ART960100.book Page 35 Vendredi, 7. juillet 2006 1:41 13
Functions and
characteristics
059009
The optional auxiliary contacts are used for
the following functions:
b indications
b early make and early break
b testing of the control/monitoring circuit
with power off.
The optional fuse monitor signals blowing of
standard fuses without strikers.
Auxiliary contacts and indications
Fupact INFp32 to INFp800
Auxiliary contacts
Auxiliary contacts can be used to remote switch-disconnector fuse status information
for indications and automated functions such as electrical interlocking.
Functions
b OF (NO/NC). Indicates the position of the switch-disconnector fuse poles
b CAM (early-make or early-break function): indicates the position of the
switch-disconnector fuse handle.
Used in particular for:
v CAO early-break contact (auxiliary contacts open before the main contacts), used
for example to automatically open a circuit breaker or a contactor before opening the
switch-disconnector fuse
v CAF early-make contact (auxiliary contacts close before the main contacts)
b testing of the control/monitoring circuit with power off. Simulates the closed
position of the switch-disconnector fuse poles for the switch-disconnector fuse
auxiliaries.
Standards
Compliance with international standard IEC 60947-5-1.
OF auxiliary contact.
Description
b NO contacts (positive opening)
b NC contacts
b NC/NO changeover contacts
b with just seven different auxiliary contact blocks, it is possible to implement all the
functions mentioned above. They are mounted on the switch-disconnector fuse.
059014
Blown-fuse indicator
Fuses with strikers must be used with this device which remotes the fuse-status
information. It serves to:
b signal a blown fuse
b protect motors from overloads caused by single-phase operation
b prevent the risks of abnormal voltages on the neutral.
NO and NC auxiliary contacts.
Fuse monitor
059029
This device remotes status information for standard fuses (without strikers).
It serves to:
b signal a blown fuse
b protect motors from overloads caused by single-phase operation
b prevent the risks of abnormal voltages on the neutral.
Support for NO and NC blocks.
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