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Engineering
12
10/12 MN04913001Z-EN
Table 1: B
10d
values for contactors
The MTTF
d
time of the contactor is calculated according to
formula 2 with the mean annual number of switch opera-
tions depending on the application.
Contactor B
10d
value
Utilization category
AC-3 Utilization category
AC-4 Utilization category
AC-1
[Mill. switch opera-
tions] [Mill. switch opera-
tions] [Mill. switch opera-
tions]
DILM7 1.3 0.2 0.6
DILM9 1.3 0.2 0.6
DILM12 1.3 0.2 0.6
DILM15 0.75 0.2 0.6
DILM17 1.3 0.2 0.6
DILM25 1.3 0.2 0.6
DILM32 1.3 0.2 0.6
DILM40 1.3 0.2 0.6
DILM50 1.3 0.2 0.6
DILM65 1.3 0.2 0.6
DILM72 0.75 0.2 0.6
DILM80 1.3 0.2 0.6
DILM95 1.3 0.2 0.6
DILM115 1.3 0.2 0.6
DILM150 1.3 0.2 0.6
DILM170 0.75 0.2 0.6
DILM185 1.3 0.04 1.2
DILM225 1.3 0.04 0.6
DILM250 1.3 0.04 0.4
DILM300 1.3 0.04 1.7
DILM400 1.3 0.04 1.2
DILM500 1.3 0.04 0.3