Thermal Cut-offs – Mouser Israel

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B Series Bimetal Snap-Action Temperature Switches

Microtherm Sentronic B Series Bimetal Snap-Action Temperature Switches feature a bimetallic snap-disc with a fixed switching temperature as the switching mechanism. The function of these switches includes typically closed or normally open operation, commonly used as a temperature limiter to protect or control devices from overheating. The B Series offers a current rating of 1-13A max to 30A, up to 10,000 switching cycles, with various packaging options. These switches also feature non-current carrying brass contacts. Microtherm Sentronic B Series Bimetal Snap-Action Temperature Switches are ideal for motors, transformers, electronics, sensors, pumps, converters, and more applications.

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Part #

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 125C switch temp.

B12A12505L310100U186
Microtherm Sentronic
1: $8.98
590In Stock

Mfr. Part No.
B12A12505L310100U186

Mouser Part No
256-B2A2505L3000U86

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 125C switch temp.

Learn More

Datasheet

590In Stock

$8.98

$7.78

$6.28

$5.32

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 150C switch temp.

B12A15005 L370100U253
Microtherm Sentronic
1: $6.26
610In Stock

Mfr. Part No.
B12A15005 L370100U253

Mouser Part No
256-B2A5005L3000U253

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 150C switch temp.

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Datasheet

610In Stock

$6.26

$5.28

$4.90

$4.45

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 90C switch temp.

B12A09005L310100
Microtherm Sentronic
1: $5.97
408In Stock
500Expected 21/08/2026

Mfr. Part No.
B12A09005L310100

Mouser Part No
256-B12A09005L310100

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 90C switch temp.

Learn More

Datasheet

408In Stock

500Expected 21/08/2026

$5.97

$5.04

$4.68

$4.25

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 140C switch temp.

B12A14005L310100U186
Microtherm Sentronic
1: $6.21
721In Stock

Mfr. Part No.
B12A14005L310100U186

Mouser Part No
256-B2A4005L3000U86

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 140C switch temp.

Learn More

Datasheet

721In Stock

$6.21

$5.23

$4.86

$4.41

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 120C switch temp.

B12A12005L310100U253
Microtherm Sentronic
1: $6.26
964In Stock

Mfr. Part No.
B12A12005L310100U253

Mouser Part No
256-B2A2005L3000U253

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 120C switch temp.

Learn More

Datasheet

964In Stock

$6.26

$5.28

$4.90

$4.45

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 125C switch temp.

B12A12505L310100U112
Microtherm Sentronic
1: $6.15
926In Stock

Mfr. Part No.
B12A12505L310100U112

Mouser Part No
256-B2A2505L3000U2

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 125C switch temp.

Learn More

Datasheet

926In Stock

$6.15

$5.18

$4.81

$4.37

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 155C switch temp.

B12A15505 L370100U186
Microtherm Sentronic
1: $8.97
897In Stock

Mfr. Part No.
B12A15505 L370100U186

Mouser Part No
256-B2A5505L3000U86

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 155C switch temp.

Learn More

Datasheet

897In Stock

$8.97

$7.77

$6.27

$5.32

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 155C switch temp.

B12A15505 L370100U253
Microtherm Sentronic
1: $9.04
1,000In Stock

Mfr. Part No.
B12A15505 L370100U253

Mouser Part No
256-B2A5505L3000U253

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 155C switch temp.

Learn More

Datasheet

1,000In Stock

$9.04

$7.83

$6.32

$5.36

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 160C switch temp.

B12A16005 L370100U253
Microtherm Sentronic
1: $6.26
980In Stock

Mfr. Part No.
B12A16005 L370100U253

Mouser Part No
256-B2A6005L3000U253

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 160C switch temp.

Learn More

Datasheet

980In Stock

$6.26

$5.28

$4.90

$4.45

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 160C switch temp.

B12A16005 L370100
Microtherm Sentronic
1: $8.61
1,016In Stock

Mfr. Part No.
B12A16005 L370100

Mouser Part No
256-B12A16005L310100

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 160C switch temp.

Learn More

Datasheet

1,016In Stock

$8.61

$7.46

$6.02

$5.10

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 140C switch temp.

B12A14005L310100U253
Microtherm Sentronic
1: $9.05
968In Stock

Mfr. Part No.
B12A14005L310100U253

Mouser Part No
256-B2A4005L3000U253

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 140C switch temp.

Learn More

Datasheet

968In Stock

$9.05

$7.84

$6.33

$5.36

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 160C switch temp.

B12A16005 L370100U186
Microtherm Sentronic
1: $8.97
999In Stock

Mfr. Part No.
B12A16005 L370100U186

Mouser Part No
256-B2A6005L3000UU86

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 160C switch temp.

