A10, A20, A30, A40

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.

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 T_a (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 T_a (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 / GB14536.10-1996⁴⁾
^{1) at the T_a (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 U_N in Volts. • Continuous operating current I_c 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)