @ 400V AC	PELV, SELV	—	IP20	7009K55	000000
24												22.5 to 29.5	40	48	90	Not Rated	92% @ 400V AC	PELV, SELV	—	IP20	3719N119	000000

DIN-Rail-Mount Power Supplies

Single Phase

Mount these power supplies onto DIN rails inside electrical panels and enclosures—they convert AC to DC voltage to power electronic equipment. With a set of standard features, they're a cost-effective option for clean, controlled environments with a stable supply of electricity. Use them to power testing and measuring devices as well as commercial equipment, such as printers and ATMs. Unlike heavy duty power supplies, they're not made for tough, dirty environments.

All of these power supplies 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. Some are also SEMI F47 compliant, meaning they meet standards for maintaining output voltage when input voltage dips. This is commonly known as voltage sag immunity.

If you exceed the maximum voltage, current, or load, these power supplies shut down to protect both the power supply and the connected equipment. Some also meet the voltage requirements for use in an SELV (separated extra low voltage) circuit.

With various domestic and international certifications, such as UL listing, CE marking, and TUV certification, these power supplies meet stringent safety standards. Power supplies with an NEC Class 2 or LPS output limit the risk of electrical shock should something fail inside the power supply. Power supplies with an IP20 rating prevent your fingers from touching internal components and accidentally shocking yourself.

Cannot Be Sold To—Power supplies that cannot be sold to the regions listed do not meet local energy efficiency requirements.

	Output
	Voltage, V DC	Voltage Adjustment Range, V DC	Current, amp	Max. Noise Peak-to-Peak, mV DC	Power Factor @ Voltage	Efficiency @ Voltage	For Extra-Low Voltage Circuit Type	Low-Voltage Output Protection	Enclosure Rating	Certification	Specs. Met	Cannot Be Sold To		Each
Single Phase—85V-260V AC Input Voltage







				Screw-Clamp Terminal Input and Output Connection—With Output Voltage Signal

				12	10.8 to 13.2	1.7	120	Not Rated	80% @ 230V AC	—	NEC Class 2	IP20	UL Listed C-UL Listed CE Marked UL Recognized Component	UL 508	—	3718N203	000000


				12	12 to 15	7.5	180	0.97 @ 115V AC 0.94 @ 230V AC	87% @ 230V AC	—	LPS, NEC Class 2	IP20	UL Listed C-UL Listed CE Marked	UL 508	—	3718N206	00000


				Single Phase—90-264V AC Input Voltage







								Spring-Clamp-Terminal Input and Screw-Clamp Terminal Output Connection—With Output Voltage Signal

								12	10.8 to 16.2	5	120	Not Rated	86% @ 230V AC	—	LPS, NEC Class 2	IP20	UL Listed C-UL Listed CE Marked UL Recognized Component	UL 508	—	3718N602	00000


								Single Phase—100-240V AC Input Voltage







												Screw-Clamp Terminal Input and Output Connection

												48	43.2 to 52.8	5	180	0.98 @ 115V AC 0.9 @ 230V AC	88% @ 115V AC 90% @ 230V AC	SELV	—	—	UL Listed C-UL Listed C-UL Recognized Component CE Marked D Marked UL Recognized Component	UL 508	California, Vermont	3718N113	00000




														Screw-Clamp Terminal Input and Output Connection—With Output Voltage Signal

														5	5 to 6	2	80	Not Rated	77% @ 230V AC	—	LPS, NEC Class 2	IP20	UL Listed C-UL Listed CE Marked	UL 508	—	3718N442	00000


