Float level switch NESOS R04 LS
for liquidsfor tanksIEC-Ex

Float level switch - NESOS R04 LS - JUMO Group - for liquids / for tanks / IEC-Ex
Float level switch - NESOS R04 LS - JUMO Group - for liquids / for tanks / IEC-Ex
Float level switch - NESOS R04 LS - JUMO Group - for liquids / for tanks / IEC-Ex - image - 2
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Characteristics

Technology
float
Medium
for liquids
Applications
for tanks
Approvals
ATEX, IEC-Ex, CCC-Ex, WHG
Material
stainless steel
Other characteristics
maintenance-free, IP68, intrinsically safe, SPST, SPDT
Process temperature

Max.: 240 °C
(464 °F)

Min.: -52 °C
(-61.6 °F)

Process pressure

Max.: 37 bar
(536.64 psi)

Min.: -1 bar
(-14.5 psi)

Description

Product description
The JUMO NESOS R04 LS float switch in curved version is designed to switch alarms, pumps, signal lamps, valves and horns via a contact-protection relay. The device is suitable for liquid level detection in tanks and vessels and is available in an intrinsically safe [Ex i] version for connection to intrinsically safe circuits.

Highlights
  • Maintenance-free device design
  • Cost-effective installation and mounting
  • Flexible measurement options and float variants


Technical data (table)
General technical data
Switching capacity: Up to 230 V AC/DC; up to 1.5 A
Medium temperature: -52 to +240 °C
Contact versions: Normally closed; changeover; normally open; bistable contact
Float options: Cylinder, CrNi (stainless steel) Ø 27; sphere, CrNi (stainless steel) Ø 29; sphere, Ti (titanium) Ø 29
Protection rating: Up to IP68
Approvals: ATEX, IECEx, EACEx, CCC [Ex i, Ex d], WHG, EAC
Manufacturer's declaration: CE
Special features: Does not fall under Pressure Equipment Directive 2014/68/EU (no pressurized housing) – see separate TÜV SÜD certificate.

Technical features / specifications
  • Model: JUMO NESOS R04 LS
  • Switching capacity: Up to 230 V AC/DC; up to 1.5 A
  • Medium temperature range: -52 to +240 °C
  • Contact versions: Normally closed, changeover, normally open, bistable
  • Float materials / sizes: Cylinder CrNi Ø 27; sphere CrNi Ø 29; sphere Ti Ø 29
  • Protection rating: Up to IP68
  • Approvals: ATEX, IECEx, EACEx, CCC [Ex i, Ex d], WHG, EAC
  • Manufacturer's declaration: CE
  • Note: Not subject to Pressure Equipment Directive 2014/68/EU (no pressurized housing)

Catalogs

Productrange
Productrange
36 Pages

Exhibitions

Meet this supplier at the following exhibition(s):

InnoTrans 2026
InnoTrans 2026

22-25 Sep 2026 Berlin (Germany) Hall CityCube, A - Stand 240

  • More information
    Aquarama 2026
    Aquarama 2026

    29-29 Oct 2026 Leuven (Belgium)

  • More information
    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.