Liquid Level Switches

Filter

Liquid level switches are used to detect and control the level of liquids in tanks, reservoirs & pipelines to monitor and maintain desired liquid levels. They work on the principle...Read more

MADISON -

Plastic Single-Point Liquid Level Switches

StyleModelFloat LengthFloat Dia.Body MaterialOperating Temp.MountingFloat MaterialMax. CurrentStem MaterialPrice (ex. VAT)
AM87501 3/4"1"Polypropylene221°FHorizontalPolypropylene0.28APolypropylene€26.12
BM87101 3/4"1"Polypropylene221°FHorizontalPolypropylene0.28APolypropylene€70.94
CM87051 3/4"1"Polypropylene221°FHorizontalPolypropylene0.28APolypropylene€55.39
DM87901 3/4"1"Polypropylene221°FHorizontalPolypropylene0.28APolypropylene€25.01
EM8000B1"1"Polypropylene221°FVertical Open TankPolypropylene0.28APolypropylene€44.79
FM80001"1"Polypropylene221°FVertical Open TankPolypropylene-Polypropylene€20.86
GM70001"1"PBT221°FVertical Open TankBuna N0.28APBT€26.72
HM40101"1"Brass221°FHorizontalBuna N0.28ABrass€81.79
IM90001"1"Kynar221°FVertical Open TankKynar0.28AKynar€40.22
JM59701"1"Stainless Steel392°FHorizontalStainless Steel0.28AStainless Steel€164.05
KMSB88002"1 1/2"Polypropylene221°FVertical Open TankPolypropylene0.5APolypropylene€135.42
LM88002"1 1/2"Polypropylene221°FVertical Open TankPolypropylene0.5APolypropylene€77.73
MM59102"0.63"Stainless Steel392°FHorizontalStainless Steel0.28AStainless Steel€199.62
NM43002"1 1/4"Brass221°FVertical Open TankBuna N0.5ABrass€78.63
OM59002"0.63"Stainless Steel392°FHorizontalStainless Steel0.28AStainless Steel€212.26
PM8700-C2.06"1/2"Polypropylene221°FHorizontalPolypropylene0.28APolypropylene€26.69
QM59172.08"2.13"Stainless Steel482°FVertical Open TankStainless Steel0.5AStainless Steel€135.59
RM77402.11"0.65"PBT266°FHorizontalPBT0.28APBT€35.03
SM77502.11"0.65"PBT266°FHorizontal-0.28APBT€32.66
TM77902.11"0.65"PBT266°FHorizontalPBT0.28APBT€36.75
UM77002.11"0.65"PBT149°FHorizontalPBT0.28APBT€28.05
VM97002.11"0.65"Kynar221°FHorizontalKynar0.28AKynar€46.83
WM97052.11"0.65"Kynar221°FHorizontalKynar0.28AKynar€82.99
XM87002.11"0.65"Polypropylene221°FHorizontalPolypropylene0.28APolypropylene€19.67
YM77252.11"0.65"PBT266°FHorizontalPBT0.28APBT€37.21
MADISON -

Adjustable-Level Liquid Level Switches

StyleModelFloat MaterialFloat LengthFloat Dia.Body MaterialOperating Temp.MountingWidthStem MaterialPrice (ex. VAT)
AM4302-7807-6Buna N2"1 1/4"Brass221°FVertical Open Tank7"Brass€189.65
RFQ
BM5602-7808-1Stainless Steel2.1"2.13"Stainless Steel392°FVertical Open Tank1 1/4"Stainless Steel€337.30
CM5602-7808-6Stainless Steel2"2.13"Stainless Steel392°FVertical Open Tank1 1/4"Stainless Steel€312.18
RFQ
BARKSDALE -

