Thermal Cut-offs – Mouser Singapore

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Packaging
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 155C switch temp. B12A15505 L370100U186 Microtherm Sentronic 1: $12.21 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 about Microtherm Sentronic b temperature switches	Datasheet	897In Stock	$12.21 $10.58 $8.54 $7.24 View $7.04 $5.93 $5.67 $4.87	Min.: 1 Mult.: 1	B12A	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 125C switch temp. B12E12505L310100G714 Microtherm Sentronic 1: $15.15 912In 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 about Microtherm Sentronic b temperature switches	Datasheet	912In Stock	$15.15 $13.12 $10.59 $8.98 View $8.74 $7.37 $7.04 $6.05	Min.: 1 Mult.: 1	B12E	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 125C switch temp. B12A12505L310100U253 Microtherm Sentronic 1: $12.31 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 about Microtherm Sentronic b temperature switches	Datasheet	993In Stock	$12.31 $10.66 $8.61 $7.29 View $7.10 $5.98 $5.71 $4.91	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: $12.31 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 about Microtherm Sentronic b temperature switches	Datasheet	875In Stock	$12.31 $10.66 $8.61 $7.29 View $7.10 $5.98 $5.71 $4.91	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: $12.31 754In 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 about Microtherm Sentronic b temperature switches	Datasheet	754In Stock	$12.31 $10.66 $8.61 $7.29 View $7.10 $5.98 $5.71 $4.91	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: $15.16 747In 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 about Microtherm Sentronic b temperature switches	Datasheet	747In Stock	$15.16 $13.14 $10.61 $8.98 View $8.74 $7.37 $7.04 $6.05	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: $15.16 982In 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 about Microtherm Sentronic b temperature switches	Datasheet	982In Stock	$15.16 $13.14 $10.61 $8.98 View $8.74 $7.37 $7.04 $6.05	Min.: 1 Mult.: 1	B12E	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 140C switch temp. B12A14005L310100 Microtherm Sentronic 1: $11.72 27In 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 about Microtherm Sentronic b temperature switches	Datasheet	27In Stock	$11.72 $10.16 $8.20 $6.94 View $6.76 $5.70 $5.44 $4.68	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: $11.71 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 about Microtherm Sentronic b temperature switches	Datasheet	5In Stock	$11.71 $10.15 $8.19 $6.94 View $6.76 $5.70 $5.44 $4.68	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: $8.12 62In 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 about Microtherm Sentronic b temperature switches	Datasheet	62In Stock	$8.12 $6.85 $6.36 $5.78 View $5.37 $4.99 $4.57 $3.88	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: $11.71 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 about Microtherm Sentronic b temperature switches	Datasheet	95In Stock	$11.71 $10.15 $8.19 $6.94 View $6.76 $5.70 $5.44 $4.68	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: $11.71 5In 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 about Microtherm Sentronic b temperature switches	Datasheet	5In Stock	$11.71 $10.15 $8.19 $6.94 View $6.76 $5.70 $5.44 $4.68	Min.: 1 Mult.: 1	B12A	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 150C switch temp. B12A15005 L370100 Microtherm Sentronic 1: $11.71 100In Stock	Mfr. Part No. B12A15005 L370100 Mouser Part No 256-B12A15005L310100	Microtherm Sentronic	Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 150C switch temp. Learn More about Microtherm Sentronic b temperature switches	Datasheet	100In Stock	$11.71 $10.15 $8.19 $6.94 View $6.76 $5.70 $5.44 $4.68	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: $12.06 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 about Microtherm Sentronic b temperature switches	Datasheet	95In Stock	$12.06 $10.46 $8.43 $7.15 View $6.96 $5.88 $5.62 $4.81	Min.: 1 Mult.: 1	B12B	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Open (NO), SPST 90C switch temp. B12B09005L310100U112 Microtherm Sentronic 1: $12.06 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 about Microtherm Sentronic b temperature switches	Datasheet	96In Stock	$12.06 $10.46 $8.43 $7.15 View $6.96 $5.88 $5.62 $4.81	Min.: 