9-4 Derating for Ambient Temperature and Altitude
Derating for Ambient Temperature
Derating for Altitude
110
105
100
95
90
85
80
75
70
0
Chapter 9 Specification MS300 (IP66 / NEMA 4X)
Derating for Altitude
500
1000
Altitude (m)
9-7
Standard Ambient Temperature:
C
40
for IP66 / NEMA 4X / UL Type 4X
1500
2000
2500