BB50 Breather Box (4-outlet)

Manufacturer: Air Systems
Part Number: BB50
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If IDLH work environments exist, the the Auto-Air™ Breather Box™ option should be considered. The Auto-Air™ filtration system was developed to provide Grade-D breathing air with full automatic reserve air in the event of either electrical failure or reduced pressure from the main air source while working in hazardous environments. Reserve air activation occurs a 60psi and/or loss of electrical supply, the system automatically switches to the reserve air cylinder(s). Local and optional remote alarms signal the workers that the primary air system has failed and has switched to the back-up air system. The Auto-Air™ feature is offered in electric or pneumatic versions. Note: IDLH conditions require the use of a pressure demand respirator with at least a 5 minute escape cylinder.


  • 2.75”H x 6.57”L x 5.1”W


  • 2.8 LBS. (1.27KG)


  • Extruded aluminum - Anodized black


  • 115 VAC and/or 9 - 16 VDC


  • Internal RFI/EMI filters


  • 115 VAC 1 amp fast acting

Operating Temperature

  • 4 to 113 degrees F (-15.5 to 45 degrees C)

Humidity Range

  • 10% to 90% RH

Flow Requirement

  • 50 - 100 cc


  • 3 digit LCD (CO concentration)

Test Circuit

  • Manually activated

Sensor Type

  • Sealed electrochemical sensor for Carbon Monoxide


  • +/- 1% full scale


  • 90% in 10-15 seconds

Detectable Range

  • 0 - 200ppm CO


  • Manual CO zero and span adjustments

Alarm Setting

  • 10ppm CO (5ppm Canadian)

Warning Signals

  • Normal operation - Green light
  • High CO - Red Light
  • High CO - Audible Alarm
  • Low Battery - Amber Light


  • 2 years from original date of purchase