Design Tool
- 1: Switch Basics.
- 1.1: General.
- 1.2: Definitions of different switch types.
- 1.3: Operating Characteristics.
- 1.4: Approvals.
- 1.5: Electrical rating.
- 1.6: Switch Technology.
- 1.7: Contact.
- 1.8: Switch Actuation / Design.
- 1.9: Environmental Protection.
- 1.10: Recommendations.
- 2: Typical Applications.
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Clearance Distance
The distance in air between conductive parts or between conductive parts and a surface which can be contacted by persons when the switch is installed.
Creepage Distance
The path along the surface of insulating material between conductive parts or between conductive parts and a surface which can be contacted by persons when the switch is installed.
Insulation Resistance
The resistance for reinforced insulation shall be not less than 7 MOhms between all live parts connected together and a metal foil covering to a accessible surface.
Functions
On-off function switch, or momentary.
Change over
On-off function in two directions with or without zero position, or momentary Multiple function On – step- off function e.g I – II – 0 positions, or momentary.
Pole
Part of the switch which exclusively is assigned to an electrically separate conducting path of the switch. A single-pole switch has only one pole (two terminals) (except with signal indicator) A double-pole switch has two-poles (four terminals).
Number of cycles
According to EN 61058-1 normally cycles 10.000 (1E4), frequent operation 50.000 cycles (5E4) According to UL 1054 normally 6.000 cycles.