The Kussmaul Auto Pump® 12V HP, 125 PSI is a compact, vehicle-mounted air compressor designed to maintain air brake system pressure on fire apparatus, rescue vehicles, and other vehicles equipped with air brakes. During extended periods when the vehicle is parked, even small air system leaks can cause pressure to fall below the brake release threshold. The Auto Pump automatically monitors system pressure and activates as needed to restore proper pressure, helping keep the vehicle ready for immediate departure.

The pressure switch automatically starts the compressor when system pressure drops to 105 PSI and shuts the compressor off when pressure reaches 125 PSI. A built-in 15-amp circuit breaker provides electrical protection, while the pressure gauge allows personnel to quickly monitor system status. The compressor operates independently without interfering with the vehicle's engine-mounted air compressor.

An integrated Auto Drain system uses a 12V solenoid to automatically purge accumulated moisture from the water separator bowl each time the compressor cycles off. This automatic operation helps reduce routine maintenance requirements and eliminates the need for manual draining during normal operation. Sealed ball bearings provide long service life, while the compact vertical-mount configuration supports installation in limited vehicle spaces.

Features

• Vehicle-mounted 12V air compressor designed for vehicles equipped with air brake systems
• Maintains air brake system pressure while the vehicle is parked
• Compensates for air system leaks to help keep vehicles ready for immediate departure
• Automatic pressure switch operation senses low system pressure and restores proper pressure
• Factory-set pressure switch turns the compressor ON at 105 PSI and OFF at 125 PSI
• 20 PSI pressure differential
• Maximum pressure rating of 125 PSI
• Integrated Auto Drain automatically purges the water separator bowl after each compressor cycle
• 12V solenoid-operated drain reduces manual maintenance requirements
• Built-in 15-amp circuit breaker provides electrical protection
• Pressure gauge provides convenient system pressure monitoring
• Operates independently without interfering with the engine-mounted air compressor
• Sealed ball bearings provide dependable operation and long service life
• Compact vertical-mount design for vehicle installation
• Ideal for fire apparatus, rescue vehicles, and other air brake-equipped emergency vehicles

Specifications

• Manufacturer: Kussmaul Electronics
• Product Type: Vehicle-Mounted High-Pressure Air Compressor
• Model: Auto Pump® 12V HP, 125 PSI
• Input Voltage: 12 VDC
• Maximum Input Current: 11 Amps
• Maximum Pressure: 125 PSI
• Factory-Set Cut-In Pressure: 105 PSI
• Factory-Set Cut-Out Pressure: 125 PSI
• Pressure Differential: 20 PSI
• Output: 0.30 SCFM at 80 PSI; 0.35 SCFM at 60 PSI
• Circuit Protection: 15-Amp Circuit Breaker
• Auto Drain: Included
• Drain Operation: Automatic Upon Compressor Shutdown
• Mounting Orientation: Vertical
• Weight: 6 lbs.