Watlow PC1X-N20, User Manual

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Power Series Output Rating Curves
Fan Cooled
All curves are at 100% on with 90°C rated load wire and line wire connected. Note that each
chart is slightly different on the amperage scale. The safe operating region is from 1 amp up
to the specific curve for the output amperage code selected. For example: F25 Single-Phase is
rated up to 200 amps at 50°C; F30 Single-Phase is rated for 250 amps at 50°C. See page 2.6
for Natural Convection Cooled output rating curves.
Watlow Power Series Installation I 2.5
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Current (amps) into a Resistive Load
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Ambient
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e in °C
3-Phase, 3-Leg and 3-Zone Multizone
Fan Cooled at 100% On
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Current (amps) into a Resistive Load
Enc
losur
e Int
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nal
Ambient
T
emper
at
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e in °C
3-Phase, 2-Leg and 2-Zone Multizone
Fan Cooled at 100% On
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130
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150
160
170
180
190
200
210
220
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250
260
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35
30
25
Current (amps) into a Resistive Load
Enc
losur
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nal
Ambient
T
emper
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Single-Phase Fan Cooled at 100% On
F20
F30 F25
F35
F20
F30 F25 F35
F20
F30
F25