Meter No. 150
This meter was fitted at P.M.B.X. installations as a totals meter.  It cannot be reset.

It records 99999 metering pulses.

It required a Metering-Unit No. 3 to operate the meter when used on subscriber sites.

Meter No. 150A - 20-30volts DC - Coil resistance 500ohms.
Meter No. 150C - 45-55volts DC - Coil resistance 230ohms.
Meter No. 150D - 45-55volts DC - Coil resistance 4.1ohms.

Dimensions
L 112.7mm x W 27mm x H 25.4mm.

Click here for metering schemes and apparatus required - Telephones, PBX B3104

 

 
 
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Last revised: September 24, 2025

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