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Sensors Portfolio

Littelfuse is a global leader in magnetic sensing solutions with a portfolio covering reed switches, reed sensors, hall effect sensors, reed relays, and magnetic actuators. Littelfuse also offers a broad range of thermistors, resistance temperature detectors (RTDs), digital temperature indicators, and probes and assemblies for temperature sensing applications.

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Part #

Magnetic/Reed Switches MLRR-3 32-38

MLRR-3-32-38
Littelfuse
1: $1.65
221In Stock

Mfr. Part No.
MLRR-3-32-38

Mouser Part No
934-MLRR-332-38

Littelfuse

Magnetic/Reed Switches MLRR-3 32-38

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Datasheet

221In Stock

$1.65

$1.43

$1.32

$1.18

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Min.: 1
Mult.: 1

Magnetic/Reed Switches MLRR-4 17-23

MLRR-4-17-23
Littelfuse
1: $1.77
1,028In Stock

Mfr. Part No.
MLRR-4-17-23

Mouser Part No
934-MLRR-417-23

Littelfuse

Magnetic/Reed Switches MLRR-4 17-23

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Datasheet

1,028In Stock

$1.77

$1.50

$1.40

$1.24

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Min.: 1
Mult.: 1

Magnetic/Reed Switches SWITCH REED

MLRR-4-17-38
Littelfuse
1: $1.90
1,548In Stock

Mfr. Part No.
MLRR-4-17-38

Mouser Part No
934-MLRR-417-38

Littelfuse

Magnetic/Reed Switches SWITCH REED

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Datasheet

1,548In Stock

$1.90

$1.72

$1.58

$1.45

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Min.: 1
Mult.: 1

Magnetic/Reed Switches MLRR-4 27-33

MLRR-4-27-33
Littelfuse
1: $1.93
701In Stock

Mfr. Part No.
MLRR-4-27-33

Mouser Part No
934-MLRR-427-33

Littelfuse

Magnetic/Reed Switches MLRR-4 27-33

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Datasheet

701In Stock

$1.93

$1.64

$1.53

$1.36

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Min.: 1
Mult.: 1

Reed Relays HE3321A1200 REED RELAY

HE3321A1200
Littelfuse
1: $3.91
209In Stock
Factory Special Order

Mfr. Part No.
HE3321A1200

Mouser Part No
934-HE3321A1200

Factory Special Order

Littelfuse

Reed Relays HE3321A1200 REED RELAY

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Datasheet

209In Stock

$3.91

$3.49

$3.32

$3.21

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Min.: 1
Mult.: 1

Reed Relays HE3321A2400 REED RELAY

HE3321A2400
Littelfuse
1: $3.50
601In Stock
Factory Special Order

Mfr. Part No.
HE3321A2400

Mouser Part No
934-HE3321A2400

Factory Special Order

Littelfuse

Reed Relays HE3321A2400 REED RELAY

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Datasheet

601In Stock

$3.50

$3.13

$2.99

$2.75

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Min.: 1
Mult.: 1

Reed Relays HE3351A2400

HE3351A2400
Littelfuse
1: $5.05
549In Stock
Factory Special Order

Mfr. Part No.
HE3351A2400

Mouser Part No
934-HE3351A2400

Factory Special Order

Littelfuse

Reed Relays HE3351A2400

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Datasheet

549In Stock

$5.05

$4.50

$4.30

$4.14

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Min.: 1
Mult.: 1

Reed Relays HE3621A0540

HE3621A0540
Littelfuse
1: $3.71
36In Stock
Factory Special Order

Mfr. Part No.
HE3621A0540

Mouser Part No
934-HE3621A0540

Factory Special Order

Littelfuse

Reed Relays HE3621A0540

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Datasheet

36In Stock

$3.71

$3.31

$3.16

$3.06

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Min.: 1
Mult.: 1

Reed Relays REED RELAY

HE3621A1250
Littelfuse
1: $4.39
132In Stock
Factory Special Order

Mfr. Part No.
HE3621A1250

Mouser Part No
934-HE3621A1250

Factory Special Order

Littelfuse

Reed Relays REED RELAY

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Datasheet

132In Stock

$4.39

$3.89

$3.75

$3.68

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Min.: 1
Mult.: 1

Reed Relays REED RELAY

HE721C0500
Littelfuse
1: $4.92
22In Stock
Factory Special Order

Mfr. Part No.
HE721C0500

Mouser Part No
934-HE721C0500

Factory Special Order

Littelfuse

Reed Relays REED RELAY

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Datasheet

22In Stock

$4.92

$4.52

$4.10

$4.03

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Min.: 1
Mult.: 1

Reed Relays HE721C0530 REED RELAY

HE721C0530
Littelfuse
1: $10.62
12In Stock
Factory Special Order

Mfr. Part No.
HE721C0530

Mouser Part No
934-HE721C0530

Factory Special Order

Littelfuse

Reed Relays HE721C0530 REED RELAY

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Datasheet

12In Stock

$10.62

$9.47

$9.04

$8.73

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Min.: 1
Mult.: 1

Reed Relays HE722A2400 REED RELAY

HE722A2400
Littelfuse
1: $5.03
307In Stock
Factory Special Order

Mfr. Part No.
HE722A2400

Mouser Part No
934-HE722A2400

Factory Special Order

Littelfuse

Reed Relays HE722A2400 REED RELAY

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Datasheet

307In Stock

$5.03

$4.49

$4.30

$4.16

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Min.: 1
Mult.: 1

Hall Effect / Magnetic Sensors - Industrial 55140 AP02A HALL SENSOR

55140-AP-02-A
