ERICSSON
SWITCHBOARD No's N640 - N652
Magneto Floor Switchboards
 

n644.jpg (17617 bytes)The open type floor pattern switchboards on cast-iron stands are very convenient and all apparatus and parts are readily accessible for maintenance.

N644 shown pictured to the right.

Woodwork matt polished, the jack field covered with fibre and the cast-iron stand black enamelled.

Equipped with individually-mounted line drop indicators and jacks, speaking and ringing keys and clearing drop indicators in the cord circuits, night bell, switch, micro-telephone, generator and a key for switching on power ringing when installed.

Special fitments are:-
Three keys, respectively for speaking, ringing by generator, and ringing by battery, on the answering or calling cord separately when the ordinary cord circuit key is in the speaking position. A key for testing for earth on the lines and a jack for testing the cords.

Code No.   Lines   Cord Circuits   Dimensions ins   Weight lbs.
N640   20   5   58 x 16 x 25   127
N641   25   5   58 x 16 x 25   129
N642   30   6   58 x 16 x 25   133
N643   40   8   61 x 22 x 25   144
N644   50   10   61 x 22 x 25   162
N645   60   10   61 x 22 x 25   165
N646   80   12   68 x 26 x 25   194
N647   100   12   68 x 26 x 25   199
N650   100   18   63 x 38 x 25   230
N651   160   20   65 x 38 x 26   243
N652   200   24   72 x 42 x 28   265

N650, N651 and N652 are two position switchboards and are provided with double the operating equipment's.

 

Taken from the Ericsson catalogue, edition 26

 
 
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Last revised: November 24, 2025

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