DC/DC Converters

Powerbox PB315 SERIES DC/DC Converter - Railway (500W)

The Powerbox PB315 Series DC/DC Converter is a powerful and reliable 500W solution designed specifically for railway applications. Complying with EN50155 and EN50121-3-2 standards, it provides clean and stable 24Vdc power for critical onboard systems, signaling, and other rail-specific needs.

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Powerbox PB315 SERIES DC/DC Converter - Railway (500W)

Features

  • 250W and 500W DC/DC converters for railway
  • 45-154Vdc input to supply 24Vdc 20.8A or 10.4A
  • Natural convection cooling with integral heatsink
  • High resistance to pollution
  • Wide input voltage range
  • High efficiency low thermal stress
Specifications
INPUT
Input voltage 45-154Vdc
Complies with power supplied from an accumulator battery with the nominal voltage of 72Vdc, 96Vdc, or 110Vdc as per EN50155:1996
Input current 15A
Inrush Current 25A at 110Vdc input
DC ripple factor 15% (EN50155 cl. 3.1.1.4)
PROTECTION
Input reverse polarity Indefinite, series diode on input.
Input fusing 15A, 500V (T) HRC ceramic 32 x 6.3mm fuse - internal
Input overvoltage (Shutdown) Approx 160Vdc, Auto recovery.
High input ripple Indefinite. Series diode on input.
Output short circuit PB315-24*-H: 24Vdc 33A
PB315-24*: 12Vdc 16.5A Indefinite. Auto recovery
Output overcurrent (Current limit) PB315-24*-H: 24Vdc 31A
PB315-24*: 12Vdc 15.5A Auto recovery on removal of over current
Output overvoltage (shutdown) 30-35Vdc Input power must be cycled off then on to restart
Over temperature 110C internal temperature. Auto restart after cooling down
OUTPUT
Output Voltage 24Vdc (23.76 - 24.24V)
Output Current PB315-24*-H: 20.8A
PB315-24*: 10.4A
Continuous power PB315-24*-H: 500W
PB315-24*: 250W See derating curve
Ripple voltage 100mV p-p
Line regulation 0.5% at full load
Load regulation 1.13Typ (1.0-1.5) %Vnom. 0% to full load measured before redundancy diode
Efficiency 90% at full load
Power dissipated PB315-24*-H: 55W at full load
PB315-24*: 27.5W
Redundancy diode 0.33 (0.2 - 0.7) Vdc
Hold up time See technical illustration
ISOLATION
Isolation Input to Chassis: 2121Vdc
Input to Output: 4242Vdc
Input to Output (M input connector): 3960Vdc
Output to Chassis: 707Vdc
Rated Insulation voltage Input: 154Vdc
Output: 25Vdc per IEC60077-1
Rated Impulse withstand voltage Input: 2.5KV
Output: 0.8KV per IEC60077-1
Overvoltage Category Input and Output: OV2 per IEC60077-1
ENVIRONMENT
Operating Ambient Temperature See technical illustrations
Cooling Natural convection No cold plate required
Relative Humidity 5% - 90% Non condensing
Degree of Pollution PD3 (Per IEC60077-1)
I/O INTERFACE
Input Output Terminal Code: * PB315-24 * (-H)
Input and Output: S 5 way screw T/B 40A/600V suitable for M4 ring lugs.
Input and Output: C 7 way cage clamp T/B 20A/300V suitable for 4mm2 wire
Input and Output: F 10 way 6.4mm male QC faston terminals
Input and Output: P Phoenix contact pn DFK-PC-15/5-STF-10,16 or similar 5W feed through terminal block with screw flanges Mating connector: Phoenix contact pn PC 6/5-STF-10,16 or equivalent 5W pluggable screw terminal block with screw flanges suitable for 6mm2 wire supplied with unit.
Input and Output: M MS3102E24-22P F80 panel mounted plug. 4 x #8AWG crimp contacts. MS service rating D Mating connector: MS3106E24-22S F80 straight receptacle, supplied with unit.
Ground Terminal M5 x 12mm stud
"ON" LED Option L: Green LED mounted on top cover. ON when output voltage is present
ELECTROMAGNETIC COMPATIBILITY
General Designed to comply with EN50121-3-2:2000 and EN50155:1996
Conducted Emissions (Input and Output) 150kHz-500kHz: 99dBuV QP
500kHz-30MHz: 93dBuV QP
Radiated Emissions 30MHz-230MHz: 40dBuV/m QP @ 10m
230MHz-1HHz: 47dBuV/m QP @ 10m
Fast Transient Burst Immunity 2KV 5/50nS Tr/Th
5KHz rep frequency
Surge Immunity Input only per EN50155
Direct Transients
1.8KV waveform 5/50us
Source impedance 100ohm
Conducted Radio Frequency Immunity 3Vrms carrier 150KHz to 80MHz 1KHz , 80% AM Source impedance 150 ohm
Variations & Interruptions of voltage supply Input only per EN50155
Unit complies with 45Vdc to 154Vdc (0.6 x 72V to 1.4 x 110V) operation continously Class S1: No interruptions
Radio Frequency Immunity 10V/Mrms carrier 80MHz to 1 GHz 1KHz 80% AM
Electrostatic Discharge 6KV contact discharge 8KV air discharge
MECHANICAL
General Chassis mount enclosure suitable for standalone use
Mechanical Outline L: 321.5L, W: 150mm H: S=86, F=87, H=104mm (without mating connector)