														5	5 to 6	10	80	Not Rated	78% @ 230V AC	—	LPS, NEC Class 2	IP20	UL Listed C-UL Listed CE Marked	UL 508	—	3718N152	00000
														12	10.8 to 16.2	3.3	120	Not Rated	86% @ 230V AC	—	LPS, NEC Class 2	IP20	UL Listed C-UL Listed CE Marked TUV Rheinland Certified UL Recognized Component	UL 508	—	3718N631	00000
														15	13.5 to 16.5	1.3	120	Not Rated	81% @ 230V AC	—	LPS, NEC Class 2	IP20	UL Listed C-UL Listed CE Marked TUV Rheinland Certified UL Recognized Component	UL 508	—	3718N956	00000
														48	39.1 to 49.2	1.25	200	Not Rated	88% @ 230V AC	—	LPS, NEC Class 2	IP20	UL Listed C-UL Listed CE Marked TUV Rheinland Certified UL Recognized Component	UL 508	—	3718N546	00000

Motor-Starting DIN-Rail-Mount Power Supplies


Single Phase, Screw-Terminal Input and Output Connection	Single Phase, Screw-Clamp Terminal Input and Output Connection—With Output Voltage Signal, Remote On/Off

Convert AC voltage to power DC motors, solenoid valves, charging capacitors, and other devices that require large start-up current. These power supplies mount onto DIN rails and are capable of briefly boosting power above their maximum output. It means you don't have to use an oversized power supply just to handle spikes in demand. With a set of standard features, they're a cost-effective way to power motors in clean, controlled environments that have a stable supply of electricity. They're not recommended for tough industrial environments.

With various domestic and international certifications, such as UL listing, CE marking, and TUV certification, these power supplies meet stringent safety standards. Some meet additional standards for marine vessels classed by DNV-GL. Power supplies with an IP20 rating prevent your fingers from touching internal components and accidentally shocking yourself.

Remote On/Off—They have a remote on/off feature that can be controlled by connecting to an external DC power source, such as a battery. Configure the power source to send a signal when you press a button or flip a switch, and the power supply will turn on or off.

Cannot Be Sold To—Power supplies that cannot be sold to the regions listed are restricted by local energy efficiency requirements.

	Output
	Voltage, V DC	Voltage Adjustment Range, V DC	Current, amp	Peak Current, amp	Peak Current Duration, sec.	Max. Noise Peak-to-Peak, mV DC	Power Factor @ Voltage	Efficiency @ Voltage	For Extra-Low Voltage Circuit Type	Enclosure Rating	Cannot Be Sold To		Each
Single Phase—100-240V AC Input Voltage







				Screw-Terminal Input and Output Connection

				12	11 to 14	2.1	2.1	2	100	Not Rated	85% @ 115V AC 85% @ 130V AC	SELV	—	—	3720N204	000000




						Screw-Clamp Terminal Input and Output Connection—With Output Voltage Signal, Remote On/Off

						24	22.5 to 26.4	20	30	5	150	0.98 @ 115V AC 0.93 @ 230V AC	92% @ 115V AC 94% @ 230V AC	SELV	—	—	3720N124	000000


						24	22.5 to 28.5	5	7.5	5	150	0.98 @ 115V AC 0.93 @ 230V AC	90% @ 115V AC 92% @ 230V AC	SELV	—	California, Vermont	3720N21	000000
						24	22.5 to 28.5	10	15	5	150	0.98 @ 115V AC 0.93 @ 230V AC	92% @ 115V AC 94% @ 230V AC	SELV	—	California, Vermont	3720N122	000000
						48	45 to 55.2	10	15	5	150	0.98 @ 115V AC 0.93 @ 230V AC	92% @ 115V AC 94% @ 230V AC	SELV	—	—	3720N125	000000
						48	47.1 to 51.8	5	7.5	3	300	0.96 @ 115V AC 0.96 @ 230V AC	92% @ 230V AC	—	IP20	California	3720N102	000000


						Single Phase—180-240V AC Input Voltage







										Screw-Clamp Terminal Input and Output Connection—With Output Voltage Signal, Remote On/Off

										24	24 to 28	40	60	4	240	0.98 @ 230V AC	95% @ 230V AC	SELV	—	—	3720N116	000000