Liquid Level Switches

StyleModelSwitch FunctionVa RatingFloat MaterialBody MaterialOperating Temp.MountingMax. VoltageMax. CurrentPrice (ex. VAT)
A0111-588---------
RFQ
B0111-609---------
RFQ
C0112-1110---------
RFQ
D0111-509---------
RFQ
C0112-988---------
RFQ
D0111-510Selectable40 VAPolyethyleneStainless Steel70°FVertical Open Tank230V1A€338.01
MADISON -

Selectable Multi-level Liquid Level Switch

StyleModelFloat MaterialFloat LengthFloat Dia.Body MaterialOperating Temp.MountingStem MaterialGaugePrice (ex. VAT)
AML8888Buna N1.86"1 1/2"Polypropylene221°FVertical Open TankPolypropylene23 ga.€355.01
BML4444Buna N2"1 1/4"Polypropylene221°FVertical Open TankBrass22 ga.€462.01
CML5555Stainless Steel2.1"2.13"Stainless Steel392°FVertical Open TankStainless Steel22 ga.€800.38
MADISON -

Close On Rise Drum Liquid Level Switch

StyleModelFloat MaterialFloat LengthBody MaterialOperating Temp.MountingStem MaterialFloat Specific GravitySwitch FunctionPrice (ex. VAT)
AM4168-1Buna N1 1/4"Brass221°FVertical Open TankBrass0.5Close On Rise€147.85
BM4169-1Stainless Steel1.59"Stainless Steel302°FVertical Open TankStainless Steel0.73Close On Rise€184.63
SQUARE D -

Liquid Level Switches

StyleModelMPNPrice (ex. VAT)
A9037HG34Z209037HG34Z20-
RFQ
A9037HG35R9037HG35R€253.80
A9037HG38Z209037HG38Z20€295.11
B9037HR329037HR32-
RFQ
C9037HW329037HW32€715.89
D9038CW369038CW36€1,386.78
E9049A6A9049A6A€249.55
F9049EF29049EF2€167.40
G9049ER29049ER2-
RFQ
G9049ER79049ER7€32.59
H9998PC3389998PC338€30.98
MADISON -

Open On Rise Liquid Level Switch

StyleModelFloat MaterialFloat LengthFloat Dia.Operating Temp.MountingBody MaterialMax. CurrentStem MaterialPrice (ex. VAT)
AM3782Buna N1"1"221°FVertical Open TankBrass0.28ABrass€165.38
BM4035Polypropylene11/25"0.78"221°FVertical Open Tank-0.12AStainless Steel€62.77
CM8800-PRPolypropylene2"1 1/2"221°FVertical Open TankPolypropylene1APolypropylene€131.99
DM8000-CPolypropylene3/4"7/8"140°FVertical Open TankPolypropylene0.28APolypropylene€37.79
EM3326Polypropylene0.63"0.58"221°FVertical Open TankPolypropylene-Polypropylene€34.25
FM3326-NPTPolypropylene0.63"0.58"221°FVertical Open TankPolypropylene0.12APolypropylene€47.19
GM3827-2Stainless Steel1"1.54"392°FHorizontalStainless Steel0.28AStainless Steel€154.11
HM3827-3Stainless Steel1"1.54"392°FHorizontalStainless Steel0.28AStainless Steel€174.99
MADISON -

Selectable Liquid Level Switch

StyleModelFloat MaterialFloat LengthFloat Dia.Body MaterialOperating Temp.MountingMax. CurrentStem MaterialPrice (ex. VAT)
AM3326-SMPolypropylene0.63"0.58"Polypropylene221°FHorizontal0.12APolypropylene€26.03
BM8790-14/4184Polypropylene1 3/4"1"Polypropylene221°FHorizontal0.28APolypropylene€45.43
CMS8010Polypropylene1"1"Stainless Steel221°FHorizontal0.28AStainless Steel€80.28
DM5600Stainless Steel2.1"2.13"Stainless Steel392°FVertical Open Tank0.5AStainless Steel€115.46
EM4065Stainless Steel3"1 1/2"Stainless Steel257°FHorizontal-Stainless Steel€652.43
FM3727Stainless Steel3/4"0.65"Stainless Steel392°FHorizontal0.28AStainless Steel€174.09
SQUARE D -

