VTC805 Series Manual
1010
Specications
Input
Nominal Voltage
12 VDC
Actual Voltage 11-16 VDC
Input Amps
100.0 A Max
Noise in Input < 50mV Peak to Peak
Input Fuse None, external fuse required
Output
Nominal Voltage
24 VDC
Actual Voltage 27.2 ± 0.05 VDC
Output Amps 35.0 Continuous / 40 A (Peak)
Output Voltage Crowbar 32.0 ± 1.0 VDC
Switching Frequency 60 ± 2.0 KHz
Duty Cycle
Continuous: 100% for 24 hours per day 
Peak: 20% for 10 min max 
Efciency
> 85% @ Maximum Output
Idle Power <10 Watts
Transient Response <2V for 50% Surge
Regulation (Line & Load) < +/- 0.5%
Mechanical
Length 16.3 in / 41.4 cm
Width 8.4 in / 21.3 cm
Height 3.9 in / 9.9 cm
Clearance 1.0 in / 2.5 cm all around 
Weight 16.0 lbs / 7.3kg 
Material and Finish Marine Grade Black Anodized Aluminum 
Fasteners
18-8 Stainless Steel
Connections 
DC Input/Output: Marathon ST722B2502UH connector Power Stud Blocks with 1/4” - 20 Studs, 175 
Amp, 300V Rating c/w Protective Snap On Cover
Environmental and Safety
Operating Temperature Range
25°C to +40°C: Continuous Operation (Standard Models)
-40°C to +55°C: Continuous Operation (Option X wide temperature Models)
Operation at reduced power to +85C (All models)
Storage Temperature -55°C to +105°C
Isolation Input-Case and Output-Case: 500 VDC, Input-Output: None, Common Negative
Humidity 0 - 95% Relative Humidity (non-condensing) with standard conformal coating
Audible Noise < 42 dB @ 3 ft/ 1m with fans running
Typical Service Life
> 10 years (87,600 hrs)
Warranty Three years parts and labor
Safety Complies with FCC Class B, Part 15
Note: Specications are subject to change without notice.










