Bauer UNICUS® 4S

Model: UNICUS® 4S

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Features & Specs


101" x 38" x 80"


4350-4550 lbs


Up to 6000 PSIG (414 BAR)

Charging Rate

13 to 26.4 SCFM (368 to 748 L/MIN)


10 to 20 HP (7.5 to 15 kW)


The UNICUS® 4S is available in either 5000 or 6000 psig with discharge capacities ranging from a 13 scfm charge rate to 26 scfm charge rate. Unsurpassed maintenance accessibility abounds as we have provided all access doors with snap pin technology – pull the pin and lift the door, no hand tools are required. Should you require access to the back of the operations panel, no problem: the panel tilts forward. All requisite panels are equipped with sound attenuated material. An integral rack was built to accommodate four (4) storage cylinders as standard, along with the piping. Additionally, we provide two (2) ASME coded air storage cylinders as a part of the standard scope of supply. If you want to dress your unit up in concert with the fire department theme, ask about our Fire Edition package. When your department needs the best all-in-one compressor system on the market today, backed by a global network of service partners, look to BAUER.


  • CO monitoring system
  • H2S monitoring system with audible alarm
  • 100 ft high pressure cabinet enclosed hose reel
  • Additional air storage cylinders
  • Panel mounted remote fill hose connection
  • Dual Fill/3 position
  • Tri Fill/3 position


  • BAUER breathing air purification system with SECURUS
  • BAUER PLC based controller with 7” color HMI touchscreen display
  • NEMA 4 rated electrical enclosure with UL® listed control panel
  • Compressor low oil pressure and high temperature safety shutdowns
  • Emergency stop push button
  • Hinged cascade fill control panel with Lexan laminate air flow/fill schematic
  • Audible alarm on safety shutdowns
  • Inlet filter maintenance indicator
  • Automatic condensate drain system with non-corrosive condensate reservoir and integrated float sensor and automatic “Full” indication and compressor shutdown
  • Two (2) ASME code stamped air cylinders installed in an integral rack designed to hold four cylinders
  • Sound attenuating enclosure with slam-action latches and lift-off type hinges
  • NFPA 1901 2016 edition compliant 3 position containment fill station accommodates SCBA or SCUBA cylinders up to 31” overall length

Bauer Breathing Air Catalog

Frequently Asked Questions

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging and must have the original tags attached. Prior to shipping the product back please email us at [email protected] and we will send your further steps on how we can help complete your request. Please click here to see our full Refund and Return Policy.

Orders are usually shipped out within one business day of receipt of payment. Note that all Friday orders will be processed the following Monday. UPS requires a physical address, P.O. Box addresses will not be shipped with this carrier. Shipment notification will be sent via email and tracking information will be included when applicable.