1 Mult.: 1	B12B	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 140C switch temp. B12A14005L310100U186 Microtherm Sentronic 1: $12.20 669In 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 about Microtherm Sentronic b temperature switches	Datasheet	669In Stock	$12.20 $10.57 $8.53 $7.24 View $7.04 $5.93 $5.67 $4.87	Min.: 1 Mult.: 1	B12A	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 150C switch temp. B12A15005 L370100U294 Microtherm Sentronic 1: $12.29 969In Stock	Mfr. Part No. B12A15005 L370100U294 Mouser Part No 256-B2A5005L3000U294	Microtherm Sentronic	Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 150C switch temp. Learn More about Microtherm Sentronic b temperature switches	Datasheet	969In Stock	$12.29 $10.65 $8.60 $7.29 View $7.10 $5.98 $5.71 $4.91	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: $12.29 987In 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 about Microtherm Sentronic b temperature switches	Datasheet	987In Stock	$12.29 $10.65 $8.60 $7.29 View $7.10 $5.98 $5.71 $4.91	Min.: 1 Mult.: 1	B12A	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 110C switch temp. B12A11005L310100U112 Microtherm Sentronic 1: $12.06 90Expected 11/12/2026	Mfr. Part No. B12A11005L310100U112 Mouser Part No 256-B2A005L3000U2	Microtherm Sentronic	Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 110C switch temp. Learn More about Microtherm Sentronic b temperature switches	Datasheet	90Expected 11/12/2026	$12.06 $10.46 $8.43 $7.15 View $6.96 $5.88 $5.62 $4.81	Min.: 1 Mult.: 1	B12A	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 90C switch temp. B12A09005L310100U112 Microtherm Sentronic 1: $12.06 90Expected 11/12/2026	Mfr. Part No. B12A09005L310100U112 Mouser Part No 256-B2A09005L3000U2	Microtherm Sentronic	Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 90C switch temp. Learn More about Microtherm Sentronic b temperature switches	Datasheet	90Expected 11/12/2026	$12.06 $10.46 $8.43 $7.15 View $6.96 $5.88 $5.62 $4.81	Min.: 1 Mult.: 1	B12A	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 80C switch temp. B12E08005L310100G714 Microtherm Sentronic 1: $15.15 96Expected 18/12/2026	Mfr. Part No. B12E08005L310100G714 Mouser Part No 256-B2E08005L3000G74	Microtherm Sentronic	Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 80C switch temp. Learn More about Microtherm Sentronic b temperature switches	Datasheet	96Expected 18/12/2026	$15.15 $13.12 $10.59 $8.98 View $8.74 $7.37 $7.04 $6.05	Min.: 1 Mult.: 1	B12E	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 90C switch temp. B12E09005L310100G714 Microtherm Sentronic 1: $15.15 96Expected 18/12/2026	Mfr. Part No. B12E09005L310100G714 Mouser Part No 256-B2E09005L3000G74	Microtherm Sentronic	Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 90C switch temp. Learn More about Microtherm Sentronic b temperature switches	Datasheet	96Expected 18/12/2026	$15.15 $13.12 $10.59 $8.98 View $8.74 $7.37 $7.04 $6.05	Min.: 1 Mult.: 1	B12E	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 155C switch temp. B12A15505 L370100 Microtherm Sentronic 1: $11.71 50Expected 18/12/2026	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 about Microtherm Sentronic b temperature switches	Datasheet	50Expected 18/12/2026	$11.71 $10.15 $8.19 $6.94 View $6.76 $5.70 $5.44 $4.68	Min.: 1 Mult.: 1	B12A	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 170C switch temp. B12A17005 L370100 Microtherm Sentronic 1: $11.71 90Expected 20/11/2026	Mfr. Part No. B12A17005 L370100 Mouser Part No 256-B12A17005L310100	Microtherm Sentronic	Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 170C switch temp. Learn More about Microtherm Sentronic b temperature switches	Datasheet	90Expected 20/11/2026	$11.71 $10.15 $8.19 $6.94 View $6.76 $5.70 $5.44 $4.68	Min.: 1 Mult.: 1	B12A	Bulk
Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 125C switch temp. B12A12505L310100U294 Microtherm Sentronic 1: $12.31 80On Order	Mfr. Part No. B12A12505L310100U294 Mouser Part No 256-B2A2505L3000U294	Microtherm Sentronic	Thermal Cut-offs Bi-metallic Disc, Thermal Switch, Normally Closed (NC), SPST 125C switch temp. Learn More about Microtherm Sentronic b temperature switches	Datasheet	80On Order	$12.31 $10.66 $8.61 $7.29 View $7.10 $5.98 $5.71 $4.91	Min.: 1 Mult.: 1	B12A	Bulk

B Series Bimetal Snap-Action Temperature Switches

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