PNOZ X4
Operating Manual PNOZ X4
19894-EN-07
31
Service life graph
The service life graphs indicate the number of cycles from which failures due to wear must
be expected. The wear is mainly caused by the electrical load; the mechanical load is negli-
gible.
Example
} Inductive load: 0.2 A
} Utilisation category: AC15
} Contact service life: 4 000 000 cycles
Provided the application to be implemented requires fewer than 4 000 000 cycles, the PFH
value (see Technical details) can be used in the calculation.
To increase the service life, sufficient spark suppression must be provided on all output
contacts. With capacitive loads, any power surges that occur must be noted. With DC con-
tactors, use flywheel diodes for spark suppression.
Order reference
Product type Features Connection type Order no.
PNOZ X4 24 VDC Screw terminals 774 730
PNOZ X4 24 V AC Screw terminals 774 731
PNOZ X4 110 V AC Screw terminals 774 734
PNOZ X4 115 V AC Screw terminals 774 735
PNOZ X4 120 V AC Screw terminals 774 736
PNOZ X4 230 V AC Screw terminals 774 738
PNOZ X4 240 V AC Screw terminals 774 739
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