Excellence Comes in Small Packages
At less than 2.35 inches (60 mm) in total length, and an all stainless steel construction capable of operating temperatures up to 368° F, the series FS-410 float switch brings high performance to small spaces .
Small Package From the top of the mounting threads, to the bottom of the stem, the FS-410 is less than 2.35" long, and the float is just under 1.2" wide.
Temperature Ranges The FS-410-S has an operating temperature range of -40° to 368° F (-40° to 187° C).
Certifications FS-410-S switches carry CSA Explosion Proof certifications and are NSF 169 certified.
User Reversible Operation FS-410 float switches come standard with Normally Open operation. The e-clip at the bottom of the stem is easily removed to change to orientation of the float, changing the switch operation to Normally Closed.
- C I, D 1 Hazardous Locations
- Food / Beverage
- Water / Wastewater
Common Model Configurations
All common model configurations can be purchased online, click the model number link below. Refer to Model Number Configurator on the datasheet for a full list of configuration options.
|Model Number||Model Description|
|FS-410-S-M1-M1-0.7-P14-24||Stainless Steel Stem and Float, Standard Temperature, 0.7 SG, 1/8" NPTM, 24" Wires|
|FS-410-S-M1-M1-0.7.P14-36||Stainless Still Stem and Float, Standard Temperature, 0.7 SG, 1/8" NPTM, 36" Wires|
|FS-410-S-M1-M1-0.7-P14-48||Stainless Steel Stem and Float, Standard Temperature, 0.7 SG, 1/8" NPTM, 48" Wires|
Customer Reversible Specific Gravity
300 psi (20.7 bar)
Normally Open Actuation
0.130" ± 0.015"
3.30 mm ± 0.38 mm
Normally Closed Actuation
0.115" ± 0.015"
2.92 mm ± 0.38 mm
0.060" ± 0.010"
1.52 mm ± 0.25 mm
100 W (resistive load only)
Max Current (AC, 50/60 Hz)
0.416 A @ 240 VAC
0.833 A @ 120 VAC
1 A @ ≤ 100 VSC
Max Current (DC)
0.833 A @ 120 VDC
1 A @ ≤ 100 VDC
Class I, Div 1 & 2; Grps A,B,C,D, T3
Class II, Div 1; Grps E,F, T200°C
Class II, Div 2; Grps F,G, T200°C
Ta -40°C to 187°C
Mount & Stem Materials
2.32 in. - top of threads to bottom of stem
1.17 in. - float diameter
-40 to 368° F (-40 to 187° C)
New Vertical Float Switches from APG | FS-400 & FS-410