VSA100A is a safety vacuum switch for rough vacuum systems. At 6 mbar below atmosphere its diaphragm changes over the contact, so it can cut gas supply during venting and suits load-lock control.
| Switching Pressure | 6 ± 2 mbar (below atmosphere) |
| Back Switching Pressure | 3 ± 2 mbar (below atmosphere) |
| Working Pressure (absolute) | <2 bar |
| Operating Temperature (in operation) | 0 … +85 °C |
| Switching Contact | Change over contact, 24 V (dc) / 24 V (ac) |
| Flange Connection | DN 16 ISO-KF |
| Materials Exposed to Vacuum | Stainless steel 1.4305, EPDM, PTFE |
| Protection Rating | IP 44 |
| Weight | 315 g |
| Contact Current | max. 30 mA (24 V dc), 100 mA (24 V ac), min. load 1 mA (gold-plated contacts) |
| Helium Permeation | 5×10⁻⁵ mbar l/s (EPDM diaphragm, not suitable for high-helium processes) |
| Mounting Orientation | Vertical (upright) |
| Internal Volume | 2 cm³ |
| Storage Temperature | -20 … +85 °C |
| Dimensions | height 72 mm, outer diameter ø48.5 mm |