Close On Rise Liquid Level Switch

StyleModelFloat LengthFloat Dia.Operating Temp.Max. VoltageBody MaterialMountingContact FormConduit SizePrice (ex. VAT)
A9037EW94 1/2"3.63"-22°F to +220°F600VAluminumVertical Open Tank-2 3/4"€1,095.09
B9037EG104 1/2"3.63"-22°F to +220°F600VSteelVertical Open Tank-3 1/2"€471.45
B9037EG84 1/2"3.63"-22°F to +220°F575VSteelVertical Open Tank-3 1/2"€493.06
B9037EG94 1/2"3.63"-22°F to +220°F575V-Vertical Open Tank-3 1/2"€300.00
C9036DW317"7"-22°F to +220°F575VAluminumVertical Open Tank-2 3/4"€575.10
D9036GW1H7"7"-22°F to +220°F600VAluminumVertical Open TankDPST/NO/NC2 3/4"€957.85
D9036GG2H7"7"-22°F to +220°F600VThermoplasticVertical Open TankDPST/NO/NC3 1/2"€180.80
D9036GG27"7"-22°F to +220°F575VThermoplasticVertical Open Tank-3 1/2"€153.44
D9036DG2C7"7"-22°F to +220°F575VPolypropylene--3 1/2"€98.95
E9038CG36LZ207"2 1/2"-22°F to +220°F600VSteelHorizontal--€631.88
D9036DG2S127"7"-22°F to +220°F600VSteelVertical Open TankDPST1/2"€151.18
D9036GW17"7"-22°F to +220°F575VAluminumVertical Open Tank-2 3/4"€812.99
RFQ
D9036DR31C7"7"-22°F to +220°F600VAluminumVertical Open Tank-2 3/4"€445.42
F9036DG27"7"-22°F to +220°F575VPolypropylene--3 1/2"€90.93
G9038CW337"2 1/2"-22°F to +220°F600VAluminumSide-2 3/4"-
RFQ
H9036FG307"7"-22°F to +220°F600VPolypropyleneVertical Open Tank-2 7/8"€36.62
D9036DR317"7"-22°F to +220°F575VAluminumVertical Open Tank-2 3/4"€482.42
I9037HG377.13"2.58"-22°F to +220°F600VSteelHorizontal-3 1/2"€224.86
J9037HG36LZ207.13"2.58"250°F600VSteelHorizontal-3 1/2"€191.52
I9037HG357.13"2.58"-22°F to +220°F600VSteelHorizontal-3 1/2"€224.86
I9037HG32L7.13"2.58"-22°F to +220°F600VSteelHorizontal-3 1/2"€165.88
K9037HW357.13"2.58"-22°F to +220°F600VAluminumHorizontal-2 3/4"€613.86
I9037HG33Z207.13"2.58"250°F600VSteelHorizontal-3 1/2"€202.22
J9037HG32Z207.13"2.58"250°F600VSteelHorizontal-3 1/2"€227.70
I9037HG367.13"2.58"-22°F to +220°F600VSteelHorizontal-3 1/2"€224.86
SQUARE D -

Open On Rise Liquid Level Switch

StyleModelFloat LengthFloat Dia.Body MaterialMax. VoltageMountingFloat PositionFloat TravelHeightPrice (ex. VAT)
A9036DG2R7"7"Polypropylene575VVertical Open TankBelow1 1/4"4.27"€94.43
A9036GG2R7"7"Thermoplastic575VVertical Open TankBelow1 1/4"-€158.36
A9036DG2CR7"7"Polypropylene600VVertical Open TankBelow1 1/4"4 1/2"€110.19
A9036GW1R7"7"Aluminum600V-Below1 1/4"8 1/4"€961.12
RFQ
B9037HG33R7.13"2.58"Steel600VHorizontalRight3"5.98"€230.89
B9037HG30R7.13"2.58"Steel600VHorizontalLeft4 1/2"5.98"€224.86
B9037HG31R7.13"2.58"Steel600VHorizontalRight4 1/2"5.98"€198.41
B9037HG34R7.13"2.58"Steel600VHorizontalLeft6 1/4"4 11/25"€216.71
MADISON -

