TECHNICAL PARAMETERS NXA Air Circuit Breaker
Frame Size
1600A
Rated current (A)
400 630 800 1000 1250 1600
Rated current of the fourth pole (A)
400 630 800 1000 1250 1600
Number of poles
3 and 4
Type of the Circuit Breaker
N
S
H
Rated ultimate short circuit breaking capacity (kA rms) VAC 50/60Hz Rated service breaking capacity (kA rms) VAC 50/60Hz
Icu
380/400/415V 440/525/690V 380/400/415V 440/525/690V 380/400/415V 440/525/690V 380/400/415V 440/525/690V 380/400/415V 440/525/690V
50 30 42 30
42 36 42 36 42 36 25 -
50 36 50 36 42 36 25 -
Ics
Utilization category
B
Rated short-time withstand current (kA rms) VAC 50/60Hz
Icw 1s
42 30 20 -
Icw 3s
Rated making capacity (kA) VAC 50/60Hz
Icm
105 63
88.2 75.6
105 75.6
Making current tripping protection function (MCR kA ms)
10
16
16
Breaking time (ms)
32
Closing time (ms)
70
Installation, Connection and Service Life Service life C/O cycle
Mechanical With
30000
maintenance Without maintenance Without maintenance
15000
Electrical
8000
Connection
Horizontal
•
Dimensions (Width x Depth x Height) in mm
Fixed type 3P
254 x 243.5 x 318.5
4P
354 x 243.5 x 318.5
Draw-out type
3P
308 x 331.5 x 351
4P
378 x 331.5 x 351
Powered by FlippingBook