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New 480W power supply for marine applications

The 24V, 20A DIN rail power supply CP20.245-R2 was developed for on- and offshore use in the marine and process industry. The marine-compliant power supply meets the high requirements of EMC class B without external filters and can be used directly in bridge and deck applications.

The CP20.245-R2 features the perfect electronical and mechanical design for the rough environmental conditions at sea and on the coast. The power supply is characterized by its high immunity to transients and voltage peaks as well as its robust aluminum housing. The device provides the full output power of 480W even with fluctuating ambient temperatures between -40°C and + 60°C. The extensive approval package includes Marine DNV, Marine ABS and ATEX, among others.

High reliability thanks to integrated decoupling feature

The built-in decoupling feature makes the CP20.245-R2 unique. An integrated decoupling MOSFET enables a safe 1 + 1 and n + 1 redundancy between the power supplies. This ensures the availability of all necessary systems in the event of a fault. The additional redundancy module that is normally required for this kind of setup can be omitted. The special plug-in connectors allow a replacement of the devices during operation, if the sequence described in the data sheet is adhered to.

Proven industrial version is the basis

The CP20.245-R2 is based on the proven industrial version of the CP20, which is used in thousands of applications worldwide. The high efficiency of 95.2% ensures low power losses and little waste heat. In addition, the 20% power reserve has been taken over from the basic version. The compact product width of 48mm could be retained despite the additional, application-specific features.

DC Output24V DC, 20 A, 480 W
InputAC 100 – 240V (-15% / +10%), DC 110V – 150V (± 20%)
Size (WxHxD)48 x 124 x 127 mm


  • AC 100-240V Wide-range input
  • Width only 48mm
  • Marine approvals, EMC Class B (bridge & deck)
  • Built-in decoupling mosfet for 1+1 and n+1 redundancy
  • Efficiency up to 95.2%
  • 20% Output power reserves
  • Safe HiccupPLUS overload mode
  • Easy fuse breaking – 3 times nominal current for 12ms
  • Active power factor correction (PFC)
  • Full power between -40°C and +60°C
  • DC-OK relay contact
  • Current sharing feature included

Technical data

Input Data
AC-ulazni naponAC 100 – 240V (-15% / +10%)
DC-Input VoltageDC 110V – 150V (± 20%)
Harmonic Correctionactive
Power Factor0.98
Input Inrush Current Limitationactive
Input inrush current10A / 4.5A
External input fuse recommendationB-10A / C-10A
Output Data
Nominal voltage24V DC
Adjustment range24V
Output current range20A
Output current20A at 24V
Output power480W
Power reserves20% Power Boost
Ripple and noise voltage max.100mVpp
Size (WxHxD)48 x 124 x 127 mm
Weight per piece (excl. packaging)850g
Operating temperature range-40°C to 70°C
Derating12W/°C at >+60°C
Mounting methodDIN rail
Efficiency, typ.95.2%
Power losses, typ.24.2W
MTBF SN 29500 @ 40°C (h)543000h
Connection methodPlug connector
DC-OK Signalyes