Open On Rise Drum Liquid Level Switch

StyleModelFloat MaterialFloat LengthBody MaterialOperating Temp.MountingStem MaterialFloat Specific GravitySwitch FunctionPrice (ex. VAT)
AM4168-2Buna N1 1/4"Brass221°FVertical Open TankBrass0.5Open On Rise€175.97
BM4169-2Stainless Steel1.59"Stainless Steel302°FVertical Open TankStainless Steel0.73Open On Rise€215.29
MADISON -

Selectable Drum Liquid Level Switch

StyleModelFloat MaterialFloat LengthBody MaterialOperating Temp.MountingStem MaterialFloat Specific GravitySwitch FunctionPrice (ex. VAT)
AM4168-3Buna N1 1/4"Brass221°FVertical Open TankBrass0.5Select€204.09
BM4169-3Stainless Steel1.59"Stainless Steel302°FVertical Open TankStainless Steel0.73Select€302.27
MADISON -

Open On Rise Multi-level Liquid Level Switch

StyleModelFloat MaterialFloat LengthFloat Dia.Body MaterialOperating Temp.MountingMax. CurrentStem MaterialPrice (ex. VAT)
AM8085Polypropylene1"1"Polypropylene221°FVertical Open Tank0.28APolypropylene€90.75
BM5605Stainless Steel2"2.13"Stainless Steel392°FVertical Open Tank0.5AStainless Steel€224.19
MADISON -

Open On Rise Ultra Low Level Liquid Switch

StyleModelFloat MaterialFloat LengthBody MaterialMountingStem MaterialFloat Specific GravitySwitch FunctionContact FormPrice (ex. VAT)
AM4400-ULL-NCBuna N1 4/25"BrassVertical Open TankStainless Steel0.44Open On RiseSPST€82.47
BM9000-ULL-NCKynar1 4/25"KynarVertical Open TankKynar0.69Open On RiseSPST€59.53
CM8000-ULL-NCPolypropylene1 4/25"PolypropyleneVertical Open TankPolypropylene0.42Open On RiseSPST€63.60
DM8020-ULL-NCPolypropylene1"Stainless SteelVertical Open TankStainless Steel0.42Open On RiseSPST€67.86
MADISON -

Close On Rise Ultra Low Level Liquid Switch

StyleModelFloat MaterialFloat LengthBody MaterialMountingStem MaterialFloat Specific GravitySwitch FunctionContact FormPrice (ex. VAT)
AM4400-ULL-NOBuna N1 4/25"BrassVertical Open TankStainless Steel0.44Close On RiseSPST€67.62
BM7000-ULL-NOBuna N1 4/25"PBTVertical Open TankPBT0.44Close On RiseSPST€83.71
CM4500-ULL-NOBuna N1"BrassVertical Open TankBrass0.44Close On RiseSPST€70.24
DM9000-ULL-NOKynar1 4/25"KynarVertical Open TankKynar0.69Close On RiseSPST€70.33
EM4400-PBT-ULL-NOPBT1 4/25"BrassVertical Open TankStainless Steel0.55Close On RiseSPST€53.62
BM7000-PBT-ULL-NOPBT1 4/25"PBTVertical Open TankPBT0.55Close On RiseSPST€54.94
FM8020-ULL-NOPolypropylene1"Stainless SteelVertical Open TankStainless Steel0.42Close On RiseSPST€68.07
GM8000-ULL-NOPolypropylene1 4/25"PolypropyleneVertical Open TankPolypropylene0.42Close On RiseSPST€61.93
SQUARE D -

