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NS20 Cam Switch
The NS20 is a very robust rotary cam switch with 12 mm diameter metal square shaft, aluminum nameplate, and cam-actuated contacts. The switch contacts, embedded in double contact modular blocks, with positive break by the cam discs, are available in three different versions. A special gold-plated version is suited for low voltage applications. A silver contact editions is designed for standard applications. And, finally, an edition using a permanent magnetic blowout is for direct current set-ups.
The NS20 rotary cam switches handle control tasks in switch panels, control stations and on-deck control stations. The can be equipped with metal notched discs from the Spohn & Burkhardt modular program, with customised positive-locking flanged potentiometers or with encoders that fit the customer's specifications. Call one of the Elma product engineers for advice & the possibilities for customized cam switches.
| Max. protection class outside / inside | IP54 / IP00 |
|---|---|
| Installation | from below |
| Number of notches | 5 |
| Spring return | yes |
| Friction break | yes |
| Operating temperature | -40°C / +60°C |
| Switching cycles | min. 10 milion |
| Max. Voltage / Current | 230V / 16A |
| Max. number of contacts per direction of movement | 24 |
| Sensor types | Potentiometer, Encoder, Hall |
| Type of desired output signals |
4-20 mA or 0-20 mA |
| BUS systems | ProfiNet, ProfiBus, SAE J1939, CAN(open), ... |
| Analog output | resistance |
| CSA | yes |
| UL | yes |
| Rotating drive | yes |