LDN120-12

## LDN120 Series 

## 120 W DIN Rail 

Switching Power Supply 

- LDN120 Series are single phase DIN Rail Switching Power Supplies, suitable for worldwide applications such as process control, heavy duty applications, but also building automation. These units have received excellent market approval for their high efficiency, excellent reliability and compactness. Simple but elegant look and ease of installation due to 

- = pluggable connectors make them ideal for various industrial applications. 

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- C) ey LDN120 Series are Class I isolation devices designed to be mounted on DIN rail and installed inside a protective 

- + enclosure. + OuTPUT 

- — 24v00/3.50, =/24ViiA9 **FEATURES** 

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- LDN120-24p • Input voltage 90 - 264 VAC or 110 - 345 VDC • Output voltage 12 V, 24 V, 48 V (adjustable) 

- N INPUT • Operating ambient temperature range -40°C to +70°C 50-60Hz (up to 60°C with no derating) • Efficiency up to 86% • Overload 150% • Excellent field reliability record • Compact size in aluminum enclosure • Dimensions: 40 x 115 x 110 mm 

- **RoHS** 

- (Oy)usLISTED Compliant S = ( € **APPLICATIONS** • Automation • Process control • Communication • Instrumentation equipment 

LDN120 Series are single phase DIN Rail Switching Power Supplies, suitable for worldwide applications such as process control, heavy duty applications, but also building 

These units have received excellent market approval for their high efficiency, excellent reliability and compactness. Simple but elegant look and ease of installation due to pluggable connectors make them ideal for various industrial applications. LDN120 Series are Class I isolation devices designed to be mounted on DIN rail and installed inside a protective enclosure. 

• Input voltage 90 - 264 VAC or 110 - 345 VDC • Output voltage 12 V, 24 V, 48 V (adjustable) • Operating ambient temperature range -40°C to +70°C 

**belfuse.com/power-solutions** 

LDN120 Series 

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## **1. MODEL SELECTION** 

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OUTPUT  MAX OUTPUT  MAX OUTPUT<br>MODEL INPUT VOLTAGE RANGE  EFFICIENCY REDUNDANCY<br>VOLTAGE  CURRENT  POWER<br>LDN120-12 120 - 240 VAC (110 - 345 VDC) 12 V 7.0 A 84 % 120 W<br>LDN120-24 120 - 240 VAC (110 - 345 VDC) 24 V 5.0 A 87 % 120 W<br>LDN120-24P 120 - 240 VAC (110 - 345 VDC) 24 V 5.0 A 85 % Internal ORing diode 120 W<br>LDN120-48P 120 - 240 VAC (110 - 345 VDC) 48 V 2.5 A 86 % Internal ORing diode 120 W<br>2. INPUT SPECIFICATIONS<br>PARAMETER DESCRIPTION / CONDITIONS SPECIFICATION<br>Nominal (UL certified) 100 - 240 VAC<br>AC Input Voltage<br>Range 90 - 264 VAC<br>DC Input Voltage 110 - 345 VDC<br>Input Frequency 47 - 63 Hz<br>LDN120-12 1.9 A<br>Vin = 120 VAC<br>LDN120-24 / LDN120-24P / LDN120-48P 2.1 A<br>AC Input Current<br>LDN120-12 1.1 A<br>Vin = 240 VAC<br>LDN120-24 / LDN120-24P / LDN120-48P 1.2 A<br>LDN120-12 1.3 A<br>Vin = 110 VDC<br>LDN120-24 / LDN120-24P / LDN120-48P 1.4 A<br>DC Input Current<br>LDN120-12 0.5 A<br>Vin = 345 VDC<br>LDN120-24 / LDN120-24P / LDN120-48P 0.6 A<br>Inrush Peak Current Peak Current measured after 0.2 ms from main connection;   ≤ 30 A<br>I²t 240 VAC / 50 Hz; Ta = 25°C; Cold Start  0.72 A²s<br>Touch (Leakage) Current ≤ 0.45 mA<br>Internal Protection Fuse  Not user replaceable 3.15 AT<br>It is strongly recommended to provide external surge arresters  Fuse 6  AT<br>Recommended External Protection<br>(SPD) according to local regulations. or MCB 6  A C curve<br>3. OUTPUT SPECIFICATIONS<br>PARAMETER DESCRIPTION / CONDITIONS SPECIFICATION<br>LDN120-12 12 - 15 VDC<br>Output Voltage (Adjustable) LDN120-24 / LDN120-24P  23 - 28 VDC<br>LDN120-48P 45 - 55 VDC<br>LDN120-12 7.0 A<br>Output Current (Continuous) LDN120-24 / LDN120-24P  5.0 A<br>LDN120-48P 2.5 A<br>LDN120-24 ≤ 2 %<br>LDN120-24P ≤ 1 %<br>Load Regulation<br>LDN120-48 ≤ 2.5 %<br>LDN120-48P ≤ 1.5 %<br>LDN120-12 ≤ 120  mVpp<br>Ripple & Noise [ 1]<br>LDN120-24 / LDN120-24P / LDN120-48P ≤ 60 mVpp<br>Vin = 120 VAC LDN120-12 / LDN120-24P / LDN120-48P ≥ 10 ms<br>LDN120-24 ≥ 20 ms<br>Hold-up Time<br>LDN120-12 ≥ 60  ms<br>Vin = 240 VAC<br>LDN120-24 / LDN120-24P / LDN120-48P ≥ 50 ms<br>DC OK - green LED<br>Status Signals<br>DC OK - dry contact (NO, 24 VDC / 1 A)<br>Possible for power or redundancy (with external ORing module)<br>Parallel Connection<br>P models - include internal ORing diode<br>END OF LIFE<br>**----- End of picture text -----**<br>