Littelfuse
1: $14.01
17In Stock

Mfr. Part No.
55140-AP-02-A

Mouser Part No
934-55140AP02A

Littelfuse

Hall Effect / Magnetic Sensors - Industrial 55140 AP02A HALL SENSOR

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Datasheet

17In Stock

$14.01

$12.84

$12.41

$12.00

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Min.: 1
Mult.: 1

Proximity Sensors NO 17-23AT 300mm TIN

59022-1-T-02-A
Littelfuse
1: $5.25
39In Stock

Mfr. Part No.
59022-1-T-02-A

Mouser Part No
934-59022-1-T-02-A

Littelfuse

Proximity Sensors NO 17-23AT 300mm TIN

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Datasheet

39In Stock

$5.25

$4.60

$3.99

$3.54

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Min.: 1
Mult.: 1

Proximity Sensors CO 20-25AT 300mm TIN

59022-3-T-02-A
Littelfuse
1: $7.08
152In Stock

Mfr. Part No.
59022-3-T-02-A

Mouser Part No
934-59022-3-T-02-A

Littelfuse

Proximity Sensors CO 20-25AT 300mm TIN

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Datasheet

152In Stock

$7.08

$5.80

$5.78

$5.14

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Min.: 1
Mult.: 1

Magnetic/Reed Switches MDSM-4B 5276 12-18

MDSM-4B-12-18
Littelfuse
1: $2.15
25In Stock

Mfr. Part No.
MDSM-4B-12-18

Mouser Part No
934-MDSM-4B12-18

Littelfuse

Magnetic/Reed Switches MDSM-4B 5276 12-18

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Datasheet

25In Stock

$2.15

$1.72

$1.70

$1.50

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Min.: 1
Mult.: 1

Magnetic/Reed Switches NO 25-30AT

MDSR-10-25-30
Littelfuse
1: $1.81
985In Stock

Mfr. Part No.
MDSR-10-25-30

Mouser Part No
934-MDSR-10-25-30

Littelfuse

Magnetic/Reed Switches NO 25-30AT

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Datasheet

985In Stock

$1.81

$1.54

$1.43

$1.27

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Min.: 1
Mult.: 1

Hall Effect / Magnetic Sensors - Industrial 3 Wire SW 500mm TIN

55100-3H-04-A
Littelfuse
1: $9.41
5,492On Order

Mfr. Part No.
55100-3H-04-A

Mouser Part No
934-55100-3H-04-A

Littelfuse

Hall Effect / Magnetic Sensors - Industrial 3 Wire SW 500mm TIN

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Datasheet

5,492On Order

$9.41

$9.04

$8.28

$8.01

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Min.: 1
Mult.: 1

Hall Effect / Magnetic Sensors - Industrial MINI FLANGE MT PROX SEN ANALOG

55100-AP-02-A
Littelfuse
1: $22.99
300Expected 17/2/2026

Mfr. Part No.
55100-AP-02-A

Mouser Part No
934-55100AP02A

Littelfuse

Hall Effect / Magnetic Sensors - Industrial MINI FLANGE MT PROX SEN ANALOG

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Datasheet

300Expected 17/2/2026

$22.99

$20.00

$18.90

$17.35

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Min.: 1
Mult.: 1

Proximity Sensors PROX SENS CHANGE OVER UNTINNED

59025-3-T-02-F
Littelfuse
1: $8.16
500Expected 13/4/2026

Mfr. Part No.
59025-3-T-02-F

Mouser Part No
934-59025-3-T-02-F

Littelfuse

Proximity Sensors PROX SENS CHANGE OVER UNTINNED

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Datasheet

500Expected 13/4/2026

$8.16

$6.30

$5.60

$5.16

Min.: 1
Mult.: 1

Proximity Sensors NC 15-20AT 1m TIN 59025 Firecracker

59025-4-S-05-A
Littelfuse
1: $10.94
307Expected 28/5/2026

Mfr. Part No.
59025-4-S-05-A

Mouser Part No
934-59025-4-S-05-A

Littelfuse

Proximity Sensors NC 15-20AT 1m TIN 59025 Firecracker

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Datasheet

307Expected 28/5/2026

$10.94

$8.42

$7.51

$7.06

Min.: 1
Mult.: 1

Proximity Sensors NO 12-18AT Tinned Leads

59040-1-S-02-A
Littelfuse
1: $5.14
1,272On Order

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

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

Littelfuse

Proximity Sensors NO 12-18AT Tinned Leads

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Datasheet

1,272On Order

$5.14

$3.99

$3.54

$3.25

View

Min.: 1
Mult.: 1

Proximity Sensors CO 15-20AT Tinned Leads

59040-3-S-02-A
Littelfuse
1: $9.33
395Expected 10/3/2026

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

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

Littelfuse

Proximity Sensors CO 15-20AT Tinned Leads

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Datasheet

395Expected 10/3/2026

$9.33

$7.19

$6.41

$5.88

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Min.: 1
Mult.: 1

Proximity Sensors 59060-3-S-05-A SENS

59060-3-S-05-A
Littelfuse
1: $21.57
600Expected 10/7/2026

Mfr. Part No.
59060-3-S-05-A

Mouser Part No
934-59060-3-S-05-A

Littelfuse

Proximity Sensors 59060-3-S-05-A SENS

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Datasheet

600Expected 10/7/2026

$21.57

$16.54

$14.82

$13.71

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Min.: 1
Mult.: 1

Proximity Sensors 59070-1-T-02-A SENS

59070-1-T-02-A
Littelfuse
1: $6.35
591Expected 19/5/2026

Mfr. Part No.
59070-1-T-02-A

Mouser Part No
934-59070-1-T-02-A

Littelfuse

Proximity Sensors 59070-1-T-02-A SENS

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Datasheet

591Expected 19/5/2026

$6.35

$4.91

$4.36

$3.99

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Min.: 1
Mult.: 1

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