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59040 Reed Sensors

Littelfuse 59040 Reed Sensors are small, cylindrical reed sensors 31.0mm (1.22") long that press into a 9.5mm (.375") diameter hole with a choice of normally open, normally closed, or change-over contacts. Littelfuse 59040 is capable of switching up to 200V_DC at 10W contact rating. An extensive range of sensitivity with a specified cable length is available. The housing color is white. It has three crush ribs along the length of the capsule that allow a firm and fixed press-fit. 59040 is well-suited for use in a wide range of industrial, appliances, or IoT proximity sensing applications. It functions best with a 57040 actuator.

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Part #

Proximity Sensors NO 12-18AT Untinned Leads

59040-1-S-02-F
Littelfuse
1: CHF 3.05
372In Stock

Mfr. Part No.
59040-1-S-02-F

Mouser Part No
934-59040-1-S-02-F

Proximity Sensors NO 12-18AT Untinned Leads

Datasheet

372In Stock

CHF 3.05

CHF 2.56

CHF 2.37

CHF 2.18

View

Min.: 1
Mult.: 1

Magnetic

25 mm

Wire

SPST-NO

Proximity Sensors NO 12-18AT Tinned Leads

59040-1-S-02-A
Littelfuse
1: CHF 3.20
886In Stock
1’600Expected 10/1/2026

Mfr. Part No.
59040-1-S-02-A

Mouser Part No
934-59040-1-S-02-A

Proximity Sensors NO 12-18AT Tinned Leads

Datasheet

886In Stock

1’600Expected 10/1/2026

CHF 3.20

CHF 2.68

CHF 2.48

CHF 2.02

View

Min.: 1
Mult.: 1

Magnetic

25 mm

Wire

SPST-NO

Proximity Sensors NO 17-23AT Untinned Leads

59040-1-T-02-F
Littelfuse
1: CHF 3.94
500In Stock

Mfr. Part No.
59040-1-T-02-F

Mouser Part No
934-59040-1-T-02-F

Proximity Sensors NO 17-23AT Untinned Leads

Datasheet

500In Stock

CHF 3.94

CHF 3.31

CHF 3.08

CHF 2.79

View

Min.: 1
Mult.: 1

Magnetic

21.2 mm

Wire

SPST-NO

Proximity Sensors NO 22-28AT Tinned Leads

59040-1-U-02-A
Littelfuse
1: CHF 3.20
120In Stock

Mfr. Part No.
59040-1-U-02-A

Mouser Part No
934-59040-1-U-02-A

Proximity Sensors NO 22-28AT Tinned Leads

Datasheet

120In Stock

CHF 3.20

CHF 2.68

CHF 2.48

CHF 2.42

View

Min.: 1
Mult.: 1

Magnetic

17.9 mm

Wire

SPST-NO

Proximity Sensors NC 15-20AT Tinned Leads

59040-4-S-02-A
Littelfuse
1: CHF 5.45
234In Stock
500Expected 2/4/2027

Mfr. Part No.
59040-4-S-02-A

Mouser Part No
934-59040-4-S-02-A

Proximity Sensors NC 15-20AT Tinned Leads

Datasheet

234In Stock

500Expected 2/4/2027

CHF 5.45

CHF 5.27

CHF 4.54

CHF 4.20

CHF 3.49

Min.: 1
Mult.: 1

Magnetic

21 mm

Wire

SPST-NC

Proximity Sensors NO 12-18AT JST typeXHP 2.5pitch

59040-1-S-02-E
Littelfuse
500: CHF 2.10
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
59040-1-S-02-E

Mouser Part No
934-59040-1-S-02-E

Proximity Sensors NO 12-18AT JST typeXHP 2.5pitch

Datasheet

Non-Stocked Lead-Time 16 Weeks

CHF 2.10

CHF 2.00

CHF 1.95

Min.: 500
Mult.: 100

Magnetic

25 mm

Wire

SPST-NO

Proximity Sensors NO 17-23AT Tinned Leads

59040-1-T-02-A
Littelfuse
1: CHF 3.20
Lead-Time 16 Weeks

Mfr. Part No.
59040-1-T-02-A

Mouser Part No
934-59040-1-T-02-A

Proximity Sensors NO 17-23AT Tinned Leads

Datasheet

Lead-Time 16 Weeks

CHF 3.20

CHF 3.17

CHF 2.68

CHF 2.48

View

Min.: 1
Mult.: 1

Magnetic

21.2 mm

Wire

SPST-NO

Proximity Sensors CO 15-20AT Tinned Leads

59040-3-S-02-A
Littelfuse
1: CHF 5.81
Non-Stocked Lead-Time 27 Weeks

Mfr. Part No.
59040-3-S-02-A

Mouser Part No
934-59040-3-S-02-A

Proximity Sensors CO 15-20AT Tinned Leads

Datasheet

Non-Stocked Lead-Time 27 Weeks

CHF 5.81

CHF 5.76

CHF 4.83

CHF 4.48

View

Min.: 1
Mult.: 1

Magnetic

21 mm

Wire

SPDT-CO

Proximity Sensors CO 20-25AT Tinned Leads

59040-3-T-02-A
Littelfuse
500: CHF 3.54
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
59040-3-T-02-A

Mouser Part No
934-59040-3-T-02-A

Proximity Sensors CO 20-25AT Tinned Leads

Datasheet

Non-Stocked Lead-Time 16 Weeks

CHF 3.54

CHF 3.39

Min.: 500
Mult.: 100

Magnetic

18.4 mm

Wire

SPDT-CO

Proximity Sensors CO 25-30AT Tinned Leads

59040-3-U-02-A
Littelfuse
500: CHF 3.54
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
59040-3-U-02-A

Mouser Part No
934-59040-3-U-02-A

Proximity Sensors CO 25-30AT Tinned Leads

Datasheet

Non-Stocked Lead-Time 16 Weeks

CHF 3.54

CHF 3.39

Min.: 500
Mult.: 100

Magnetic

17 mm

Wire

SPDT-CO

Proximity Sensors NC 20-25AT Tinned Leads

59040-4-T-02-A
Littelfuse
500: CHF 3.31
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
59040-4-T-02-A

Mouser Part No
934-59040-4-T-02-A

Proximity Sensors NC 20-25AT Tinned Leads

Datasheet

Non-Stocked Lead-Time 16 Weeks

CHF 3.31

CHF 3.16

Min.: 500
Mult.: 100

Magnetic

18.4 mm

Wire

SPST-NC

Proximity Sensors NC 25-30AT Tinned Leads

59040-4-U-02-A
Littelfuse
500: CHF 3.31
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
59040-4-U-02-A

Mouser Part No
934-59040-4-U-02-A

Proximity Sensors NC 25-30AT Tinned Leads

Datasheet

Non-Stocked Lead-Time 16 Weeks

CHF 3.31

CHF 3.16

Min.: 500
Mult.: 100

Magnetic

17 mm

Wire

SPST-NC