
Technical Data
rating \ control type | K1AV | K1AT | |
function | automatic | ||
version | normally closed | normally open | |
rated current at 230 V 50 / 60 Hz ( cos φ 0,95 ) | 10 A | ||
rated current at 400 V 50 / 60 Hz ( cos φ 0,95 ) | 6 A | ||
switching cycles | 10,000 | ||
temperature range TA ( steps in 5 K ) | 200ºC – 450ºC | ||
tolerances | ±5% | ||
feature of automatic action | 1.B | ||
contact resistance | <50 mΩ | ||
hysteresis | 100K ± 20K | ||
degrees of protection provided by enclosures ( EN 60529 ) |
IP00 | ||
suitable for use in protection class | I | ||
approval | VDE | EN 60730-1 / -2-9 | |
* UL version available upon request for normally open |
Standard Types
type | nc | no | illustration | drawing dimensions (mm) |
technical description |
approval 1) 2) |
K1A | V | T | ![]() |
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cover micanite housing ceramic bottom plate steel |
VDE |
Terminals
type | illustration | drawing dimensions (mm) |
technical description |
approval 1) 2) |
A160 | ![]() |
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welding terminals, steel |
VDE |
A170 | ![]() |
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welding terminals, steel |
VDE |
A180 | ![]() |
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welding terminals, steel |
VDE |
A161 (0º) A162 (90º) |
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terminals 6.3 x 0.8, steel, also available: angle 90º Ta max 350°C |
VDE |
A171 (0º) A172 (90º) |
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terminals 6.3 x 0.8, steel, also available: angle 90º Ta max 350°C |
VDE |
A181 (0º) A182 (90º) |
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terminals 6.3 x 0.8, steel, also available: angle 90º Ta max 350°C |
VDE |
A163 (0º) A164 (90º) |
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screw terminals, steel, also available: angle 90º Ta max 350°C |
VDE |
A173 (0º) A174(90º) |
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screw terminals, steel, also available: angle 90º Ta max 350°C |
VDE |
A183 (0º) A184 (90º) |
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screw terminals, steel, also available: angle 90º Ta max 350°C |
VDE |
A168 | ![]() |
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lead L551, welded | VDE |
A178 | ![]() |
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lead L551, welded | VDE |
A188 | ![]() |
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lead L551, welded | VDE |
1) VDE approval is only valid for type K1AV 2) UL version available upon request for normally open
lead L551: UL style 5107, 600V, max. 450°C, insulation glass fibre-PTFE,
cross-section of conductor 1,3 mm2 (AWG16) , grey, stripped 10mm
Fixings
type | illustration | drawing dimensions (mm) |
technical description |
approval 1) 2) |
B410 | ![]() |
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bottom plate, steel |
VDE |
B412 | ![]() |
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bottom plate with flange, steel | |
B413 (M4x6)
B414 (M5x6) |
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bottom plate with stud, steell |
1) VDE approval is only valid for type K1AV 2) UL version available upon request for normally open
Ordering and Marking Example
Ordering example

Marking
K1AV 30015 type (normally closed)
response temp. (300ºC), tol. (+/- 15K)
XXXXXproduction number
K1AT –123type (normally open)
drawing number
XXXXX production number