The Crydom FFS Series Float Switches guide provides technical specifications, material compatibility, and installation notes for various RSF models.
This document presents the Crydom FFS Series of float switches, covering a range of internal and external mounting styles such as the compact RSF40 internal mount and the RSF70 external mount. Each model’s material options, temperature ranges, and electrical ratings are listed, along with guidance on selecting the right switch for a given tank configuration and liquid.
Installation instructions, wiring considerations, and contact protection recommendations are included, as well as chemical compatibility charts and WRAS approval information. The guide also lists UL‑approved cable types and optional accessories for each switch variant.
| Material (RSF40) | Acetal |
|---|---|
| VA Rating (RSF40) | 25 |
| Switching Voltage AC Max (RSF40) | 240 V |
| Temperature Range (RSF40) | -10 / +60 °C |
| Material (RSF70) | Nylon |
| VA Rating (RSF70) | 25 |
| Switching Voltage DC Max (RSF70) | 120 V |
All ratings are for resistive loads only.
Yes, many variants carry WRAS approval.
Both normally open (N/O) and normally closed (N/C) contact forms are offered.
The maximum AC switching voltage is 240 V.