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. Magnetically Latched Contactors,
a.c.. magnetically latched contactors are very similar construction and dimensions to
the A.. standard contactors equal rating. Only the electro-magnet and coil have specific
design order achieve the latching and de-latching operations. operated
A lic n
These contactors provide safety function those circuits where standard contactors would
drop out the event faulty control circuit supply voltage, i.c.
They also provide energy saving function those circuits where contactors are used for an
uninterrupted duty, i.e..
AM110 AM185 AM300
Coil consum ption
Latching VA/W 230 350 1500
Holding VA/W 0
De-latching VA/W 150 300 800
Operating time
pick time 25-45 25-45 25-35
drop out time 30-50 30-50 30-50
Mechanical durability ops 000
Coil operating limits 0.
Operating coil diagram AM110, AM185 Operating coil diagram AM300
T ta
Same technical data for the A110, A185 and A300 contactors with the exception of:
- coil consumption
- operating time
- mechanical durability
- mounting positions: position and prohibited (see "Technical Data" for mounting position diagram). 6
ABB
1SFC101033D0201 ed.
The coil windings can energized from both a. distribution current carrying duty. and d...2, June 2008
.. and d.1 max
Min impulse length
ON 100
OFF 100
Pos..
Operation
- The contactor closes via the ON” circuit and the contactor held closed position by
the force from permanent magnet.c.85 min .e.
The operating coil built with windings which, when energized, create magnetic fields of
opposite directions.
The AM. supplies...c.
D n
The AM. 1.
- The contactor opens via the "OFF" circuit which eliminates the force from the permanent
magnet
- closing and opening the coil windings are automatically controlled through 35X 36X
and 43X 44X auxiliary contacts. excessive voltage drops or
control circuit voltage failures.. contactors have two resting positions, open position and latched position and
are delivered latched position
