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S28x Capacitance Coolant Level Switches

Amphenol Rochester Sensors S28x Capacitance Coolant Level Switches are active devices designed to give an alarm signal if liquid falls below or rises above a preset level. These can be specified with a delay to eliminate false alarms due to turbulence. Containing a factory-programmable microprocessor, the switches offer sink-to-ground, source-voltage, or both outputs on separate pins.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	Series
	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/2" NPTF, PU 1 LIQ, SI 10 FA, SI AIR, DE3 S287/03 Amphenol Rochester Sensors 1: 83,82 € 198In Stock New At Mouser	Mfr. Part No. S287/03 Mouser Part No 34-S287-03 New At Mouser	Amphenol Rochester Sensors	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/2" NPTF, PU 1 LIQ, SI 10 FA, SI AIR, DE3 Learn More about Amphenol Rochester Sensors amphenol s28x capacitance coolant level switches	Datasheet	198In Stock	83,82 € 77,79 € 75,54 € 72,85 € View 71,01 € 69,32 € Quote	Min.: 1 Mult.: 1		S286
	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/2" NPTF, PU 1 LIQ, SI 10 FA, SI AIR S285/05 Amphenol Rochester Sensors 1: 58,56 € 72In Stock New At Mouser	Mfr. Part No. S285/05 Mouser Part No 34-S285-05 New At Mouser	Amphenol Rochester Sensors	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/2" NPTF, PU 1 LIQ, SI 10 FA, SI AIR Learn More about Amphenol Rochester Sensors amphenol s28x capacitance coolant level switches	Datasheet	72In Stock	58,56 € 54,15 € 52,49 € 50,53 € View 49,18 € 47,94 € 46,97 € Quote	Min.: 1 Mult.: 1		S285
	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/4" NPTF, PU 1 LIQ, SS 0 FA, SI LIQ, SO AIR S285/109 Amphenol Rochester Sensors 1: 57,58 € 75In Stock New At Mouser	Mfr. Part No. S285/109 Mouser Part No 34-S285-109 New At Mouser	Amphenol Rochester Sensors	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/4" NPTF, PU 1 LIQ, SS 0 FA, SI LIQ, SO AIR Learn More about Amphenol Rochester Sensors amphenol s28x capacitance coolant level switches	Datasheet	75In Stock	57,58 € 53,22 € 51,60 € 49,66 € View 48,33 € 47,11 € 45,57 €	Min.: 1 Mult.: 1		S285
	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/2" NPTF, PU 1 LIQ, SS 10 FA, SI LIQ, SO AIR S285/V05 Amphenol Rochester Sensors 1: 71,65 € 36In Stock New At Mouser	Mfr. Part No. S285/V05 Mouser Part No 34-S285-V05 New At Mouser	Amphenol Rochester Sensors	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/2" NPTF, PU 1 LIQ, SS 10 FA, SI LIQ, SO AIR Learn More about Amphenol Rochester Sensors amphenol s28x capacitance coolant level switches	Datasheet	36In Stock	71,65 € 66,38 € 64,42 € 62,07 € View 60,48 € 59,00 € Quote	Min.: 1 Mult.: 1		S285
	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/4" NPTF, PU 1 LIQ, SI 10 FA, SI AIR S285/03 Amphenol Rochester Sensors 1: 52,40 € 9In Stock 100Expected 10/9/2026 New At Mouser	Mfr. Part No. S285/03 Mouser Part No 34-S285-03 New At Mouser	Amphenol Rochester Sensors	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/4" NPTF, PU 1 LIQ, SI 10 FA, SI AIR Learn More about Amphenol Rochester Sensors amphenol s28x capacitance coolant level switches	Datasheet	9In Stock 100Expected 10/9/2026	52,40 € 48,39 € 46,90 € 45,11 € View 43,89 € 42,76 € 41,07 €	Min.: 1 Mult.: 1		S285
	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/4"NPTF, PU 1 LIQ S298/202 Amphenol Rochester Sensors 1: 64,09 € 317On Order New At Mouser	Mfr. Part No. S298/202 Mouser Part No 34-S298-202 New At Mouser	Amphenol Rochester Sensors	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/4"NPTF, PU 1 LIQ Learn More about Amphenol Rochester Sensors amphenol s28x capacitance coolant level switches	Datasheet	317On Order On Order Ship Dates Mfr. No: S298/202 Stock: 0 On Order: 67 Expected 10/6/2026 250 Expected 10/29/2026 Factory Lead Time: 10 Weeks	64,09 € 59,31 € 57,53 € 55,40 € View 53,95 € 52,61 € Quote	Min.: 1 Mult.: 1		S298
	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/4" NPTF, PU 1 LIQ, SI 10 FA, SI LIQ S285/13 Amphenol Rochester Sensors 1: 52,40 € 100Expected 10/29/2026 New At Mouser	Mfr. Part No. S285/13 Mouser Part No 34-S285-13 New At Mouser	Amphenol Rochester Sensors	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/4" NPTF, PU 1 LIQ, SI 10 FA, SI LIQ Learn More about Amphenol Rochester Sensors amphenol s28x capacitance coolant level switches	Datasheet	100Expected 10/29/2026	52,40 € 48,39 € 46,90 € 45,11 € View 43,89 € 42,76 € 41,07 €	Min.: 1 Mult.: 1		S285