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Open Frame Thermostats

Heater Protection

These thermostats are specificaly designed for electrical appliances, such as hair dryers, hairdressing equipment, cooking equipment, air heaters. These are factory calibrated bimetals to snap open at a predetermined temperature. Reset is preceeded by significant cooling.

A10, A20, A30, A40

Applications

Household appliances, Electronics, Fan Heaters, Automotive Industry

Benefits

More safety by self hold types, PCB terminals available, Customized ratings, Up to 100,000 cycles

Technical Data (standard types)

ratings A10V
A11V
A20V
A21V
A30V
A31V
A40V
A41V
function automatic manual self hold
230 V
self hold
120 V
version normally closed
VDE rated current at 50 / 60 Hz ( power factor 0.95 / 0.6 ) 16 A / 2.5A
(250 V)
19.2 A / 2.5A
(250 V)
16 A / 2.5A
(230 V)
19.2 A / 2.5A
(120 V)
switching cycles 10,000 1,000 10,000 8,000
temperature range Ta (steps in 5 K) 70°C … 160°C 70°C … 130°C / 140°C 70°C … 160°C
UL rated current at 50 / 60 Hz ( power factor 1.0 / 0.75 ) 16 A / 6.3A (250 V) 16 A / – (125 V)
switching cycles 6,000
temperature range Ta (steps in 5 K) 70°C … 160°C
max. current at 250 V 50/60Hz( power factor 0.95 ) 25 A
switching cycles under max. current 200
tolerance standard: +/- 5 K
feature of automatic action 1.B, 2.B 2.B 2.C
contact resistance <50 mΩ
hysteresis / reset temperature 1) 30 K +/- 15 K / – – / < -20°C; < -10°C -/ < -20°C 2)
suitable for use in protection category I, II
approvals VDE / ENEC EN 60730-1 / -2-9
UL UL 873
CSA C22.2 No. 24 3)
CQC GB14536.1-1998 / GB14536.10-1996 4)
1) at the Ta (upper and lower) limits the hysteresis could deviate
2) without air Åow
3) different power rating
4) details on request

Terminals

code used in TCO illust. drawing
dimensions (mm)
technical
specification
approvals
standard A10, A11, A12, A13
A20, A21, A22, A23
A30, A31, A32, A33
A40, A41, A42, A43
    terminals for soldering,
screwing, riveting or
welding
CuNi18Zn20 1)
VDE,UL, CSA
A321 A10, A12
A20, A22
A30, A32
A40, A42
SMD terminals
CuNi18Zn20 1)
VDE, UL
A322 A10, A12
A20, A22
A30, A32
A40, A42
THT terminals
CuNi18Zn20 1)
VDE, UL

1) P types have terminals of CuFe2P material

Standard Types

TCO illust. drawing
dimensions (mm)
technical
specification
approvals
standard current-time
based 1)
A10V A12V base of thermosetting plastic VDE,UL, CSA
A11V
A21V
A31V
A41V
A13V
A23V
A33V
A43V
screw-on fixing
base of thermosetting plastic
VDE, UL, CSA
A20V A22V manual reset
base of thermosetting plastic
possible srew-on fixing
dimensions see above
VDE, UL, CSA
A30V
A40V
A32V
A42V
voltage maintained PTC
120V or 230V
base of thermosetting plastic
possible screw-on fixing
dimensions see above
VDE, UL, CSA

1) For current-time based types (execution D, J, K, L, M, P, R, V) the following information must be provided:

• DC or AC voltage UN in Volts.

• Continuous operating current Ic in Amps at which the switch must not respond.

• Current level I0 in Amps at which the switch must respond.

• Response time t0 (in seconds ± tolerance) within which the switch must respond after reaching I0.

• Ambient temperatures which could be experienced both in normal operation and in switching conditions.

• Maximum current in Amps.

——

For special applications version P is available with a very low self heating rate.

Version A10H is VDE approved with 100,000 cycles at 1 Amp and 30,000 cycles at 10 Amps also.

Manual reset: The maximum operating force must not exceed 6 N. The control should not be reset before the starting conditions are reached, meaning there should be a satisfactory cooling down time!

Technical data on request

Characteristics of current vs. self heating and current vs. time

Ordering & Marking Example

MIC Ordering Example   [  A10V12005A321 ]
A10 V 120 05 A321
type execution temperature tolerance terminal code
Marking
A10V type and execution
E country (E=Spain)
12005 response temperature (120°C), tolerance (± 5K)
049 date of manufacture (April 2009)
A12D type and execution
H country (H=China)
–123 customised type with drawing number
049 date of manufacture (April 2009)