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FSU Flow Detection Switches

Cynergy3 / Sensata FSU Flow Detection Switches offer a 25V maximum switching power rating, 0.6A switching current, and 240V_AC switching voltage. These switches feature a design that is based around a moving magnet and a fixed reed switch with a low flow restriction. FSU switches have industry-standard process connection sizes (push-fit or NPT thread) that provide a quick and reliable method of installation. Cynergy3 / Sensata FSU Flow Detection Switches are ideal for industrial washers and garment cleaners.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SEK) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	Type	Range	Operating Supply Voltage	Port Size	Housing Material
	Flow Sensors FLOW SENSOR FSU12LF Cynergy3 1: 358,54 kr 54In Stock	Mfr. Part No. FSU12LF Mouser Part No 285-FSU12LF	Cynergy3	Flow Sensors FLOW SENSOR Learn More about Cynergy3 fsu flow detection switches	Datasheet	54In Stock	358,54 kr 341,21 kr 325,91 kr 316,46 kr	Min.: 1 Mult.: 1			Flow Detection Switches	0.9 L/min	240 VAC, 120 VDC	12 in NPT	Polyoxymethylene (POM)
	Flow Sensors Fluid flow switch 3/4" tube connection standard flow FSU75A Cynergy3 1: 346,95 kr 2In Stock	Mfr. Part No. FSU75A Mouser Part No 285-FSU75A	Cynergy3	Flow Sensors Fluid flow switch 3/4" tube connection standard flow Learn More about Cynergy3 fsu flow detection switches	Datasheet	2In Stock	346,95 kr 330,30 kr 315,45 kr 306,00 kr	Min.: 1 Mult.: 1			Flow Detection Switches	3.75 L/min	240 VAC, 120 VDC	3/4 in Tube	Polyoxymethylene (POM)
	Flow Sensors FLOW SENSOR FSU75LF Cynergy3 1: 370,69 kr 3In Stock	Mfr. Part No. FSU75LF Mouser Part No 285-FSU75LF	Cynergy3	Flow Sensors FLOW SENSOR Learn More about Cynergy3 fsu flow detection switches	Datasheet	3In Stock	370,69 kr 352,80 kr 336,71 kr 326,81 kr	Min.: 1 Mult.: 1			Flow Detection Switches	1.75 L/min	240 VAC, 120 VDC	3/4 in Tube	Polyoxymethylene (POM)
	Flow Sensors FSU12A FSU12A Cynergy3 1: 335,14 kr 22In Stock 65On Order	Mfr. Part No. FSU12A Mouser Part No 285-FSU12A	Cynergy3	Flow Sensors FSU12A Learn More about Cynergy3 fsu flow detection switches	Datasheet	22In Stock 65On Order On Order Ship Dates Mfr. No: FSU12A Stock: 22 Can Dispatch Immediately On Order: 25 Pending 40 Expected 2026-11-23 Factory Lead Time: 13 Weeks	335,14 kr 319,16 kr 304,88 kr 295,65 kr	Min.: 1 Mult.: 1			Flow Detection Switches	2 L/min	240 VAC, 120 VDC	12 in NPT	Polyoxymethylene (POM)
	Flow Sensors FLOW SENSOR FSU34A Cynergy3 1: 346,95 kr 4Expected 2027-02-26	Mfr. Part No. FSU34A Mouser Part No 285-FSU34A	Cynergy3	Flow Sensors FLOW SENSOR Learn More about Cynergy3 fsu flow detection switches	Datasheet	4Expected 2027-02-26	346,95 kr 330,30 kr 315,45 kr 306,00 kr	Min.: 1 Mult.: 1			Flow Detection Switches	3.75 L/min	240 VAC, 120 VDC	3/4 in NPT	Polyoxymethylene (POM)
	Flow Sensors FLOW SENSOR FSU34LF Cynergy3 1: 370,69 kr 10Expected 2026-12-10	Mfr. Part No. FSU34LF Mouser Part No 285-FSU34LF	Cynergy3	Flow Sensors FLOW SENSOR Learn More about Cynergy3 fsu flow detection switches	Datasheet	10Expected 2026-12-10	370,69 kr 352,80 kr 336,71 kr 326,81 kr	Min.: 1 Mult.: 1			Flow Detection Switches	1.75 L/min	240 VAC, 120 VDC	3/4 in NPT	Polyoxymethylene (POM)
	Flow Sensors Fluid flow switch 1/2" tube connection standard flow FSU50A Cynergy3 1: 335,14 kr Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. FSU50A Mouser Part No 285-FSU50A	Cynergy3	Flow Sensors Fluid flow switch 1/2" tube connection standard flow Learn More about Cynergy3 fsu flow detection switches	Datasheet	Non-Stocked Lead-Time 10 Weeks	335,14 kr 319,16 kr 304,88 kr 295,65 kr	Min.: 1 Mult.: 1			Flow Detection Switches	2 L/min	240 VAC, 120 VDC	1/2 in Tube	Polyoxymethylene (POM)
	Flow Sensors FLOW SENSOR FSU50LF Cynergy3 1: 358,54 kr Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. FSU50LF Mouser Part No 285-FSU50LF	Cynergy3	Flow Sensors FLOW SENSOR Learn More about Cynergy3 fsu flow detection switches	Datasheet	Non-Stocked Lead-Time 10 Weeks	358,54 kr 341,21 kr 325,91 kr 316,46 kr	Min.: 1 Mult.: 1			Flow Detection Switches	0.9 L/min	240 VAC, 120 VDC	1/2 in Tube	Polyoxymethylene (POM)