Door contact switches are one of the types of limit switches, devices for closing and opening electrical circuits in automatic control systems for electric drives. At certain points of a given trajectory of movement, the movable element causes the closing or opening of the corresponding contacts of the limit switch. This provokes the appearance of electrical signals and activates the control devices of the automated electric drive.

1. 190 (W201)
2. 190 Saloon (W201)
3. /8 (W114)
4. /8 Saloon (W114)
5. /8 Coupe (W114)
6. /8 (W115)
7. /8 Saloon (W115)
8. 123 Saloon (W123)
9. 123 T-Model (S123)
10. 123 Break (S123)
11. 124 Saloon (W124)
12. E-CLASS (W124)
13. E-CLASS Saloon (W124)
14. 124 T-Model (S124)
15. 124 Break (S124)
16. E-CLASS T-Model (S124)
17. E-CLASS Break (S124)
18. S-CLASS (W116)
19. S-CLASS Saloon (W116)
20. S-CLASS (W126)
21. See more in applications

The operation of a door contact switch

The HELLA brand Switch, door contact is designed to record the facts of opening / closing doors in cars and vehicle trailers. With the help of the sensor, full control of loading operations into the vehicle is provided and accurate reports are provided on the place, time and duration of the opening / closing of the car and trailer doors.

The switch is installed at the door inside the trailer, integrates with the monitoring system and transmits data to the software used. The door contact switch must have a number of characteristics: reliability of operation, safety of use for people and mechanisms, strength and high mechanical and electrical wear resistance.