- 1 20 MHz BW probe terminated with a 0.1 μF MKP parallel capacitor 

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tech.support@psbel.com 

**belfuse.com/power-solutions** 

LDN120 Series 

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## **4. PROTECTIONS** 

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PARAMETER DESCRIPTION / CONDITIONS SPECIFICATION<br>Short Circuit Protection Hiccup mode, Short circuit peak current 30 A<br>LDN120-12 11 - 9.5 A<br>Overload Protection Hiccup mode, Overload limit  LDN120-24 / LDN120-24P 7.0 A<br>LDN120-48P 3.7 A<br>Thermal Protection<br>LDN120-12 ≥ 18 VDC<br>Over Voltage Protection LDN120-24 / LDN120-24P ≥ 33  VDC<br>LDN120-48P ≥ 68  VDC<br>5. ENVIRONMENTAL, EMC & SAFETY SPECIFICATIONS<br>PARAMETER DESCRIPTION / CONDITIONS SPECIFICATION<br>UL certified up to 60°C  -40 to +70 °C<br>Operating Temperature<br>Start-up type tested: - 40°C, possible at Vnom with load deration.<br>Storage Temperature -40 to +80 °C<br>Derating Over 60°C - 2.4 W/°C<br>LDN120-12 < 20 W<br>LDN120-24  < 18 W<br>Dissipated Power<br>LDN120-24P  < 21 W<br>LDN120-48P < 19 W<br>Humidity Non-condescending 5 - 95 % RH<br>Life Time Expectancy Ta = 25°C, full load 106 880 (12.2) hrs (years)<br>MTBF MIL-HDBK-217F at Ta = 25°C, full load  > 600 000 hrs<br>Overvoltage Category  EN 50178 III<br>Pollution Degree IEC 60664-1 2<br>Protection Class Class I<br>Input to Output  4.2 kVDC<br>Isolation Input to Ground 2.2 kVDC<br>Output to Ground 0.75 kVDC<br>UL 508<br>UL 61010-1<br>Safety Standards & Approvals UL 61010-2-201<br>IEC/EN 61010-1<br>IEC/EN 61010-2-201<br>EMC Emissions EN 55011 / CISPR 11  Class A<br>EN 61000-4-2                                                                  Level 3 (Air), Level 2 (Contact)<br>EN 61000-4-3                                                                  Level 3 (80 - 1000 MHz), Level 2 (1.4 - 6 GHz)<br>EN 61000-4-4                                                                  Level 3<br>EMC Immunity EN 61000-4-5                                                                  Level 3<br>EN 61000-4-6                                                                  Level 3<br>EN 61000-4-8                                                                  Level 4<br>EN 61000-4-11                                                                Level 2<br>Protection Degree  EN 60529 IP20<br>5-17.8 Hz: ±1.6 mm; 17.8-500 Hz:<br>Vibration Sinusoidal IEC 60068-2-6<br>2 g 2 Hours / axis (X,Y,Z)<br>30 g 6 ms, 20 g 11 ms;<br>Shock IEC 60068-2-27<br>3 bumps / direction, 18 bumps total<br>Asia-Pacific EMEA North America<br>+86 755 298 85888 +353 61 49 8941 +1 866 513 2839<br>belfuse.com/power-solutions<br>© 2022 Bel Power Solutions & Protection                    BCD.00716_AF   21 July 2022<br>END OF LIFE<br>**----- End of picture text -----**<br>


