About the Lrs Ultra Thin Switching Power Supply DC

The Lrs Ultra Thin Switching Power Supply DC is part of the ELEHPD LRS Series range. Lrs Ultra Thin Switching Power Supply DC from the ELEHPD LRS Series range. ELEHPD manufactures and exports low voltage electrical products from Yueqing, Zhejiang, China, supplying distributors, panel builders, M&E contractors and OEM buyers worldwide.

Full catalogue description: Lrs Ultra Thin Switching Power Supply 350W 12V 24V 36V 48V DC Industrial SMPS

Typical applications

Motor control centres and pump or fan starters
Machine building, conveyors, packaging and CNC equipment
HVAC control panels and building automation
Water treatment, irrigation and pumping stations
Panel retrofits replacing electromechanical control gear

How to specify the right LRS Series

Size the contact rating for the inductive load, not just the resistive current (AC-3 duty for motors)
Check the coil voltage and frequency available in the panel: 24 V DC, 110 V, 230 V or 400 V AC
Confirm the auxiliary contact count needed for the control and indication circuit
Match the enclosure rating to the environment (IP20 inside a panel, IP65 on the machine)

Specifications

Lrs Ultra Thin Switching Power Supply 350W 12V 24V 36V 48V DC Industrial SMPS

SPECIFICATION

OUTPUT

Model LRS-350-3.3 LRS-350-5 LRS-350-12 LRS-350-15 LRS-350-24 LRS-350-36 LRS-350-48

DC Voltage 3.3V 5V 12V 15V 24V 36V 48V

Rated Current 60A 60A 29A 23.2A 14.6A 9.7A 7.3A

Current Range 0~60A 0~60A 0~29A 0~23.2A 0~14.6A 0~9.7A 0~7.3A

Rated Power 198W 300W 348W 348W 350.4W 349.2W 350.4W

Ripple & Noise 150mVp-p 150mVp-p 150mVp-p 150mVp-p 150mVp-p 200mVp-p 200mVp-p

Voltage Adj. Range 2.97~3.6V 4.5 ~ 5.5V 10~ 13.8V 13.5~18V 21.6~28.8V 32.4~39.6V 43.2~52.8V

Voltage Tolerance ±4.0% ±3.0% ±1.5% ±1.0% ±1.0% ±1.0% ±1.0%

Line Regulation ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5%

Load Regulation ±2.5% ±2.0% ±1.0% ±0.5% ±0.5% ±0.5% ±0.5%

Setup, Rise Time 1300ms, 50ms/230VAC 1300ms, 50ms/115VAC at full load

Hold Up Time 16ms/230VAC 12ms/115VAC at full load

Voltage Range 90 ~ 132VAC / 180 ~ 264VAC selected by switch 254 ~ 370VDC (switch on 230VAC)

Frequency Range 47 ~ 63Hz

Efficiency 79.50% 83.50% 85% 86% 88% 88.50% 89%

AC Current 6.8A/115VAC 3.4A/230VAC

Inrush Current 60A/115VAC 60A/230VAC

Leakage Current <2mA / 240VAC

Over Load 110 ~ 140% rated output power

Protection type: Hiccup mode, recovers automatically after fault condition is removed

Over Voltage 3.8~4.45V 5.75~6.75V 13.8 ~ 16.2V 18~21V 28.8 ~ 33.6V 41.4~46.8V 55.2~ 64.8V

Protection type: Hiccup mode, recovers automatically after fault condition is removed

Over temperature Hiccup mode, recovers automatically after fault condition is removed

Working Temp. -20 ~ +70ºC (Refer to "derating curve")

Working Humidity 20 ~ 90% RH non-condensing

Storage Temp.,Humidity -40 ~ +85ºC, 10 ~ 95% RH

Temp. Coefficient ±0.03%/ºC (0 ~ 50ºC)

Vibration 10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes

Safety Standards UL60950-1 approved

Withstand Voltage I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC

Isolation Resistance I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25ºC / 70% RH

Dimension 21511530mm (LWH)

Weight 0.76Kg

Packing 20pcs/carton/16kg/0.78CUFT

NOTE

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25ºC of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
3. Tolerance: includes set up tolerance, line regulation and load regulation.
4. Line regulation is measured from low line to high line at rated load.
5. Load regulation is measured from 0% to 100% rated load.
6. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives.
7. Length of set up time is measured at cold first start. Turning ON/OFF the power supply very quickly may lead to increase of the set up time.

Q: What is the difference between a contactor and a relay?

A contactor is built for switching power circuits repeatedly at high current, often with motor duty ratings (AC-3) and arc-suppressing chambers. A relay switches control signals at low current. In practice: contactor for the motor, relay in the control circuit that drives the contactor coil.

Q: How do I calculate the correct contactor size for a motor?

