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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 (PHP) 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: ₱5,979.17 198In Stock New At Mouser	Mfr. Part # S287/03 Mouser Part # 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	₱5,979.17 ₱5,549.11 ₱5,388.98 ₱5,196.96 View ₱5,065.67 ₱4,945.42 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: ₱4,177.32 72In Stock New At Mouser	Mfr. Part # S285/05 Mouser Part # 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	₱4,177.32 ₱3,862.60 ₱3,744.80 ₱3,604.31 View ₱3,508.61 ₱3,419.65 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: ₱4,107.38 75In Stock New At Mouser	Mfr. Part # S285/109 Mouser Part # 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	₱4,107.38 ₱3,796.34 ₱3,681.00 ₱3,542.35 View ₱3,447.87 ₱3,360.75 Quote	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: ₱5,111.07 36In Stock New At Mouser	Mfr. Part # S285/V05 Mouser Part # 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	₱5,111.07 ₱4,735.61 ₱4,595.73 ₱4,428.24 View ₱4,314.13 ₱4,208.61 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: ₱3,738.06 10In Stock 100Expected 09/10/2026 New At Mouser	Mfr. Part # S285/03 Mouser Part # 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	10In Stock 100Expected 09/10/2026	₱3,738.06 ₱3,452.16 ₱3,345.42 ₱3,217.81 View ₱3,130.69 ₱3,050.32 ₱2,930.08	Min.: 1 Mult.: 1		S285
	Level Sensors - Industrial COOLANT LEVEL SWITCH, 1/4"NPTF, PU 1 LIQ S298/202 Amphenol Rochester Sensors 1: ₱4,571.80 373On Order New At Mouser	Mfr. Part # S298/202 Mouser Part # 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	373On Order On Order Ship Dates Mfr. #: S298/202 Stock: 0 On Order: 123 Expected 06/10/2026 250 Expected 29/10/2026 Factory Lead-Time: 10 Weeks	₱4,571.80 ₱4,231.31 ₱4,104.32 ₱3,952.17 View ₱3,848.49 ₱3,752.78 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: ₱3,738.06 100Expected 29/10/2026 New At Mouser	Mfr. Part # S285/13 Mouser Part # 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 29/10/2026	₱3,738.06 ₱3,452.16 ₱3,345.42 ₱3,217.81 View ₱3,130.69 ₱3,050.32 ₱2,930.08	Min.: 1 Mult.: 1		S285