QWIKBUS SWITCHING POWER SUPPLY

USED TO POWER THE QWIKBUS SP333 CONTROLLER UNIT AND/OR VSP333 4-ENTRANCE MODULE

Model #: SNT333
Spec Sheet Preview: The Alpha Communications® / S.T.R.™ SNT333  Switching Power Supply is used only with the 2- wire QwikBUS™ series intercom and/or  video-intercom  systems. The SNT333 provides the regulated 24VDC power needed to control the SP333  QwikBUS™ intelligent controller. Each SNT333 gets its power from a customer  supplied power cord, and will operate on an input  of 100 to 240VAC. Each 2-wire QwikBUS™ system requires a minimum of one SNT333 Switching Power Supply.
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Outside Dimensions:
3.15"W x 3.75"H x 2.25"D
(80mm W x 95mm H x 57mm D)

System-Specific Information

AlphaECall™ 200 Series Non-Voice Emergency-Call System - NON U.L.

See System Installation Manual: AWD235 for more complete wiring information.

QwikBUS™ 2-Wire LOOP Multi-Unit COLOR Video-Intercom System

From monitor to monitor, and to system power supply unit(s), run 2 common wires (looped). Wire gauge and specs. Will depend on the length of the cable run and the number of monitors on the cable run. See QwikBUS™ system wiring manual for more information.

QwikBUS™ 2-Wire LOOP Multi-Unit Entry Intercom System

From monitor to monitor, and to system power supply unit(s), run 2 common wires (looped). Wire gauge and specs. Will depend on the length of the cable run and the number of monitors on the cable run. See QwikBUS™ system wiring manual AWD121 for more information.

Architects & Engineer's Specs

The Switching Power Supply unit(s) shall be Alpha Communications® / S.T.R.™ QwikBUS™ model SNT333, or approved equal. The SNT333 shall be built into a rugged high impact ABS plastic case, and shall be powered a contractor supplied power cord. Contractor shall furnish the proper C333-2 connecting cable to connect to the  SP333 intelligent controller and to the model T1240 (12VAC) power transformer.

Low voltage wiring shall be used and positive screw terminal and plug-in connectors shall be provided for installation wiring. The SNT333 shall be mountable right to the surface of the wall or in a customer-supplied junction box cabinet (model# CEC152 or equivalent).

Contractor shall observe all local and national electrical and building codes.

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