Eaton IZM32 Instruction Manual page 44

Section 5: Protective characteristic curves
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
900
800
700
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
.9
.8
.7
.6
.5
.4
.3
.2
.1
.09
.08
.07
.06
.05
.04
.03
.02
.01
Notes:
1. Nominal reduction values have a tolerance of ± 20%.
2. The nominal Arcfault Reduction Maintenance System
3. The Maintenance Mode feature must be ENABLED via setting Maintenance Mode switch to ON position
remote switch, or communications for these curves to apply.
Maintenance Mode is in use being shown by blue LED.
4. The PXR will light the Instantaneous LED for a Maintenance Mode Trip.
5. The end of the curve is determined by the interrupting rating of the circuit breaker.
6. Curves applies from -20 C to +50
0
7. This curve is for 50Hz ,60Hz applications.
8. These curves are comprehensive for series IZM circuit breakers including all frame sizes, ratings, and constructions.
The total clearing times shown include the response time for trip unit, the breaker opening and the interruption of the current.
40 IZM32 / IN32 low voltage air circuit breaker MN013017EN May 2022 www.eaton.com
6
2.5
4
trip time is 40ms with auxiliary power supply.
TM
C ambient. Temperatures above +85
0
8
10
RMS Current (kA)
C will cause over temperature trip.
0