Item no. 787-1015/072-000

DC/DC Converter; EPSITRON® COMPACT Power; 72 VDC input voltage; 12 VDC output voltage; 4 A output current; galvanically isolated

Features:

  • Switched-mode power supply
  • Natural convection cooling when horizontally mounted
  • Stepped profile, ideal for distribution boards/boxes
  • Suitable for both parallel and series operation
  • Electrically isolated output voltage (SELV) per EN 60950-1
  • Control deviation: ±1 % (±10 % within the application range of EN 50121-3-2)
  • Suitable for railway applications

Product details

Details
Technical Data
Input
Nominal input voltage Ui nom DC 72 V
Input voltage range DC 40 … 90 V
Nominal mains frequency range 0 Hz
Input current Ii ≤ 0.79 A (72 VDC)
Discharge current ≤ 1 mA
Inrush current ≤ 30 A (NTC)
Mains failure hold-up time ≥ 8 ms (72 VDC)
Output
Nominal output voltage Uo nom DC 12 V (SELV)
Default setting DC 12 V
Nominal output current Io nom 4 A (24 VDC); 3.1 A (in any mounting position)
Nominal output power 48 W
Control deviation ≤ 1 %
Residual ripple ≤ 100 mV (peak-to-peak)
Current limitation 1.1 x Io nom (typ.)
Overload behavior Constant current
Signaling and communication
Signaling 1 x Status indication LED (green)
Operation status indicator Green LED (Uo)
Efficiency/power losses
Power loss Pl ≤ 1.2 W (72 VDC; No load); ≤ 8.6 W (72 VDC; Nominal load)
Power loss (max.) Pl (max.) 9.7 W (40 VDC / 12 VDC; 4 A)
Efficiency (typ.) 85 %
Circuit protection
Internal fuse T 4 A / 125 VDC
Recommended backup fusing Circuit breaker: 6 A, 10 A; Tripping characteristic: B or C
Safety and protection
Isolation voltage (Pri.-Sec.) DC 4.242 kV
Protection class II
Protection type IP20 (per EN 60529)
Resistance to reverse feed ≤ DC 20 V
Overvoltage category II
Transient suppression (primary) Varistor
Overvoltage protection; secondary Internal protective circuit
≤ 21.5 VDC (in the event of a fault)
Short-circuit-protected Yes
Open-circuit-proof Yes
Parallel operation Yes
Series operation Yes
MTBF > 500,000 h (per IEC 61709)
Connection data
Connection type (1) Input/Output
Connection technology CAGE CLAMP®
WAGO Connector WAGO 740 Series
Solid conductor 0.08 … 2.5 mm² / 28 … 12 AWG
Fine-stranded conductor 0.08 … 2.5 mm² / 28 … 12 AWG
Strip length 6 … 7 mm / 0.24 … 0.28 inch
Physical data
Width 72 mm / 2.835 inch
Height 89 mm / 3.504 inch
Depth 59 mm / 2.323 inch
Depth from upper edge of DIN-rail 55 mm / 2.165 inch
Mechanical data
Mounting type DIN-35 rail
Material Data
Flammability class per UL94 V0
Weight 235 g
Environmental Requirements
Surrounding air temperature (operation) -40 … 70 °C
Surrounding air temperature (storage) -40 … 85 °C
Relative humidity 5 … 96 % (coated PCB)
Derating -1.5 %/K (> 55 °C)
Pollution degree 2
Climatic category 3K3 (per EN 60721)
Resistance to shock and vibration Category 1, Class B (per EN 61373:2010)
Standards and specifications
Conformity marking CE
Standards/Specifications EN 60950; EN 61204-3; EN 50121-3-2; EN 50125; DNV GL
Commercial data
Packaging type BOX
Country of origin DE
GTIN 4055143621502
Customs tariff number 85044082900
Downloads
CAD/CAE-Data
CAD data
2D/3D Models 787-1015/072-000
CAE data