Close On Rise Liquid 2-Level Switch

StyleModelFloat Dia.Operating Temp.MountingHeightWidthFloat PositionFloat TravelSwitch FunctionPrice (ex. VAT)
A9038CG36N4LZ202 1/2"250°FHorizontal5.94"6 21/25"Left6 1/2"Close On Rise€659.86
B9038CG36N42 1/2"-22°F to +220°FHorizontal5.94"6 21/25"Left6 1/2"Close On Rise€769.16
C9038AG1N47"-22°F to +220°FVertical Open Tank4 1/2"4.69"Below1 1/4"Close On Rise€377.72
MADISON -

Stainless Steel Single-Point Liquid Level Switches

StyleModelContact FormFloat MaterialFloat LengthFloat Dia.Body MaterialOperating Temp.MountingMax. CurrentPrice (ex. VAT)
AM4190-HPSPDTStainless Steel2 1/25"2 1/25"Stainless Steel302°FHorizontal1A€403.89
BM4190SPDTStainless Steel4"1"Stainless Steel302°FHorizontal1A€443.96
CM4190-BUSPDTBuna N3"23/25"Stainless Steel221°FHorizontal1A€407.37
DMS7000SPSTBuna N1"1"PBT221°FVertical Open Tank0.28A€34.23
EMS8000SPSTPolypropylene1"1"Polypropylene221°FVertical Open Tank0.28A€28.31
FMS8800SPSTPolypropylene2.68"1 1/2"Polypropylene221°FVertical Open Tank0.5A€81.02
GMS9000SPSTKynar1"1"Kynar221°FVertical Open Tank0.28A€47.59
HMSB5600SPSTStainless Steel2.5"2.13"Stainless Steel221°FVertical Open Tank0.5A€231.18
IM5000SPSTStainless Steel1.19"1.13"Stainless Steel392°FVertical Open Tank0.28A€76.61
JM5010SPSTStainless Steel1.18"1.13"Stainless Steel392°FHorizontal0.28A€93.09
KMS5010SPSTStainless Steel1.19"1.13"Stainless Steel392°FHorizontal0.28A€143.13
LMS5917SPSTStainless Steel2"2.13"Stainless Steel482°FVertical Open Tank0.5A€109.63
MM5600-PRSPSTStainless Steel2.1"2"Stainless Steel392°FVertical Open Tank1A€157.50
NM5920SPSTStainless Steel3/4"0.13"Stainless Steel392°FHorizontal0.28A€196.67
SQUARE D -

