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PX3300 range


PRIVATE AUTOMATIC TELEPHONE EXCHANGES

P.A.X.

PX3300 SERIES

CAPACITY 50 LINES


The PX3300 series has been designed to give maximum flexibility. The units are of the extensible type, which can be initially equipped for any required number and can later be extended, as desired, simply by the addition of further equipment or units. For example, a 100-line exchange is formed by installing two units operating in conjunction with each other. For extensions above 100 lines, group selector equipment is provided in addition to the line units.

The apparatus is mounted on a steel frame which is enclosed in a floor-pattern cabinet of polished hardwood. The glass-panelled front is hinged and provided with a lock. A lift-out panel at the rear gives access to wiring.

Each telephone is connected to the unit by means of a twin conductor, suitable instruments being the ST1500, ST1600, ST2500, ST2600, ST3500 and ST3600 ranges.   Alternatively, use can be made of the loud-speaking telephone MT3101 and MT 3102.

Power Plant
A.C. Mains supply up to 250 volts: a 50-volt battery is provided together with a rectifier and charging panel.

D.C. Mains supply up to 250 volts: two suitable 50-volt batteries are provided, together with a control panel fitted with the necessary instruments, switches and fuses to enable one battery to be charged through a resistance while the other is supplying the exchange.
 

CAT No. LINE CCT LINK CCT DIMENSIONS
APPROX (INCHES)
WEIGHT (lbs)FULLY EQUIPPED
WIRING EQUIP WIRING EQUIP
PX3325 50 25 6 3 73 x 31 x 20 500
PX3330 50 30 6 4 73 x 31 x 20 500
PX3340 50 40 6 5 73 x 31 x 20 500
PX3350 50 50 6 5 73 x 31 x 20 500




Taken from the GEC Catalogue No. 18/4 (published between 1946 - 1955)

 
 
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Last revised: January 27, 2011

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