ENMG / LEVEL SWITCHES
ELST
Stainless-steel magnetic float switches
Reed-switch level sensors with a magnetic float for single- or dual-point liquid-level indication, available in vertical and side mounting forms.
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Specifications & selection.
- 304 stainless-steel standard construction.
- A1 and A2 reed-switch electrical grades.
- M10 × 16 mounting thread and 400 mm standard leads.
| Model stem | Length mm | Float arrangement | Approx. mass without cable |
|---|---|---|---|
| ELST-SV00451 | 45 | Vertical, single | 35 g |
| ELST-SV01001 | 100 | Vertical, single | 42 g |
| ELST-SV01501 | 150 | Vertical, single | 48 g |
| ELST-SV03001 | 300 | Vertical, single | 65 g |
| ELST-SV05001 | 500 | Vertical, single | 95 g |
| ELST-SV10001 | 1000 | Vertical, single | 160 g |
| ELST-SV01502 | 150; float centers 83 | Vertical, dual | 70 g |
| ELST-SV03002 | 300; float centers 228 | Vertical, dual | 105 g |
| ELST-SL00751 | 75; side arm 50 | Side, single | 38 g |
| ELST-SL01251 | 125; side arm 55 | Side, single | 48 g |
| Parameter | A1 | A2 |
|---|---|---|
| Maximum switched power | 10 W | 20 W for stated 100–265 VAC load; 10 W otherwise |
| Maximum switched voltage | 200 VDC / 140 VAC | 200 VDC / 265 VAC |
| Maximum switched current | 0.5 A DC / 0.35 A AC | 0.4 A DC / 0.3 A AC |
| Reed pull-in sensitivity | 10–30 AT | 17–23 AT |
| Operate including bounce | ≤0.55 ms | ≤0.6 ms |
| Release | ≤0.20 ms | ≤0.20 ms |
| Parameter | Value |
|---|---|
| Float | Ø28 × 28 mm |
| Liquid density | ≥0.76 g/cm³ |
| Temperature stated for assembly | −25 to +100 °C; confirm A2 lower limit because its reed component is listed at −20 °C |
| Material choices | S:stainless steel, standard304; S6:316; T:titanium by order |
| Pressure | Atmospheric-pressure service; no pressurized-vessel rating established |
| Contact resistance / insulation | ≤100 mΩ / ≥10¹⁰ Ω |
| Output leads | 2 or 4 conductors; standard400 mm; cable material by order |
| Protection claim | IP65 reference only; confirm exact enclosure/cable entry and shipment documentation |
Selection & installation notes
- Use as a control signal through a suitable interface. Do not connect a pump or other power load directly. A relay coil also requires voltage/current/power and inrush verification plus suitable suppression.
- Maximum voltage, current and power must all be respected; the maximum current is not available at every maximum voltage. A1 is recommended for 24 VDC control, A2 for 110/220 VAC control in the source.
- Reversing a float can change switching logic, but dual floats do not by themselves provide pump latching/hysteresis. Verify each contact and the external control circuit.
- Keep floats free of obstructions, deposits and strong magnets. Confirm material, seal and float buoyancy for the actual liquid.
- Do not submerge cable joints or exceed the approved immersion limit. An IP65 reference is not a continuous cable-immersion or pressure rating.
Based on the official Chinese product page and selection charts ↗. Checked 2026-09-15. Confirm the current specification for the exact model when ordering.
TECHNICAL RESOURCES
Plan your integration.
ENMG control components — English product-family brochure.
This is a product-family brochure. Request a model-specific datasheet and installation drawing with your inquiry.