Close On Rise Alternator Liquid Level Switch

StyleModelFloat Dia.Body MaterialOperating Temp.MountingMax. VoltageFloat LengthWidthFloat TravelPrice (ex. VAT)
A9038CG32N52 1/2"Steel-22°F to +220°FHorizontal600V7"6 21/25"6 1/2"€778.13
A9038CG322 1/2"Steel-22°F to +220°FHorizontal600V7"10 4/25"6 1/2"€642.47
A9038CG342 1/2"Steel-22°F to +220°FHorizontal600V7"6 21/25"6 1/2"€638.75
A9038CG332 1/2"Steel-22°F to +220°FHorizontal600V7"10 4/25"3 3/4"€618.86
A9038CG32Z202 1/2"Steel250°FHorizontal600V7"6 21/25"6 1/2"€659.39
B9038CG362 1/2"Steel-22°F to +220°FHorizontal600V7"10 4/25"4 1/2"€633.86
C9038CG31F32 1/2"Steel-22°F to +220°FHorizontal600V7"6 21/25"6 1/2"€606.10
A9038CG33Z202 1/2"Steel250°FHorizontal600V7"6 21/25"6 1/2"€647.55
A9038CG312 1/2"Steel-22°F to +220°FHorizontal600V7"10 4/25"6 1/2"€650.14
D9038CW322 1/2"Steel-22°F to +200°FVertical Open Tank575V7"6 21/25"6 1/2"€1,305.02
C9038CG33F32 1/2"Steel-22°F to +220°FHorizontal600V7"6 21/25"6 1/2"€616.52
E9038CW312 1/2"Aluminum-22°F to +220°FHorizontal600V7"6 21/25"6 1/2"-
RFQ
B9038CG36Z202 1/2"Steel250°FHorizontal600V7"6 21/25"6 1/2"€648.79
F9038DW83.63"Aluminum-22°F to +220°FVertical600V4 1/2"5 3/4"8 3/4"€1,364.13
G9038DG73.63"Steel-22°F to +220°FVertical Open Tank600V4 1/2"6 1/2"8 3/4"€740.04
G9038DG93.63"Steel-22°F to +200°FVertical Open Tank575V4 1/2"6 21/25"8 3/4"€815.66
G9038DG83.63"Steel-22°F to +220°FVertical Open Tank600V4 1/2"6 1/2"8 3/4"€750.06
H9038AG1N57"Steel-22°F to +220°FVertical Open Tank600V7"4.69"1 1/4"€485.51
I9038AW1N57"Aluminum-22°F to +220°FVertical Open Tank600V7"5.35"1 1/4"€1,138.08
I9038AR17"Aluminum-22°F to +220°FVertical Open Tank600V-5.35"1 1/4"€938.80
H9038AG1C7"Steel-22°F to +220°FVertical Open Tank600V7"4.69"1 1/4"€336.81
I9038AW17"Aluminum-22°F to +220°FVertical Open Tank600V7"4.69"1 1/4"€960.20
H9038AG1S67"Steel-22°F to +220°FVertical Open Tank600V7"4.69"1 1/4"€365.84
H9038AG17"Steel-22°F to +220°FVertical Open Tank600V7"4.69"1 1/4"€294.90
MADISON -

Close On Rise Liquid Level Switch

StyleModelFloat MaterialFloat LengthFloat Dia.Body MaterialOperating Temp.MountingMax. CurrentStem MaterialPrice (ex. VAT)
AM8000-NOPolypropylene1"1"Polypropylene221°FVertical Open Tank0.28APolypropylene€21.86
BM3326-NOPolypropylene0.63"0.58"Polypropylene221°FVertical Open Tank0.12APolypropylene€35.47
CM3326-NPT-NOPolypropylene0.63"0.58"Polypropylene221°FVertical Open Tank0.12APolypropylene€47.30
DM3827-3NOStainless Steel1"1.54"Stainless Steel392°FHorizontal0.28AStainless Steel€148.98
DM3827-2NOStainless Steel1"1.54"Stainless Steel392°FHorizontal0.28AStainless Steel€147.56
PROSENSE -

Vibration Fork Liquid Level Switch, Any Orientation Mount, 3.44 Inch Insertion Length

ModelItemPrice (ex. VAT)
VFL50-100L-3HCV8CFM€320.40
PROSENSE -

Float Liquid Level Switch, Vertical Top Mount, 1.63 Inch Insertion Length

ModelItemPrice (ex. VAT)
FLS-VM-200CV8BEZ€27.90
12...67

Frequently Asked Questions

What is the difference between a normally open (NO) and normally closed (NC) liquid level switch?

A normally open (NO) liquid level switch stays in the open state when the liquid level is below the set threshold and closes the circuit when the liquid level rises to the desired level. A normally closed (NC) switch operates oppositely, being in a closed state when the liquid level is below the threshold and opening the circuit when the liquid level reaches the set level.

Why do some people use multiple liquid level switches in the same tank?

Utilising multiple liquid level switches in the same tank provides redundancy and more precise level control. They can be wired in parallel or series, depending on the desired functionality.

How do I troubleshoot a liquid level switch that is not functioning properly?

Troubleshooting measures include checking electrical connections, verifying power supply, inspecting for damage or debris affecting switch operation and ensuring proper switch calibration.

We are here to help!

Looking for a part not listed here?