LDN481 Series is a single phase DIN Rail Switching Power Supply
suitable for broad range of industrial, telecom and renewable energy
applications.
The unit has received excellent market approval for its high efficiency,
excellent reliability and compactness. Simple but elegant look and
easy installation makes it ideal for various industrial applications.
LDN481 Series is Class I isolation device suitable for SELV and PELV
circuitry (up to 48 VDC models) and is designed to be mounted on DIN
rail and installed inside a protective enclosure.
High efficiency
Compact size
Overload 150%
Constant current or Hiccup mode limitation, user settable
Easy parallelable for power increase
Natural convection cooling
RoHS Compliant
Industrial automation
Heavy duty applications
Process control
Building automation and general purpose
2
LDN481 Series
LDN481-24 90-132 / 187-264 VAC (270 - 345 VDC) 1 24 VDC 20 A
LDN481-48 90-132 / 187-264 VAC (270 - 345 VDC) 1 48 VDC 10 A
LDN481-72 90-132 / 187-264 VAC (270 - 345 VDC) 1 72 VDC 6.7 A
Technical parameters are typical, measured in laboratory environment at 25C and 240 VAC / 50 Hz, at nominal values, after minimum 5
minutes of operation.
Rated ( UL certified) Settable with Voltage Selector Bridge 120 / 240 VAC
Input AC Voltage Range
Operating 90 132 / 187 264 VAC
Input DC Voltage Range Rated (without Voltage Selector Bridge) 270 345 VDC
Input Frequency 47 63 Hz
Vin = 120 VAC 7.2 A
Input AC Current
Vin = 240 VAC 4.3 A
Vin = 270 VDC 2.2 A
Input DC Current
Vin = 345 VDC 1.9 A
Inrush Peak Current 35 A
Touch (Leakage) Current 1 mA
Internal Protection Fuse None, external fuse must be provided
It is strongly recommended to provide external surge
Fuse AT 16A or MCB 16A C
Recommended External Protection
arresters (SPD) according to local regulations
Output Power 480 W
LDN481-24 24 VDC (23 28 VDC)
Rated Voltage
LDN481-48 48 VDC (45 55 VDC)
(Adjustable Voltage Range)
LDN481-72 72 VDC (72 85 VDC)
LDN481-24 20 A
Continuous Current LDN481-48 10 A
LDN481-72 6.7 A
LDN481-24 22 A
Overload Limit (Constant Current Mode) LDN481-48 11 A
LDN481-72 7.5 A
LDN481-24 30 A
Overload Limit (Hiccup Mode) Max. 5 s LDN481-48 15 A
LDN481-72 10 A
LDN481-24 1.0%
Load Regulation
LDN481-48 / LDN481-72 0.5%
LDN481-24 / LDN481-48 100 mVpp
1
Ripple & Noise
LDN481-72 200 mVpp
Hold up Time 35 ms
Overload, short circuit: Constant current or Hiccup mode
(user settable)
Protections
Thermal protection
Output overvoltage
LDN481-24 33 VDC
Output Over Voltage Protection LDN481-48 68 VDC
LDN481-72 100 VDC
tech.support@psbel.com