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POWERBOX Marine Line PT571 Series

  • Marine Supply up to 125W
  • GL approved for bridge use
  • EN60945 compliant
  • Universal input (90 - 265V )
  • Active Power Factor Correction
  • Adjustable output
  • Overload and overvoltage protection user selectable
  • Thermal overload protection
  • Conformal coating
  • DC OK potential free contact
  • Base plate cooled
  • Low profile 35 mm
  • RoHS compliant

PT571 Series

Product Overview

POWERBOX Marine Line 150 

125W AC/DC Base Plate Cooled Power Supply for Marine and Off Shore Applications 

Description   Powerbox Marine Line PT571 power supplies for marine, offshore and demanding industrial applications have base plate cooling and GL approval for ship bridges placement (EN60945). In addition the products meet requirements set for tough environmental standards, which makes them suitable for demanding areas.


Input voltage 90 - 265 VAC, 125 - 375 VDC
Frequency 47 - 63 Hz, 440 Hz with reduced PFC.
Inrush current 30 A; cold start @ 230 VAC / 25°C
Input current < 0.65 A @ 230 VAC.
Input fuse 2 AT; internal, not user serviceable.

86% typical (12V).

90% others.

Leakage current < 3.5 mA.
Output Voltage 24 V, adjustable 23 - 29 V
Output power 125 W continuous, 150 W peak (10s).
Minimum load 0 A
Load Regulation ±0.5%.
Temperature coefficient ±0.02%/°C.
Overvoltage protection 24 V model. 32 V
Overload protection Hiccup or latch mode, selectable.
Peak short circuit current 10 A (< 100 ms).
Overtemp. protection ±105 °C base plate temperature.
Turn-on delay < 2 s @ 90 VAC

DC OK: Green LED

Overload: Blinking orange LED

Fail: Red LED

Potential free contact;

active closed; I < 1 A, open voltage < 30V.

Redundancy Internal diode optional.
Isolation voltage

Input/Output EN60945.

Input/Chassis EN61000-3-2.

Dimensions (LxWxH) 200 x 100 x 35 mm.
Weight < 1.0 kg.
Warranty 2 Years.
Operating temperature –25 to +70°C without derating.
Storage temperature –40°C to +85°C.

5 - 95%; non-condensing @ +55°C.

Conformal coating


Germanischer Lloyd table 3.16.

High vibration strain. ±1.6 mm displacement;

2-25 Hz 4g; 25-100 Hz (1 octave/min).


10,000 feet; operating.

30,000 feet; non-operating.

Safety approvals According to EN60950.

Germanischer Lloyd.

Environmental category: D, EMC1.

Guidelines for the Performance of Type.

Approvals Chapter 2, Edition 2003.


Low Voltage Directive 2006/95/EC.

EMC Directive 2004/108/EC.

EMC Emissions

EN60945 conducted & radiated.


EN61000-3-2 compliant.


EN61000-4-2 Air ± 8 kV Contact ± 4 kV.

Electromagnetic fields

EN61000-4-3 10V/m 8MHz-2GHz


EN61000-4-4 2kV


EN61000-4-5 Line-Line 0.5kV, Line-GND 1kV

Conducted immunity

EN61000-4-6 3VRMS 150kHz-80MHz.

Conducted LF

IEC60533 3VRMS 50Hz-12kHz.

HV immunity

IEC60947-2 2kV, 60s

CE approvals

EMC Directive 2014/30/EU.

Low Voltage Directive is 2014/35/EU.

Technical Illustration

  • PT571 - Mechanical PT571 - Mechanical
  • PT571 - Pin Connection PT571 - Pin Connection
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