Why choose the SOBA S?
Most float switches need room to tilt. In small tanks, compact collection reservoirs or restricted-access installations, that room simply does not exist. The SOBA S solves this with a different principle: pure vertical activation, with a differential angle of just ±5°.
It switches at 10 to 15 cm of immersion. Immediate response. And thanks to its biconical geometry, deposits slide off without accumulating — equally reliable in clean water, wastewater or liquids with suspended solids.
A small component with a critical job: the system starts when it should, stops when it should, and triggers no false alarms in between.
Technical specifications
| Parameter | Value |
|---|---|
| Switching angle | ±5° (vertical activation) |
| Minimum detection immersion | 10–15 cm |
| Permitted fluid density | 0.70–1.50 g/cm³ |
| Maximum working pressure | 3.5 bar |
| Maximum temperature | 85 °C |
| Protection rating | IP68 (submersible) |
| Electrical characteristics | 12, 24, 48 VAC/VDC – 250 VAC/VDC 50/60 Hz |
| Cut-off power | 16 A resistive / 6 A inductive |
| Dimensions | 170 mm (height) × 80 mm (diameter) |
| Weight without cable | 330 g |
| Cable lengths | 5, 6, 10, 13, 15, 20, 25 and 30 m |
| Body material | Copolymer polypropylene |
| Cable material | Neoprene (standard) / HR HY (high resistance) |
Typical applications
- Level control in small tanks or limited-immersion installations
- Wastewater pumps, sewer networks, septic tanks
- Overflow alarms and dry-run protection
- Liquids with impurities, suspended solids or settled deposits
- Greywater reuse systems with compact collection tanks
Advantages
✅ Detects where other floats fail — minimal space, no compromise on reliability
✅ Zero maintenance in continuous service, even in loaded fluids
✅ Robust and waterproof: IP68, suited to wet and demanding environments
✅ Wide electrical compatibility: 12 V to 250 V, AC or DC
✅ Custom cable length to match the actual depth of your installation