LDN120 Series 

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## **6. MECHANICAL SPECIFICATIONS** 

**PARAMETER DESCRIPTION / CONDITIONS SPECIFICATION** 40 x 115 x 110 mm Dimensions 1.57 x 4.53 x 4.33 in Weight 450 g Mounting Rail IEC 60715/H15/TH35-7.5(-15) Connection Terminals Screw type pluggable (24 - 12 AWG) 2.5 mm² Case Material Aluminum **PIN LAYOUT & DESCRIPTION PIN DESCRIPTION** 1 AC/DC input (4) | DC OK 2 DC output (load) Onn | >a)Vo Adj.Ie 3 Diagnostic Output  (dry contact, NC output OK) = 24V,5A 4 Green LED: Output OK (2) i | + OUTPUT 5 Output voltage adjustment 3) { aI _/ec- oK ; bel 2%: **INPUT CONNECTION Single phase** L = Line L = + Positive DC **DC Input** N = Neutral N = - Negative DC LDN120-24P ~~®~~[= Earth ground] ~~)~~[= Earth ground] — N **OUTPUT CONNECTION** + = Positive DC 2.11.24 (1) 50-60INPUTHz -  = Negative DC L L ~ 120-240 V P Se) **SIGNALLING** DC OK: dry contact i • NO • COM staketyAREERbag Seat eee es AN5 SOLUTIONSPOWER & tech.support@psbel.com SHEE oe a bel group **belfuse.com/power-solutions** 

LDN120 Series 

## **7.  MECHANICAL DRAWING** 

2 WZ)bok | _&i peakco IS I 1O HI 1f| mo 110 10 AQ Figure 1. Mechanical Drawing **Notes:** Technical parameters are typical, measured in laboratory environment at 25°C and 240 VAC / 50 Hz, at nominal values, after minimum 5 minutes of operation. Power rating, losses, efficiency, ripple, thermal behaviour and start-up may change outside of the nominal rated input range. Contact factory for details. **NUCLEAR AND MEDICAL APPLICATIONS** - Products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. **TECHNICAL REVISIONS** - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. **Asia-Pacific EMEA North America** gE aan bec | SPPROTECTION **O** LUTIONSWER & +86 755 298 85888 +353 61 49 8941 +1 866 513 2839 “ae a bel group **belfuse.com/power-solutions** © 2022 Bel Power Solutions & Protection                    BCD.00716_AF   21 July 2022 

**NUCLEAR AND MEDICAL APPLICATIONS** - Products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. **TECHNICAL REVISIONS** - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice.