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Magnetic Float Level Switches

KOBOLD's Magnetic Float Level Switches provide accurate and reliable detection for most simple level applications. They employ a hermetically sealed reed contact actuated by a magnet in the float. As the float rises and falls, the magnetic field causes the switch inside the stem to open or close. They are available in a wide range of materials for compatibility with a wide variety of media, including materials resistant to aggressive media. They are ideal for applications where simplicity and durability is desired.

Our magnetic float level switches are easy to install and maintain, offering long-term reliability and consistent performance. Below, you will find a comprehensive list of our float magnetic level switch products, each engineered to meet the highest standards of quality and reliability.

M Series
Magnetic Float Level Switches

SS, Brass, PVC, PP, NBP, or PVDF | up to 1,450 PSIG | up to 300 °F | "1...2" NPT or ANSI Flange | Wide Range of Electrical Terminal Boxes

Starting at $55
Wetted Materials
Stainless Steel, Brass, PVC, PP, NBR, PVDF
Fittings
G ⅛, G ⅜, G ½ ,G 1, G 1½ G 2, 1" NPT, 1½" NPT, 2" NPT, PG 7 Male, DIN & ANSI Flanges
Connection Box
Aluminum, Polyamide, Polypropylene, ABS
Max. Pressure
1450 PSIG
Max. Temperature
302 °F (150 °C)
    Simple Installation
    Long Electrical Service Life
    High Degree of Operational Reliability
    Wide Range of Connections and Electrical Terminal Boxes
NAB
Polypropylene Float Level Switch

Heavy-Duty Industrial Design | up to 185°F | up to 50 PSIG | Neoprene Jacketed Cable | SPDT Switch | High Current Capacity

Starting at $110
Fast Delivery
Wetted Parts
Polypropylene (PP), Neoprene®
Max. Temperature
185 °F (85 °C)
Max. Pressure
50 PSIG (3.5 BAR)
Max. Switch Rating
250 VAC 50/60 Hz, 20A Resistive/8A Inductive Load
    Low Cost, High Value Tilt Switch
    Heavy-Duty Industrial Design
    Polypropylene Float, Neoprene® Jacketed Cable
    SPDT Mechanical Switch
    High Current Capability
    Quick Delivery
NCB
Magnetic Float Switches

NBR Float | up to 230 °F | 150 PSIG | SG > 0.55 SG | Highly Repeatable | Resistant to Shock and Vibration | Field Selectable N/O or N/C

Starting at $60
Fittings
1/8" NPT, 1/4" NPT, PF 1/8" (3/8"...24 UNF)
Wetted Materials
NBR, Brass, 316 St. Steel
Max. Pressure
150 PSIG
Max. Temperature
230°F (110 °C) (in Oil), 180°F (80 °C) (in Water)
Specific Gravity
> 0.55 S.G.
    Compact Size
    Excellent Repeatability
    Reliable Performance, Long-Life Expectancy
    Highly Resistant to Shock and Vibration
    Field Selectable - Normally Open (N/O) or Normally Closed (N/C)
NCG
Large Multipoint Magnetic Float Level Switch

up to 96" | up to 400 PSIG | up to 300 °F | 1/2"...2" NPT, 3" ANSI, 1/2" Tube End | Stem - 316 SS or PVC | Floats - NBR, SS, or PP

Starting at $179
Fast Delivery
Maximum Length
96"
Fittings
1/2"...2" NPT, 3" ANSI Flange, 1/2" Tube End
Stem/Fittings
316 SS or PVC
Floats
NBR, SS or PP
Electrical Ratings
100 VA SPST (Standard), 20 VA SPDT (Optional)
    Available Wetted Materials - Stainless Steel, NBR, Polypropylene and PVC
    Maximum Pressure of 400 PSIG
    Maximum Temperature of 300 °F (150 °C)
    Single Point and Multipoint Custom Designs
    Quick Delivery
NCM
Mini Multipoint Float Level Switch

up to 48" | 1/8"...1" NPT or 5/16" Tube End | Stem - 316 SS or Brass | Floats - 316 SS, NBR, PP | up to 4 Control Points

Starting at $199
Fast Delivery
Maximum Length
48"
Fittings
1/8"...1" NPT, 5/16" Tube End
Stem/Fittings
316 SS or Brass
Floats
316 SS, NBR or Polypropylene
Electrical Ratings
SPST 100 VA Standard
    Compact Design for Small Tanks
    Brass, Stainless Steel, NBR and Polypropylene Materials
    Single Point and Multipoint Designs
    Up to 4 Control Points per Unit
    Quick Delivery
NCP
Magnetic Float Switches

For Liquids | up to 100 PSIG | up to 225 °F | 1/8" NPT or PF 1/4 | Min SG of 0.81 | Excellent Chemical Resistance

Starting at $29
Max. Pressure
100 PSIG
Max. Temperature
225 °F (107 °C)
Fittings
1/8" NPT or PF ¼
Minimum SG
0.81
    Compact Size
    Highly Reliable
    Seamless Cellular Construction
    Excellent Chemical Resistance
NCS
Magnetic Float Switches

Reed Switch | 1/8" or 1/4" NPT | up to 400 PSIG | up to 300 °F | Min Liquid Density 0.65 SG | All SS Construction

Starting at $72
Contact
Reed Switch
Fittings
1/8", 1/4" NPT
Wetted Material
SS
Max. Pressure
400 PSIG
Max. Temperature
300 °F (150 °C)
Liquid Density
> 0.65 SG
    Small, Compact Size with Small Displacement
    Highly Reliable, Yet Inexpensive
    All Stainless Steel Construction
    Excellent Chemical Resistance
NEC
Heavy Duty Float Level Switch

Unique Isolated-Chamber Design | SPDT Switch | PP or Hypalon Floats with PEC Clad Cables | up to 194 °F | up to 58 PSIG

Starting at $206
Fast Delivery
Wetted Parts
PP Float w/PEC-Clad Cable or Hypalon®-clad PP Float w/PEC-Clad Cable
Max. Temperature
185 °F (85 °C) (NEC), 194 °F (90 °C) (NEC-HY)
Max. Pressure
50 PSIG (NEC), 58 PSIG (NEC-HY)
Switch
SPDT Mechanical (Mercury-Free)
Max. Switch Ratings
250 VAC 50/60 Hz, 16A Resistive Load/6A Inductive
    Polypropylene or Hypalon®-Coated Floats w/PEC Clad Cables
    Simple, Rugged and Reliable
    Unique, Isolated-Chamber Float Design
    SPDT Mechanical Switch (Mercury-Free)
    Adjustable Ballast Weight Included
    Quick Delivery
NGS
Heavy Duty Side Mount Level Switch

High Capacity | SPDT Switch | 316 SS | up to 360 PSIG | up to 480 °F | Square Flange or 2" NPT | Ideal for Max/Min Monitoring

Starting at $586
Fast Delivery
Contact
1 SPDT Mechanical Switch
Fittings
Square Flange, 2" NPT
Material
316 SS
Max. Pressure
360 PSIG
Max.Temperature
480 °F (250 °C)
Liquid Density
>0.7 g/ml
    High Capacity 10 Amp Mechanical Switch
    All Wetted Parts of 316 SS
    All-Metal Design for Harsh Environments
    Ideal for Min/Max Level Monitoring
    Quick Delivery
NKP
Plastic Side Mount Level Switch

Made in the USA | Chemically Resistant PP or PVDF | up to 145 PSI | N/O or N/C Selectable | up to 212 °F | Min SG 0.6 or 0.95

Starting at $48
Fast Delivery
Fittings
½" NPT or Bulkhead
Body/Float Material
Polypropylene or PVDF
Max. Pressure
145 PSI
Max. Media Temperature
175 °F (80 °C) (PP), 212 °F (100 °C) (PVDF)
Minimum S.G.
0.6 (PP), 0.95 (PVDF)
Contact
Hermetically-Sealed Reed Switch
Electrical Connection
2-Wire Jacketed Cable, 36" Length
    Excellent Chemical Resistance
    Small Size-Easy Installation
    Ideal for Tanks with Inaccessible Tops or Bottoms
    N/O or N/C User Selectable
    Cost Effective
    Made in the USA
    Quick Delivery
NSE
Stainless Steel Float Level Switch

Cylindrical or Ball Float Design | 316 SS | up to 220 PSIG | up to 300 °F | SPDT Reed Switch | 0.8 SG Min

Starting at $1,450
Max. Temperature
302 °F (150 °C)
Max. Pressure
87 / 220 PSIG (Model Dependent)
Materials
316 Stainless Steel
Switch
SPDT Reed Switch
Media Density
0.8 S.G. Min.
Cable
6 Ft. (2 m) Silicone-clad Cable
    For All Types of Compatible Liquids
    SPDT Reed Switch (Mercury-Free)
    316 Stainless Steel Wetted Construction
    302 °F Maximum Temperature
    220 PSIG Maximum Pressure
    Cylindrical or Ball Float Design
NSM
Polypropylene Float Level Switch

SPDT Switch | up to 45 PSIG | up to 185 °F | 0.6 SG Min | Neoprene Cable

Starting at $267
Max. Temperature
185 °F (85 °C)
Max. Pressure
45 PSIG
Materials
Polypropylene Float/Neoprene Cable
Switch
SPDT Mechanical Switch
Media Density
0.6 S.G. Minimum
    For All Types of Liquids
    Mechanical Switch (Mercury-Free)
    Polypropylene Float Construction
    Maximum Temperature to 140 °F
    Maximum Pressure to 45 PSIG
NSP
Polypropylene Float Level Switch

SPDT Switch | up to 30 PSIG | up to 185 °F | 0.6 or 0.9 SG Min

Starting at $315
Fast Delivery
Max. Temperature
140 °F (60 °C) (185 °F with Optional Silicone or FEP-clad Cable)
Max. Pressure
15 PSIG (NSP-5101), 30 PSIG (NSP-5201)
Wetted Materials
Polypropylene Float/TPK Cable Standard
Switch
SPDT Mechanical Switch
Float Density
0.6 S.G Min. (NSP-5201), 0.9 S.G. Min. (NSP-5101)
    Wide Compatibility with Many Liquids
    SPDT Mechanical Switch (Mercury-Free)
    Rugged Polypropylene Float Construction
    Maximum Temperatures to 185 °F
    Maximum Pressures to 30 PSIG
    Quick Delivery
NST - PTFE
PTFE Float Level Switch

SPDT Switch | up to 15 PSIG | up to 300 °F | 0.79 SG Min

Starting at $1,152
Max. Temperature
302 °F (150 °C)
Max. Pressure
15 PSIG
Wetted Materials
PTFE Float / FEP-Clad Cable
Switch
SPDT Reed Switch
Switch Rating
4 to 250 VAC/ VDC, 60 VA, 1 mA to 1 A Max.
Media Density
0.79 S.G. Min.
    For All Types of Chemically Aggressive Liquids
    SPDT Reed Switch (Mercury-Free)
    All PTFE/FEP Construction
    Suitable for High Temperatures
NV
Side Mount Level Switch

Made in the USA | up to 232 PSIG | up to 230 °F | > 0.7 SG | 3/4" NPT | SPST Reed Contact | cCSAus Approved

Starting at $230
Fast Delivery
Contact
1 SPST Reed Contact, cCSAus Approved
Fitting
3/4" NPT
Wetted Material
Ni-plated Brass, SS
Max. Pressure
232 PSIG
Max. Temperature
230 °F (110 °C)
Liquid Density
> 0.7 SG
    Rugged, All Metal Compact Design
    N/O or N/C, User Selectable
    Hermetically Sealed Reed Switch
    Ideal for Tanks with Inaccessible Tops or Bottoms
    Made in the USA
    Quick Delivery
RFS
Side Mount Level Switch

User-Selectable N/O or N/C Reed Switch | 1/2" NPT | 304 or 316L SS | up to 145 PSI | up to 248 °F

Starting at $258
Fast Delivery
Fitting
1/2" NPT, G 1/2
Contact
N/O or N/C Reed Switch
Electrical Connection
DIN Plug, M12 Plug, or Aluminum Housing, Aluminum Housing (ATEX)
Wetted Material
304 or 316L Stainless Steel
Max. Pressure
145 PSI
Media Temperature Range
-14...248 °F (120 °C)
Minimum S.G.
> 0.8 S.G.
    Small Size, Easy Installation
    User Selectable N/O or N/C
    Hermetically-Sealed Reed Switch
    Cost Effective
    Ideal for Tanks with Inaccessible Tops or Bottoms
    Quick Delivery

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