Safety Limit Switch
• Conforms to EN (TUV) standards corresponding to the CE marking
• Positive opening operation of NC (Normally Closed) contacts conforming to IEC /EN 60947-5-1
• Wide standard operating temperature range: -25°C to 70°C
• Full range of actuator heads and levers suitable for safety applications
• Sealing up to IP 67
• International conduit size
The EFM series have been tested and approved to meet the requirements of the Low Voltage directive and positive opening safety contacts per IEC/EN 60947-5-1-3.
Typical applications for these switches would use the roller plunger in conjunction with cams on doors with hinges .
A rang of panel mounting or top mounting versions are also available to ensure that the switch can be simply installed in small space or difficult mounting.
> Product Selection
| Actuator Type EFM-□-3-31 Dome Plunger | EFM-□-3-51 Panel Mount Dome Plunger |
| Actuator Type EFM-□-3-32 Roller Plunger | EFM-□-3-321 Cross Roller Plunge |
| Actuator Type EFM-□-3-52 Panel Mount Roller Plunger | EFM-□-3-521 Panel Mount Cross Roller Plunger |
| Actuator Type EFM-□-3-20 Short Lever |
> Actuation Guidelines
The method of actuation and over travel has significant influence on the service life of the limit switch. To maximize the service life,it is recommended to provide an actuator with a 30° pressure angle and a surface hardness of Rc--45 max.
> Bottom Cable Style
Two,4.2(0.165)dia.
Holes countersink: 7.2(0.28)dia.
Depth: 4.2(0.165)
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