Datasheet

AMETEK Prestolite Switch, Ipswich Rd, Cardiff, CF23 9XP, United Kingdom
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Certificate No. FM2258
BSEN ISO 9001
Design and Build
Contactor Pairs
The contactors can be mounted in
pairs on a bracket together with
inter-connecting electrical links, of
which the JAM & JAV contactors
are designed for motor reversing.
The JAM type has an inbuilt
failsafe so that if both coils are
energised together the contact
design creates an open circuit. The
JAV types are designed to have
fast drop-out times (approx
5m.sec.) and slower pull-in times
(approx 20m.sec.). This allows for
motor direction changes to be
undertaken without the risk of all
contacts being closed at the same
time. However certain types of coil
suppression such as diodes
substantially increase drop-out
times and care must be taken to
ensure suitable suppression is
fitted, e.g., diode and resistor in
series or varistor.
Contactors in Series
Dimensional Details
Magnetic Blowouts
The single pole types of contactor
can be fitted with permanent
magnetic blowouts. These allow the
contacts to switch D.C. voltages
higher than 48 D.V.C.
The fitting of blowouts makes the
contacts polarity sensitive and the
Positive marking on the top cover
must be observed.
Auxiliary Contacts
A double circuit normally open,
normally closed microswitch can
be fitted which has a D.C. resistive
rating of 5 Amperes at 24V.
N.B. Auxiliary contacts cannot be
fitted to the JAM & JAV types of
contactors.
Large tips
For applications where severe
conditions exist, e.g. pump motor
switching, all types are available
with larger tips. The suffix “L”
denotes larger contact tips.
JAD4600 Series
JAV4600 Series
The contactors can be mounted either
horizontally or vertically. If mounted vertically
the contact studs must point upwards