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Phason OMNI Select Power Block (PBx-11)

MF #PBx-11
QC Part #
In stock
With eleven stages, this allows you to control virtually anything.

The PBx-11 is designed to control ventilation equipment for a single room. Power Blocks work with the Select Ventilation module of OMNI Select to control equipment according to your programmed settings.

The 11-stage control has two variable AC stages for controlling fans or heaters, two variable 0 to 10 VDC stages for controlling variable frequency drives, and nine relays for controlling equipment such as actuators, curtain machines, single-speed fans, heaters, and lights.


  • Central monitoring and control using Select Ventilation software
  • Programmable temperature set point, range: 14 to 122°F (-10 to 50°C)
  • Two variable AC stages
  • Two variable 0 to 10 VDC signal outputs
  • Nine general-purpose relays
  • One alarm relay (for external alarm system or siren)
  • Load Management – coordinates the startup sequence of PBx Power Blocks and relays
  • Optional four-probe temperature averaging
  • Four-digit LED display and status LEDs
  • Temperature probe; 30 feet, extendable to 500 feet
  • NEMA 4X enclosure (corrosion resistant, water resistant, and fire retardant)
  • CSA approval
  • Limited warranty (2 years)

Electrical Information:

  • Incoming Power: 120/230 VAC, 50/60 Hz
  • Variable Stages:
    • 10 A at 120/230 VAC, general-purpose (resistive)
    • 7 FLA at 120/230 VAC, PSC motor
    • 1/2 HP at 120 VAC, 1 HP at 230 VAC, PSC motor
  • Variable Stage Fuse: 15 A, 250 VAC ABC-type ceramic
  • Variable DC Stages: 0 to 10 VDC, 2K Ω load
  • Relay Stages:
    • 10 A at 120/230 VAC, general-purpose (resistive)
    • 1/3 HP at 120 VAC, 1/2 HP 230 VAC
    • 360 W tungsten at 120 VAC
  • Alarm Relay:
    • 0.4 A at 125 VAC, 2.0 A at 30 VDC, resistive load
    • 0.2 A at 125 VAC, 1.0 A at 30 VDC, inductive load
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