SBS Exhaust Ventilation Fan

Hydrogen Gas Ventilation for Battery Rooms

Meet battery room ventilation safety requirements and create an automated hydrogen gas ventilation system using the SBS Exhaust Fan in conjunction with the SBS-H2 hydrogen gas detector. This 12" x 12" fan automatically vents out dangerous hydrogen gas that builds up in battery charging rooms/areas.

The flexible fan design, featuring a sliding collar, works on walls between 1.5" and 8" thick, allowing for easy installation. The fan is weather resistant due to fixed external louvers with motor-driven internal louvers.



  • When connected with the SBS-H2 relays, the hydrogen ventilation process is automated and does not require monitoring by personnel
  • Inexpensive protection that may help to reduce insurance premiums
  • Energy efficient, operating only when triggered by SBS-H2 detector
  • Meets NFPA Class I Div. 2 “B”
  • Can be installed to comply with the National Electric Code (NEC) Section 480.9 (A) and IEEE Std. 450 for ventilation of battery rooms


  • 850 CFM wall-mounted ventilation fan for use with SBS-H2 hydrogen detector
  • Fixed external rain louvers
  • Motorized internal louvers are locked open when fan is operating, locked closed when fan is stopped
  • Non-sparking and contactless, suitable for areas with potential H2 buildup
  • LED status display
  • Simple installation with sliding collar
Ordering Information
Part No. Description
H2FAN-12x12-110VAC 12" x 12" Exhaust Fan, 110 Vac Input
H2FAN-12x12-24VDC 12" x 12" Exhaust Fan, 24 Vdc Input
H2FAN-12x12-48VDC 12" x 12" Exhaust Fan, 48 Vdc Input


Weight 18.000000
Mounting Rough opening: 12.25" x 12.25" (311 x 311 mm)
Wall thickness: 1.5" to 8" (38 x 203 mm)
Power Supply(s) 110 Vac, .67 Amps (80 Watts)
24 Vdc, 3.5 Amps
48 Vdc, 1.7 Amps
Airflow 850 CFM
Dimensions 12" L x 12" W x 9.5" D (305 x 305 x 241 mm)


SBS Exhaust Fan Drawing Diagram

SBS Exhaust Fan Wiring Diagram

N56 W16665 Ridgewood Dr. Menomonee Falls, WI 53051
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