Thermal Cutout/
Regulator/Limiter
FEATURES
– Precision switching
– High sensitivity
– Broad application
– Wide range of housings, connections and fixings
– Designed for dirty situations
A3
A3A
A3K
A3K2
A3K3
DESCRIPTION
Types A3, A3D, A3L, A3DL, A3DS, A3A, A3DA, A3SD, A3AS, A3K,
and A3K1 are designed for operations as thermal cutouts, tempera-
ture regulators or overheat protection.
Type A3K2 is a double pole thermal cutout or over-temperature
protector.
Type A3K3 is a thermal cutout or temperature regulator with a fuse.
Types A3B, A3LB, A3AB, AKB and A3KB are thermal limiters (with
manual reset).
The thermal response system operates by means of a bimetal snap-
disc acting on a switch contact without any electrical connection.
The system is insensitive to current, and reacts to external thermal
influences.
Plastic housing, base-plate and mounting lug are all voltage-free.
Heat transfer is effected directly through the plastic/metal housing or
solid media, and indirectly by convection, radiation and conduction in
the case of gaseous media.
APPLICATIONS
Temperature monitoring and control,
Temperature limiting and indication
in electrical appliances, industrial plant,
machinery and equipment, process engineering.
e.g.
cookers
coffee machines
hotplates
heaters
egg cookers
vacuum cleaners
radiators
domestic appliances
ironing machines
water heaters
electrical equipment
electric blankets
welders
oil heaters
foot warmers
thyristors
plate warmer
C A NTHE RM
8415 Mountain Sights Avenue • Montreal (Quebec), H4P 2B8, Canada
Tel: (514) 739-3274 • 1-800-561-7207 • Fax: (514) 739-290
E-mail : sales@cantherm.com • Website: www.cantherm.com
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