Viair 400C Heavy Duty Air Compressor - (Duty Cycle 33% @ 100 psi) - # 40040

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Viair #40040

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The 400C is a 33% duty cycle compressor that works quickly and efficiently putting out a massive 2.54 CFM flow at zero PSI head pressure. Features include a standard 1/4" tainless steel braided leader hose with inline check valve and insulated wiring for simple installation.

This "C" series compressor is turned on with a pressure switch (sold separately) installed in an air supply tank (sold separately). Supplied is a stainless steel leader hose with a threaded hose end that installs into an air supply tank. For direct inflation of tires or other inflatable objects via an air hose see the "H" series or Portable models of Viair air compressors

Features and Benefits

  • 12-VOLT
  • Designed to be used with an air supply tank
  • 1/4" Stainless Steel Braided Leader Hose included
  • Permanent Magnetic Motor
  • Sealed design - Moisture & Dust Resistant
  • Oil-less Design
  • High Performance PTFE Piston Ring
  • Stainless Steel Valves
  • Gearless Direct Drive Motor
  • Anodized Aluminum Alloy Cylinder
  • Automatic Reset Thermal Overload Protector
  • 1 year manufacture warranty

Installation Notes

Note: A 150 PSI or lower pressure, non-adjustable pressure switch must be used with this compressor.
Voltage: 12-Volt
Duty Cycle: 33% @ 100 PSI
Max Working Pressure: 150 PSI
Max Amp Draw: 26 Amps
Min. Ambient Temp: -40 degrees F
Max. Ambient Temp:: 158 degrees F
Dimensions: 9" L x 4" W x 7" H
Net Weight: 8 lbs.

Duty Cycle Reference Chart

Duty Cycle: 100 PSI @ 72F
Max. Run Time / Min. Rest Time
10% Duty Cycle 3 Min. On / 27 Min. Off
15% Duty Cycle 6 Min. On / 34 Min. Off
20% Duty Cycle 8 Min. On / 32 Min. Off
25% Duty Cycle 10 Min. On / 30 Min. Off
30% Duty Cycle 13 Min. On / 30 Min. Off
33% Duty Cycle 15 Min. On / 30 Min. Off
100% Duty Cycle Continous Duty @ 100 PSI @ 72F

This compressor has a duty cycle of 33%

Note: Duty cycle refers to the amount of time a compressor can be operated in given time period at 100 PSI, at a standard ambient temperature of 72 degrees F. Duty cycle is commonly expressed in percentage format. The higher the percentage the longer run time. For more "frequently asked questions" on compressors see Viair FAQ Page.  

Fill Rates

2.5 Gallon Tank
Fill Rate
0 to 105 PSI 1 min 27 sec
0 to 145 PSI 2 min 20 sec
85 to 105 PSI 17 sec
110 to 145 PSI 48 sec
5 Gallon Tank
Fill Rate
0 to 105 PSI 2 min 55 sec
0 to 145 PSI 4 min 50 seconds
85 to 105 PSI 35 sec
110 to 145 PSI 1 min 40 sec

Performance Data

PSI
CFM
A
0 2.54 16
10 2.26 18
20 2.12 21
30 1.94 22
40 1.84 23
50 1.70 24
60 1.62 25
70 1.55 25
80 1.48 26
90 1.41 26
100 1.27 26
110 1.20 26
120 1.09 26
130 0.95 25
140 0.85 25
150 0.71 25

PSI = Pounds per squre inch - A measure of air pressure generated by an air compressor. CFM = Cubic feet per minute - Volume of air produced by the air compressor at a given pressure or PSI. A = Amps - A measure of the amount of electrical current used.

Weight: 15 lbs.
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