Technical data

130
Protective Devices
xEnergy Power Circuit-Breaker
Technical data
NZMB1-A
Power circuit-breaker
Rated uninterrupted current A max. 160
Rated peak withstand voltage U
imp
Main current paths V AC 6000
Auxiliary current paths V AC 6000
Overvoltage category/Pollution degree III/3
Rated operating voltage U
e
V AC 690
Switching capacity
Rated short-circuit making capacity I
cm
240 V kA 63
400/415 V kA 53
440 V kA 53
525 V kA 30
690 V kA –
Rated short-circuit breaking capacity I
cn
, I
cu
according to IEC/EN 60947, switching sequence 0-t-C0
240 V kA 30
400/415 V kA 25
440 V kA 25
525 V kA 15
690 V kA –
Rated short-circuit breaking capacity I
cn
, I
cs
according to IEC/EN 60947, switching sequence 0-t-C0-t-C0
240 V kA 30
400/415 V kA 25
440 V kA 25
525 V kA 7,5
690 V kA –
Switching capacity I
u
NA-switch (UL489, CSA 22.2 No. 5.1)
240 V 60 Hz kA 35
480 V 60 Hz kA 25
600 V 60 Hz kA –
Category of use A
Rated making and breaking capacity I
e
Rated operating current AC-1
400/415 V A 160
690 V A 160
Rated operating current AC-3
400/415 V A 160
690 V A 160
Mechanical lifespan operations 20000 (max. 50% thereof released through A/U release)
Max. switching capacity operations/h 120
Electric lifespan
AC-1 at 400 V operations 10000
AC-1 at 690 V operations 7500
AC-3 at 400 V operations 7500
AC-3 at 690 V operations 5000
Current heat loss per pole at I
u
W13
Overload release, temperature compensation acc. to IEC/EN 60947, VDE 0660 Section 101, residual fault in the range of -25°C/+70°C
(reference temperature 40°C), thermo-magnetic %/K 0.7
Total off-duty time in case of a short-circuit ms < 10
Dimensions (mm)
➀ Distance to live elements ≥ 60 mm
Systems and cable protection with NZMB1-A