Coil Specifications

For the large size brakes.

MODEL 24 Volt Coil
Input
 Current 

(amps)
at 68°F at 160°F
 Resistance 
(ohms)
 Volts   Resistance 
(ohms)
 Volts 
KB-2.5 1.3 16.2 21 19.5 25
KB-5 2 9.5 19 12 24
POB-100F 2.4 8.2 20 10 24
POB-200F 2.7 7.9 21 9.5 26
POB-400F 3.5 6.9 24 8.3 29
PLB-50 1.25 16 20 19 24
PLB-100 2 10.5 21 12.5 25
PLB-200 2.4 8.2 20 10 24

The coil resistance rises with temperature, so higher voltage is needed when the coil is hot, to maintain the same input current.

This is due to the nature of copper (wire in the coil) -- resistivity rises with temperature.


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