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.
hotplates
vacuum cleaners
ironing machines
electric blankets
foot warmers
cookers
heaters
radiators
water heaters
welders
thyristors
coffee machines
egg cookers
domestic appliances
electrical equipment
oil heaters
plate warmer
Thermal Cutouts A3
03-02-02
1000-Y-397e
CANTHERM
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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