CK1 |
SK1 |
LK1 |
NK1 |
![]() |
![]() |
![]() |
![]() |
| Switching type | NC contact CK1 resetting | NC contact SK1 resetting | NC contact LK1 resetting | NC contact NK1 resetting |
| Insulated: Housing / insulating cap | Yes | Yes | no | no |
| Partially insulated: Plastic cap | no | no | no | yes |
| Temperature | ||||
| Reverse Switch Temperature (NST), [°C], in 5 K steps | 60 – 200 | |||
| Tolerance range -Standard- Tol [ [K] | ± 5 | |||
| Reverse Switch Temperature (RST below NST) UL [K] Switch-back temperature (RST below NST) VDE [°C] |
-35 ± 15 ≥ 35 |
|||
| Tension | ||||
| max. operating voltage range up to … | 500 V DC / 14 V DC | |||
| Rated voltage AC [VAC] | 250 ( VDE), 277 (UL) | |||
| Current/switching cycles | ||||
| Rated current AC – cos φ = 1.0 [A] / [n] | 2,5 / 10’000 | |||
| Rated current AC – cos φ = 0.6 [A] / [n] | 1,6 / 10’000 | |||
| max. Switching current – cos φ = 1.0 [A] / [n] | 6,3 / 3’000 7,5 / 300 | |||
| Rated current cos φ = 0.4 [A] / [n] | 1,8 / 10’000 | |||
| max. Switching current – cos φ = 0.4 [A] / [n] | 7,2 / 1’000 | |||
| Rated voltage DC [V] | 12 | |||
| Max. Switching current DC [A] / [n] | 40,0 / 10’000 | |||
| Additional specifications | ||||
| High-voltage strength [kV] | — | 2 | 2 | — |
| Total bounce time [ms] | < 1 | |||
| Contact resistance (according to MIL-STD R5757) [mΩ] | 50 | |||
| Vibration resistance 10 … 60 Hz [m/s2] | 100 | |||
| Compressive strength of the switch housing [N] | 450 | |||
| Suitable for installation in protection class | I | I + II | I + II | I |
| Impregnation resistance | suitable | |||
| Available Licenses and Approvals | ||||
| please specify | IEC, ENEC, VDE, UL, CSA, CQC | IEC, ENEC, VDE, UL, CQC | ||
| Dimensions (standard) | ||||
| Diameter Ø d [mm] | 10,0 | 10,0 | 10,0 | 10,0 |
| Overall height h [mm] | from 3.9 | from 4.3 | from 7.0 | 3,4 |
| Length of connection pin l [mm] | — | 15,0 | — | 14,0 / 20,0 |
| Thread (size x length ) [M x mm] | — | — | M4 x 5 | — |
| Width across flats / max. Torque [mm / Nm] | 10,0 / 2 | |||
| Standard stranded wire connection: | 0.25 mm2/AWG 22 | Connection wire d = 0.5 mm | ||
| Characteristics of current dependence | ||||
| The special feature of the 01 and 02 series is that they are temperature-sensitive switches. In their rated operation (rated current), they exhibit very low self-heating due to the current. Therefore, a switching point reduction takes place at most within the nominal switching temperature tolerance. | ||||
CK1 |
SK1 |
LK1 |
NK1 |
![]() |
![]() |
![]() |
![]() |
Note
The data and information provided are based on tests and test series. They are intended as a guide, which is why there may be deviations for individual applications and uses. The suitability in a specific application must be checked by the user in each individual case.








