Thermal Cut-offs – Mouser South Africa

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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 150C switch temp.

B12A15005 L370100U186
Microtherm Sentronic
1: $8.97
1,004In Stock

Mfr. Part No.
B12A15005 L370100U186

Mouser Part No
256-B2A5005L3000UU86

Microtherm Sentronic

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

Learn More

Datasheet

1,004In Stock

$8.97

$7.77

$6.27

$5.33

View

Min.: 1
Mult.: 1

B12A

Bulk

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

B12A15505 L370100U186B245
Microtherm Sentronic
1: $9.90
997In Stock

Mfr. Part No.
B12A15505 L370100U186B245

Mouser Part No
256-B2A5505L3000B245

Microtherm Sentronic

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

Learn More

Datasheet

997In Stock

$9.90

$8.57

$6.92

$5.86

View

Min.: 1
Mult.: 1

B12A

Bulk

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

B12A15505 L370100U112
Microtherm Sentronic
1: $8.87
999In Stock

Mfr. Part No.
B12A15505 L370100U112

Mouser Part No
256-B2A5505L3000U2

Microtherm Sentronic

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

Learn More

Datasheet

999In 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 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

$6.33

$5.36

View

Min.: 1
Mult.: 1

B12A

Bulk

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

B12A15505 L370100U294
Microtherm Sentronic
1: $9.04
1,001In Stock

Mfr. Part No.
B12A15505 L370100U294

Mouser Part No
256-B2A5505L3000U294

Microtherm Sentronic

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

Learn More

Datasheet

1,001In Stock

$9.04

$7.83

$6.33

$5.36

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

$5.33

View

Min.: 1
Mult.: 1

B12A

Bulk

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

B12A16005 L370100U186B245
Microtherm Sentronic
1: $9.90
1,007In Stock

Mfr. Part No.
B12A16005 L370100U186B245

Mouser Part No
256-B2A6005L3000B245

Microtherm Sentronic

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

Learn More

Datasheet

1,007In Stock

$9.90

$8.57

$6.92

$5.86

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 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 L370100U294
Microtherm Sentronic
1: $9.04
1,007In Stock

Mfr. Part No.
B12A16005 L370100U294

Mouser Part No
256-B2A6005L3000U294

Microtherm Sentronic

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

Learn More

Datasheet

1,007In Stock

$9.04

$7.83

$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
1,000In 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

1,000In Stock

$8.97

$7.77

$6.27

$5.33

View

Min.: 1
Mult.: 1

B12A

Bulk

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

B12A07005L310100U253
Microtherm Sentronic
1: $9.04
875In Stock

Mfr. Part No.
B12A07005L310100U253

Mouser Part No
256-B2A75L3U253

Microtherm Sentronic

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

Learn More

Datasheet

875In Stock

$9.04

$7.83

$6.33

$5.36

View

Min.: 1
Mult.: 1

B12A

Bulk

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

B12A07005L310100U294
Microtherm Sentronic
1: $6.26
776In Stock

Mfr. Part No.
B12A07005L310100U294

Mouser Part No
256-B2A75L3U294

Microtherm Sentronic

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

Learn More

Datasheet

776In 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 70C switch temp.

B12E07005L310100G714
Microtherm Sentronic
1: $7.44
761In Stock

Mfr. Part No.
B12E07005L310100G714

Mouser Part No
256-B2E07005L3000G74

Microtherm Sentronic

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

Learn More

Datasheet

761In Stock

$7.44

$6.27

$5.83

$5.29

View

Min.: 1
Mult.: 1

B12E

Bulk

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

B12E12505L310100G714
Microtherm Sentronic
1: $11.14
932In Stock

Mfr. Part No.
B12E12505L310100G714

Mouser Part No
256-B2E2505L3000G74

Microtherm Sentronic

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

Learn More

Datasheet

932In Stock

$11.14

$9.65

$7.79

$6.61

View

Min.: 1
Mult.: 1

B12E

Bulk

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

B12E14005L310100G714
Microtherm Sentronic
1: $11.14
1,010In Stock

Mfr. Part No.
B12E14005L310100G714

Mouser Part No
256-B2E4005L3000G74

Microtherm Sentronic

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

Learn More

Datasheet

1,010In Stock

$11.14

$9.65

$7.79

$6.61

View

Min.: 1
Mult.: 1

B12E

Bulk

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

B12E15005 L370100G714
Microtherm Sentronic
1: $7.44
983In Stock

Mfr. Part No.
B12E15005 L370100G714

Mouser Part No
256-B2E5005L3000G74

Microtherm Sentronic

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

Learn More

Datasheet

983In Stock

$7.44

$6.27

$5.83

$5.29

View

Min.: 1
Mult.: 1

B12E

Bulk

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

B12E15505 L370100G714
Microtherm Sentronic
1: $11.14
999In Stock

Mfr. Part No.
B12E15505 L370100G714

Mouser Part No
256-B2E5505L3000G74

Microtherm Sentronic

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

Learn More

Datasheet

999In Stock

$11.14

$9.65

$7.79

$6.61

View

Min.: 1
Mult.: 1

B12E

Bulk

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

B12E16005 L370100G714
Microtherm Sentronic
1: $11.14
1,000In Stock

Mfr. Part No.
B12E16005 L370100G714

Mouser Part No
256-B2E6005L3000G74

Microtherm Sentronic

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

Learn More

Datasheet

1,000In Stock

$11.14

$9.65

$7.79

$6.61

View

Min.: 1
Mult.: 1

B12E

Bulk

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

B12A14005L310100U112
Microtherm Sentronic
1: $8.87
961In 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

961In 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 Open (NO), SPST 90C switch temp.

B12B09005L310100U112
Microtherm Sentronic
1: $8.87
96Expected 2026/03/27

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

96Expected 2026/03/27

$8.87

$7.69

$6.20

$5.26

View

Min.: 1
Mult.: 1

B12B

Bulk

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

B12B09505L310100U112
Microtherm Sentronic
1: $8.87
96Expected 2026/03/27

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

96Expected 2026/03/27

$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 95C switch temp.

B12A09505L310100
Microtherm Sentronic
1: $8.61
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
B12A09505L310100

Mouser Part No
256-B12A09505L310100

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 95C switch temp.

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$8.61

$7.47

$6.02

$5.11

View

Min.: 1
Mult.: 1

B12A

Bulk

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 100C switch temp.

B12A10005L310100
Microtherm Sentronic
1: $8.61
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
B12A10005L310100

Mouser Part No
256-B12A10005L310100

Microtherm Sentronic

Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 100C switch temp.

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$8.61

$7.47

$6.02

$5.11

View

Min.: 1
Mult.: 1

B12A

Bulk

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

B12A12005L310100
Microtherm Sentronic
1: $8.61
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
B12A12005L310100

Mouser Part No
256-B12A12005L310100

Microtherm Sentronic

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

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$8.61

$7.47

$6.02

$5.11

View

Min.: 1
Mult.: 1

B12A

Bulk

B Series Bimetal Snap-Action Temperature Switches

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