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August 6, 2020

Industrial marine and military grade waterproof IP676 12V and 24V to 36V DC/DC Converters 20 Amp 850 Watt, or 10A 450 Watt

More DC/DC converters with 12VDC input and 1.5V, 5V,  6.5V, 8V, 10V, 11V, 12V, 13.8V, 14V, 15V, 16V, 18V, 19V, 20V, 21V, 48V, 27V, 36v, or 48V output
More DC/DC converters with 12V input
850 watt DC/DC converter 12V to 28V PSEC-638HS DC converter 12V to 36V

These IP67 rated DC-DC converters are not hermetically sealed, but they are fully IP676 ingress protected, including immersion. They have a wide operating temperature range, and use a single military style circular bayonet connector which contains both input and output terminals. The wide input voltage range allows use in 12V or 24V systems, and designed to allow the use of 36 volt equipment in 12 volt, 14 volt, and 24 volt vehicles, marine, military, boat, yacht, PLC, and cell tower applications. These are attractive, reliable, robust DC/DC converters good for fork lifts, off-road, construction and recreational equipment. They are relatively immune to vibration and shock.

To determine the output amps you need just add up the watts of all the equipment and divide by 36V.

These converters are fully isolated and can be used for all 12 volt and 24 volt systems, including negative ground, positive ground, and floating ground installations.
36V DC-DC Converters 15 Amp
DC to DC Converter
12V to 36V DC/DC converter, heavy duty  waterproof
8 amp
DC to DC converter
15 amp waterproof DC/DC converter
Part Number
and Price
Replaces the PSEC-737HS
Replaces the PSEC-637HS
Cable with connector Cable and connector
$295 each
The cable and all parameters are the same except where listed below
Connector only CA3106E24-11SB NATO connector without cable
$110 each
One cable is used
Nominal Input Voltage 12VDC and 24VDC  
Input Voltage range 10.5 to 32VDC  
Max Input current at No Load <220 mA <150 mA
Output voltage 36V 36V
Output voltage adjustment by removing the front plage 32 VDC to 42 VDC  
Max Output Current(s) 20 Amps for output voltages set between 32V and 42V 10A for output voltages adjusted to 32V and 42V
Max Output Power; the actual output current depends on the ratio between the input and output voltages. Maximum Output power =
Vout * 20 amps
For example 42 volts * 20 Amps = 840 Watts
Vout*10 amps
Max Output Power (continuous) 850W 450W
Output current limit? 110% of maximum current with continuous automatic retry, 1000W peak for short pulses Short pulses up to 550W
Operating Temperature Range at 100% load -40°C to +70°C  
Operating humidity 0-100%  
Efficiency >92 % at 50% rated power
>88% at full rated power
Load Regulation <250mV with remote sensing  
Maximum input current 71A at 11.5Vin, 25.5Vout 36A at 11.5V in, 26V out
Switching frequency kHz  
Output ripple noise <50 mV rms  
Isolation Fully isolated between input and output 2500VAC rms
Housing to input >1800VAC
Housing to output >1800VAC
Remote power on/off Yes, through grounding a wire on the connector  
Remote voltage sense Yes. through two sense wires on the connector  
Ingress rating IP676, (dust tight, immersion up to 1 meter depth, 1 Joule mechanical impact energy)  
Connections Mating connector is the Canon 3106E24 - 11SB. See the connection diagram below  
Protection Low input voltage < 10.5 +/-0.3 VDC,
High input voltage > 32.0 +/- 1.0 VDC
Over temperature by internal thermostat, self resetting
Cooling Through convection and the baseplate  
Dimensions 14.62 x 7.75 x 2.95 inches
37 x 20 x 7.5 cm
8.62 x 7.75 x 2.95 inches
21.9 x 20 x 7.5
Fuse can be accessed by removing the front cover ATC-30  
Drawings See below  
Weight 5.5 kg (12 lbs) 3.2 kg (7 lbs)
Audible Noise None  
Warranty 2 years limited warranty for parts and labor  

remote sense configuration

PSEC-738HS drawing:

drawing of the 850W DC converter showing dimensions

PSEC-638HS drawing

drawing of the 450 watt converter

connection diagram

OEM Battery Chargers Heavy Duty, High Current Switchmode 12VDC/ 36VDC Converters.

Universal Power Input OEM Power Supplies and OEM Battery Chargers Wide input voltage range suitable for 12 Volt, 24 Volt and 28 Volt systems.

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