Use the motor's full-load current, apply the AC-3 rating for the operating voltage, and allow for the number of starts per hour. As a rule of thumb, the contactor's AC-3 rating should be at least equal to the motor FLC, then step up one frame if the duty is heavy.

Q: Do you supply the coil voltage I need?

Coil voltages are specified per order. Send the model number, coil voltage and frequency you require and we will confirm availability and lead time.

Q: Are auxiliary contacts included?

Base models come with the standard auxiliary contact configuration for that frame. Add-on auxiliary blocks and mechanical interlocks can be quoted with the contactor.

Frequently asked questions about the Lrs Ultra Thin Switching Power Supply DC

What is the difference between a contactor and a relay?

A contactor is built for switching power circuits repeatedly at high current, often with motor duty ratings (AC-3) and arc-suppressing chambers. A relay switches control signals at low current. In practice: contactor for the motor, relay in the control circuit that drives the contactor coil.

How do I calculate the correct contactor size for a motor?

Use the motor's full-load current, apply the AC-3 rating for the operating voltage, and allow for the number of starts per hour. As a rule of thumb, the contactor's AC-3 rating should be at least equal to the motor FLC, then step up one frame if the duty is heavy.

Do you supply the coil voltage I need?

Coil voltages are specified per order. Send the model number, coil voltage and frequency you require and we will confirm availability and lead time.

Are auxiliary contacts included?

Base models come with the standard auxiliary contact configuration for that frame. Add-on auxiliary blocks and mechanical interlocks can be quoted with the contactor.

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AC to DC 200W 12V 17A CCTV Single Output Switching Power Supply

Lrs Switching Power Supply 1200W 48V DC AC Ultra Thin SMPS

SPECIFICATION
OUTPUT
Model	LRS-350-3.3	LRS-350-5	LRS-350-12	LRS-350-15	LRS-350-24	LRS-350-36	LRS-350-48
DC Voltage	3.3V	5V	12V	15V	24V	36V	48V
Rated Current	60A	60A	29A	23.2A	14.6A	9.7A	7.3A
Current Range	0~60A	0~60A	0~29A	0~23.2A	0~14.6A	0~9.7A	0~7.3A
Rated Power	198W	300W	348W	348W	350.4W	349.2W	350.4W
Ripple & Noise	150mVp-p	150mVp-p	150mVp-p	150mVp-p	150mVp-p	200mVp-p	200mVp-p
Voltage Adj. Range	2.97~3.6V	4.5 ~ 5.5V	10~ 13.8V	13.5~18V	21.6~28.8V	32.4~39.6V	43.2~52.8V
Voltage Tolerance	±4.0%	±3.0%	±1.5%	±1.0%	±1.0%	±1.0%	±1.0%
Line Regulation	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%
Load Regulation	±2.5%	±2.0%	±1.0%	±0.5%	±0.5%	±0.5%	±0.5%
Setup, Rise Time	1300ms, 50ms/230VAC 1300ms, 50ms/115VAC at full load
Hold Up Time	16ms/230VAC 12ms/115VAC at full load
Voltage Range	90 ~ 132VAC / 180 ~ 264VAC selected by switch 254 ~ 370VDC (switch on 230VAC)
Frequency Range	47 ~ 63Hz
Efficiency	79.50%	83.50%	85%	86%	88%	88.50%	89%
AC Current	6.8A/115VAC 3.4A/230VAC
Inrush Current	60A/115VAC 60A/230VAC
Leakage Current	<2mA / 240VAC
Over Load	110 ~ 140% rated output power
Protection type: Hiccup mode, recovers automatically after fault condition is removed
Over Voltage	3.8~4.45V	5.75~6.75V	13.8 ~ 16.2V	18~21V	28.8 ~ 33.6V	41.4~46.8V	55.2~ 64.8V
Protection type: Hiccup mode, recovers automatically after fault condition is removed
Over temperature	Hiccup mode, recovers automatically after fault condition is removed
Working Temp.	-20 ~ +70ºC (Refer to "derating curve")
Working Humidity	20 ~ 90% RH non-condensing
Storage Temp.,Humidity	-40 ~ +85ºC, 10 ~ 95% RH
Temp. Coefficient	±0.03%/ºC (0 ~ 50ºC)
Vibration	10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes
Safety Standards	UL60950-1 approved
Withstand Voltage	I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
Isolation Resistance	I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25ºC / 70% RH
Dimension	21511530mm (LWH)
Weight	0.76Kg
Packing	20pcs/carton/16kg/0.78CUFT
NOTE
1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25ºC of ambient temperature. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor. 3. Tolerance: includes set up tolerance, line regulation and load regulation. 4. Line regulation is measured from low line to high line at rated load. 5. Load regulation is measured from 0% to 100% rated load. 6. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. 7. Length of set up time is measured at cold first start. Turning ON/OFF the power supply very quickly may lead to increase of the set up time.

Lrs Ultra Thin Switching Power Supply DC