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

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	8 amp DC to DC converter
Part Number and Price	PSEC-738HS Replaces the PSEC-737HS $1200	PSEC-638HS Replaces the PSEC-637HS $938
Cable with connector	Cable and connector PSEC-68-0749-6 $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

PSEC-738HS drawing:

drawing of the 850W DC converter showing dimensions

PSEC-638HS drawing

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

Wide input voltage range suitable for 12 Volt, 24 Volt and 28 Volt systems.

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