Mounting Centres 305mm x 100mm Suitable for 4 x M6 hardware
Protection Degree IP40 as per AS1939
Weight 2.5 kg unpacked
Technical Illustrations
Downloads
PB315_Rev_B_26-02-19_Datasheet.pdf
INPUT
Input voltage 45-154Vdc
Complies with power supplied from an accumulator battery with the nominal voltage of 72Vdc, 96Vdc, or 110Vdc as per EN50155:1996
Input current 15A
Inrush Current 25A at 110Vdc input
DC ripple factor 15% (EN50155 cl. 3.1.1.4)
PROTECTION
Input reverse polarity Indefinite, series diode on input.
Input fusing 15A, 500V (T) HRC ceramic 32 x 6.3mm fuse - internal
Input overvoltage (Shutdown) Approx 160Vdc, Auto recovery.
High input ripple Indefinite. Series diode on input.
Output short circuit PB315-24*-H: 24Vdc 33A
PB315-24*: 12Vdc 16.5A Indefinite. Auto recovery
Output overcurrent (Current limit) PB315-24*-H: 24Vdc 31A
PB315-24*: 12Vdc 15.5A Auto recovery on removal of over current
Output overvoltage (shutdown) 30-35Vdc Input power must be cycled off then on to restart
Over temperature 110C internal temperature. Auto restart after cooling down
OUTPUT
Output Voltage 24Vdc (23.76 - 24.24V)
Output Current PB315-24*-H: 20.8A
PB315-24*: 10.4A
Continuous power PB315-24*-H: 500W
PB315-24*: 250W See derating curve
Ripple voltage 100mV p-p
Line regulation 0.5% at full load
Load regulation 1.13Typ (1.0-1.5) %Vnom. 0% to full load measured before redundancy diode
Efficiency 90% at full load
Power dissipated PB315-24*-H: 55W at full load
PB315-24*: 27.5W
Redundancy diode 0.33 (0.2 - 0.7) Vdc
Hold up time See technical illustration
ISOLATION
Isolation Input to Chassis: 2121Vdc
Input to Output: 4242Vdc
Input to Output (M input connector): 3960Vdc
Output to Chassis: 707Vdc
Rated Insulation voltage Input: 154Vdc
Output: 25Vdc per IEC60077-1
Rated Impulse withstand voltage Input: 2.5KV
Output: 0.8KV per IEC60077-1
Overvoltage Category Input and Output: OV2 per IEC60077-1
ENVIRONMENT
Operating Ambient Temperature See technical illustrations
Cooling Natural convection No cold plate required
Relative Humidity 5% - 90% Non condensing
Degree of Pollution PD3 (Per IEC60077-1)
I/O INTERFACE
Input Output Terminal Code: * PB315-24 * (-H)
Input and Output: S 5 way screw T/B 40A/600V suitable for M4 ring lugs.
Input and Output: C 7 way cage clamp T/B 20A/300V suitable for 4mm2 wire
Input and Output: F 10 way 6.4mm male QC faston terminals
Input and Output: P Phoenix contact pn DFK-PC-15/5-STF-10,16 or similar 5W feed through terminal block with screw flanges Mating connector: Phoenix contact pn PC 6/5-STF-10,16 or equivalent 5W pluggable screw terminal block with screw flanges suitable for 6mm2 wire supplied with unit.
Input and Output: M MS3102E24-22P F80 panel mounted plug. 4 x #8AWG crimp contacts. MS service rating D Mating connector: MS3106E24-22S F80 straight receptacle, supplied with unit.
Ground Terminal M5 x 12mm stud
"ON" LED Option L: Green LED mounted on top cover. ON when output voltage is present
ELECTROMAGNETIC COMPATIBILITY
General Designed to comply with EN50121-3-2:2000 and EN50155:1996
Conducted Emissions (Input and Output) 150kHz-500kHz: 99dBuV QP
500kHz-30MHz: 93dBuV QP
Radiated Emissions 30MHz-230MHz: 40dBuV/m QP @ 10m
230MHz-1HHz: 47dBuV/m QP @ 10m
Fast Transient Burst Immunity 2KV 5/50nS Tr/Th
5KHz rep frequency
Surge Immunity Input only per EN50155
Direct Transients
1.8KV waveform 5/50us
Source impedance 100ohm
Conducted Radio Frequency Immunity 3Vrms carrier 150KHz to 80MHz 1KHz , 80% AM Source impedance 150 ohm
Variations & Interruptions of voltage supply Input only per EN50155
Unit complies with 45Vdc to 154Vdc (0.6 x 72V to 1.4 x 110V) operation continously Class S1: No interruptions
Radio Frequency Immunity 10V/Mrms carrier 80MHz to 1 GHz 1KHz 80% AM
Electrostatic Discharge 6KV contact discharge 8KV air discharge
MECHANICAL
General Chassis mount enclosure suitable for standalone use
Mechanical Outline L: 321.5L, W: 150mm H: S=86, F=87, H=104mm (without mating connector)
Mounting Centres 305mm x 100mm Suitable for 4 x M6 hardware
Protection Degree IP40 as per AS1939
Weight 2.5 kg unpacked
PB315_Rev_B_26-02-19_Datasheet.pdf

Find the Right Model

Model Number Input Voltage (Vdc) Output Voltage (Vdc) Output Current (A)
product variant PB315-24F-H 72/96/110Vdc: 45...154Vdc 24Vdc 20.8A
product variant PB315-24S-H 72/96/110Vdc: 45...154Vdc 24Vdc 20.8A
product variant PB315-24S-H-L 72/96/110Vdc: 45...154Vdc 24Vdc 20.8A

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