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Instruction Manual (English)Instruction Manual (Multilingual)Series L4 Catalog Page L4 More Info

L4SSTOP | Float switch | SS | SPDT | (V=4 | H=3) | Dwyer

Float switch, SS, SPDT, (V=4, H=3)

Brand: DwyerSKU: L4SSTOP

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Overview Details for L4SSTOP

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Float switch | SS | SPDT | (V=4 | H=3)

SERIES L4 FLOTECT® FLOAT SWITCH

Magnetically Operated Switch, Leak Proof Body, Explosion-Proof

Rugged and reliable the Series L4 Flotect® Float Switch operates automatically to indicate tank level. Perfect for starting or stopping pumps, opening or closing valves, or actuating level alarm signals. A unique magnetically actuated switching design gives superior performance. There are no bellows, springs, or seals to fail. Instead, the free-swinging float attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm. Float arm hinge design limits the arm angle to prevent vertical hang up.

California Residents: Click Here for Proposition 65 WARNING.

Product Applications

Direct pump control for maintaining level
Automatic tank dump operations
Control levels or provide alarms in sumps, scrubber systems, hydro-pneumatic tanks, low pressure boilers, and various water/wastewater treatment processes
Level control
Valve control

Superior performance due to unique magnetically-actuated switching design
Long product life with no bellows, springs, or seals to fail
Avoids clogs using a free-swinging float that attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm
Prevents vertical hang up with float arm hinge design that limits the arm angle

Specifications

Series: L4 FLOTECT® FLOAT SWITCH
Category/Type: Level
Type: Level Switches
Series: L4 FLOTECT® FLOAT SWITCH
Service: Liquids compatible with wetted materials.
Wetted Materials: Float and Rod: 316 SS; Body: Brass or 316 SS standard; Magnet Keeper: 430 SS standard; 316 SS or nickel optional.
Temperature Limits: 4 to 275°F (-20 to 135°C) standard; MT high temperature option 400°F (205°C) [MT option not UL; CSA; ATEX or IECEx]. ATEX and IECExoptions: Ambient temperature -4 to 163°F (-20 to 73°C); Process temperature -4 to 163°F (-20 to 73°C).
Pressure Limit: Brass body 1000 psig (69 bar); 316 SS body 2000 psig (138 bar). Standard float rated 100 psig (6.9 bar). For other floats; see options.
Enclosure Rating: Weatherproof and Explosion-proof. **Listed with UL and CSAfor Class I; Groups C and D; Class II; Groups E; F; and G.ATEX CE 2813 II 2 G Ex db IIB T6 Gb -20°C≤Tamb≤73°C.-20°C≤Process Temp≤73°C.EU-Type Certificate No.: KEMA 03 ATEX 2383.ATEX Standards: EN 60079-0:2012+A11:2013.IECEx Certified: For Ex db IIB T6 Gb -20°C≤Tamb≤73°C. -20°C≤ProcessTemp≤73°C.IECEx Certificate of Conformity: IECEx DEK 11.0071.IECEx Standards: IEC 60079-0:2011; IEC 60079-1:2014.
Switch Type: SPDT snap switch standard; DPDT snap switch optional.
Electrical Rating: UL; FM; ATEX and IECEx models: 10 A @ 125/250 VAC (V~). CSA models: 5 A @ 125/250 VAC (V~); 5 A res.; 3 A ind. @ 30 VDC. MV option: 1 A @ 125 VAC (V~); 1 A res.; .5 A ind. @ 30 VDC. MT option: 5 A @ 125/250 VAC (V~). [MT and MV option not UL; CSA; FM; ATEX or IECEx]
Electrical Connection: UL and CSA models: 16 AWG; 6" (152 mm) long. ATEX and IECEx units: terminal block.
Conduit Connection: 3/4" (19.05 mm) female NPT standard or M25 with -BSPT option.
Process Connection: 1-1/2" (38.10 mm) male NPT or 1-1/2" (38.10 mm) male BSPT standard; 2-1/2" (63.50 mm) male NPT or 2-1/2" (63.50 mm) male BSPT standard optional floats.
Mounting Orientation: Horizontal installation standard; optional vertical top mount.
Deadband: 3/4" (19 mm) for standard float.
Specific Gravity: 0.7 minimum with standard float. For other floats see Options/Accessories page.
Weight: 4 lb 9 oz (2.07 kg).
Agency Approvals: ATEX; CE; CSA; FM; IECEx; UL**.
: **No Housing Option (-NH) has no approvals.