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5. Pilot Duty
One of the specifications in the “UL508
Industrial Control Equipment” regulations at
UL (Underwriters Laboratories Inc.), has to
do with the grade of contact control capacity
by NEMA (National Electrical Manufacturers
Association) standards. By obtaining both UL
and CSA approval for this grade, the product
becomes authorized publicly.
Pilot Duty A300
AC applied
voltage
[V]
Electrification
current
[A]
Input
power
[A]
Breaker
power
[A]
[VA]
120
10
60 6 7,200 720
240 30 3 7,200 720
During
input
During
breaker
Pilot Duty B300
AC applied
voltage
[V]
Electrification
current
[A]
Input
power
[A]
Breaker
power
[A]
[VA]
120
5
30 3 3,600 360
240 15 1.5 3,600 360
During
input
During
breaker
Pilot Duty C300
AC applied
voltage
[V]
Electrification
current
[A]
Input
power
[A]
Breaker
power
[A]
[VA]
120
2.5
15 1.5 1,800 180
240 7.5 0.7 1,800 180
During
input
During
breaker
CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: info@ctiautomation.net