Learn More

Datasheet

999In Stock

$8.97

$7.77

$6.27

$5.32

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 140C switch temp.

B12A14005L310100U112
Microtherm Sentronic
1: $8.87
901In Stock

Mfr. Part No.
B12A14005L310100U112

Mouser Part No
256-B2A4005L3000U2

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 140C switch temp.

Learn More

Datasheet

901In Stock

$8.87

$7.69

$6.20

$5.26

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 160C switch temp.

B12A16005 L370100U112
Microtherm Sentronic
1: $8.87
979In Stock

Mfr. Part No.
B12A16005 L370100U112

Mouser Part No
256-B2A6005L3000U2

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 160C switch temp.

Learn More

Datasheet

979In Stock

$8.87

$7.69

$6.20

$5.26

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 125C switch temp.

B12A12505L310100U253
Microtherm Sentronic
1: $9.04
993In Stock

Mfr. Part No.
B12A12505L310100U253

Mouser Part No
256-B2A2505L3000U253

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 125C switch temp.

Learn More

Datasheet

993In Stock

$9.04

$7.83

$6.32

$5.36

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 70C switch temp.

B12A07005L310100
Microtherm Sentronic
1: $8.61
5In Stock

Mfr. Part No.
B12A07005L310100

Mouser Part No
256-B12A07005L310100

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 70C switch temp.

Learn More

Datasheet

5In Stock

$8.61

$7.46

$6.02

$5.10

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 155C switch temp.

B12A15505 L370100
Microtherm Sentronic
1: $8.61
100In Stock

Mfr. Part No.
B12A15505 L370100

Mouser Part No
256-B12A15505L310100

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 155C switch temp.

Learn More

Datasheet

100In Stock

$8.61

$7.46

$6.02

$5.10

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 125C switch temp.

B12A12505L310100
Microtherm Sentronic
1: $8.61
95In Stock

Mfr. Part No.
B12A12505L310100

Mouser Part No
256-B12A12505L310100

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 125C switch temp.

Learn More

Datasheet

95In Stock

$8.61

$7.46

$6.02

$5.10

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 140C switch temp.

B12A14005L310100
Microtherm Sentronic
1: $8.62
29In Stock

Mfr. Part No.
B12A14005L310100

Mouser Part No
256-B12A14005L310100

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 140C switch temp.

Learn More

Datasheet

29In Stock

$8.62

$7.47

$6.03

$5.10

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 110C switch temp.

B12A11005L310100
Microtherm Sentronic
1: $5.97
72In Stock

Mfr. Part No.
B12A11005L310100

Mouser Part No
256-B12A11005L310100

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 110C switch temp.

Learn More

Datasheet

72In Stock

$5.97

$5.04

$4.68

$4.25

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 80C switch temp.

B12A08005L310100
Microtherm Sentronic
1: $8.61
7In Stock

Mfr. Part No.
B12A08005L310100

Mouser Part No
256-B12A08005L310100

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 80C switch temp.

Learn More

Datasheet

7In Stock

$8.61

$7.46

$6.02

$5.10

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Open (NO), SPST 90C switch temp.

B12B09005L310100U112
Microtherm Sentronic
1: $8.87
96In Stock

Mfr. Part No.
B12B09005L310100U112

Mouser Part No
256-B2B09005L3000U2

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Open (NO), SPST 90C switch temp.

Learn More

Datasheet

96In Stock

$8.87

$7.69

$6.20

$5.26

View

Min.: 1
Mult.: 1

B12B

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 80C switch temp.

B12A08005L310100U112
Microtherm Sentronic
1: $8.88
38In Stock
1,101On Order

Mfr. Part No.
B12A08005L310100U112

Mouser Part No
256-B2A08005L3000U2

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 80C switch temp.

Learn More

Datasheet

38In Stock

1,101On Order

$8.88

$7.70

$6.21

$5.26

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Open (NO), SPST 95C switch temp.

B12B09505L310100U112
Microtherm Sentronic
1: $8.87
95In Stock

Mfr. Part No.
B12B09505L310100U112

Mouser Part No
256-B2B09505L3000U2

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Open (NO), SPST 95C switch temp.

Learn More

Datasheet

95In Stock

$8.87

$7.69

$6.20

$5.26

View

Min.: 1
Mult.: 1

B12B

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 180C switch temp.

B12A18005 L370100
Microtherm Sentronic
1: $5.97
1,035In Stock

Mfr. Part No.
B12A18005 L370100

Mouser Part No
256-B12A18005L310100

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 180C switch temp.

Learn More

Datasheet

1,035In Stock

$5.97

$5.04

$4.68

$4.25

View

Min.: 1
Mult.: 1

B12A

Bulk

B Series Bimetal Snap-Action Temperature Switches

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