Thermal Cut-offs – Mouser United Kingdom

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Mini-Breakers (Thermal Cutoff Devices)

Bourns Mini-Breakers (Thermal Cutoff Devices) feature a low or high current type and overtemperature / overcurrent protection for lithium polymer and prismatic cells. These devices also control abnormal, excessive currents instantaneously. Bourns Mini-Breakers are RoHS compliant and halogen free. The modules provide a robust and complete alternative for the protection of lithium cells in a compact, single-package solution.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Contact Rating	Rated Temperature	Tolerance	Maximum Temperature	Maximum Voltage	Minimum Holding Voltage	Resistance	Maximum Breaking Current	Maximum Leakage Current	Length	Width	Height	Approvals	Series	Packaging
Thermal Cut-offs Super HC TCO 90C w/o projection AC90ABD Bourns 1: £1.19 1,460In Stock	Mfr. Part No. AC90ABD Mouser Part No 652-AC90ABD	Bourns	Thermal Cut-offs Super HC TCO 90C w/o projection Learn More about Bourns ac tco devices	Datasheet	1,460In Stock	£1.19 £1.13 £1.07 £1.02 View £0.978 £0.834 £0.748	Min.: 1 Mult.: 1	35 A	+ 90 C	+/- 5 C	+ 90 C	28 VDC/35 A/100 cycles	3.5 V	2 mOhms	60 A	200 mA	6.95 mm	3.95 mm	1.1 mm	UL, cUL, TUV	AC	Bulk
Thermal Cut-offs HC TCO 85C BL-51 SA85SB0 Bourns 1: £0.698 8,987In Stock	Mfr. Part No. SA85SB0 Mouser Part No 652-SA85SB0	Bourns	Thermal Cut-offs HC TCO 85C BL-51 Learn More about Bourns sa smt breaker	Datasheet	8,987In Stock	Cut Tape £0.698 £0.657 £0.615 £0.588 View Reel £0.378 £0.561 £0.54 £0.47 £0.438 £0.378 MouseReel Available	Min.: 1 Mult.: 1 : 5,000		+ 85 C	+/- 5 C	+ 85 C	28 VDC/25 A/100 cycles	3 V	7 mOhms	60 A	200 mA	5.4 mm	3.2 mm	1.17 mm	UL, cUL, TUV	SA	Reel, Cut Tape, MouseReel
Thermal Cut-offs 72C Low Profile SMD HC TCO SC72AAB Bourns 1: £0.684 4,902In Stock	Mfr. Part No. SC72AAB Mouser Part No 652-SC72AAB	Bourns	Thermal Cut-offs 72C Low Profile SMD HC TCO Learn More about Bourns sc mini breakers	Datasheet	4,902In Stock	Cut Tape £0.684 £0.644 £0.603 £0.576 View Reel £0.379 £0.55 £0.527 £0.444 £0.42 £0.379 MouseReel Available	Min.: 1 Mult.: 1 : 5,000		+ 72 C	+/- 5 C	+ 72 C	28 VDC/25 A/100 cycles	3 V	5 mOhms	50 A	200 mA	4.4 mm	2.8 mm	0.94 mm	UL, cUL, TUV	SC	Reel, Cut Tape, MouseReel
Thermal Cut-offs 82C Low Profile SMD HC TCO SC82AAB Bourns 1: £0.684 6,516In Stock	Mfr. Part No. SC82AAB Mouser Part No 652-SC82AAB	Bourns	Thermal Cut-offs 82C Low Profile SMD HC TCO Learn More about Bourns sc mini breakers	Datasheet	6,516In Stock	Cut Tape £0.684 £0.644 £0.603 £0.575 View Reel £0.446 £0.55 £0.49 £0.451 £0.446 MouseReel Available	Min.: 1 Mult.: 1 : 5,000		+ 82 C	+/- 5 C	+ 82 C	28 VDC/25 A/100 cycles	3 V	5 mOhms	50 A	200 mA	4.4 mm	2.8 mm	0.94 mm	UL, cUL, TUV	SC	Reel, Cut Tape, MouseReel
Thermal Cut-offs TRIP TEMP 90C 5C TOL HC90AY-1 Bourns 1: £0.952 3,108In Stock	Mfr. Part No. HC90AY-1 Mouser Part No 652-HC90AY-1	Bourns	Thermal Cut-offs TRIP TEMP 90C 5C TOL Learn More about Bourns hc series breakers	Datasheet	3,108In Stock	£0.952 £0.934 £0.89 £0.856 View £0.818 £0.803 £0.689 £0.621 £0.566	Min.: 1 Mult.: 1		+ 90 C	+/- 5 C		28 VDC/25 A/100 cycles	3 VDC	5 mOhms	80 A	200 mA	5.8 mm	3.75 mm	1.15 mm	UL, cUL, TUV	HC	Bulk
Thermal Cut-offs TRIP TEMP 77C 5C TOL LC77AY-1 Bourns 1: £0.818 7,547In Stock	Mfr. Part No. LC77AY-1 Mouser Part No 652-LC77AY-1	Bourns	Thermal Cut-offs TRIP TEMP 77C 5C TOL Learn More about Bourns lc series mini breakers	Datasheet	7,547In Stock	£0.818 £0.773 £0.723 £0.69 View £0.662 £0.647 £0.558 £0.494 £0.431	Min.: 1 Mult.: 1	12 A	+ 77 C	+/- 5 C	+ 77 C	28 VDC/5 A/100 cycles	2 V	10 mOhms	40 A	150 mA	5.8 mm	3.75 mm	1.15 mm	UL, cUL, TUV	LC	Bulk
Thermal Cut-offs HC TCO 77C BL-51 SA77SB0 Bourns 1: £0.698 23,105In Stock	Mfr. Part No. SA77SB0 Mouser Part No 652-SA77SB0	Bourns	Thermal Cut-offs HC TCO 77C BL-51 Learn More about Bourns sa smt breaker	Datasheet	23,105In Stock	Cut Tape £0.698 £0.657 £0.615 £0.588 View Reel £0.378 £0.561 £0.54 £0.476 £0.438 £0.378 MouseReel Available	Min.: 1 Mult.: 1 : 5,000		+ 77 C	+/- 5 C	+ 77 C	28 VDC/25 A/100 cycles	3 V	7 mOhms	60 A	200 mA	5.4 mm	3.2 mm	1.17 mm	UL, cUL, TUV	SA	Reel, Cut Tape, MouseReel
Thermal Cut-offs 72C Reinforced Cover SMD HC TCO SC72AAA Bourns 1: £0.676 4,469In Stock	Mfr. Part No. SC72AAA Mouser Part No 652-SC72AAA	Bourns	Thermal Cut-offs 72C Reinforced Cover SMD HC TCO Learn More about Bourns sc mini breakers	Datasheet	4,469In Stock	Cut Tape £0.676 £0.641 £0.62 £0.596 View Reel £0.501 £0.576 £0.575 £0.549 £0.539 £0.501 MouseReel Available	Min.: 1 Mult.: 1 : 5,000		+ 72 C	+/- 5 C	+ 72 C	28 VDC/25 A/100 cycles	3 V	5 mOhms	50 A	200 mA	4.4 mm	2.8 mm	0.94 mm	UL, cUL, TUV	SC	Reel, Cut Tape, MouseReel
Thermal Cut-offs TRIP TEMP 72C 5C TOL LC72AY-1 Bourns 1: £0.78 2,301In Stock	Mfr. Part No. LC72AY-1 Mouser Part No 652-LC72AY-1	Bourns	Thermal Cut-offs TRIP TEMP 72C 5C TOL Learn More about Bourns lc series mini breakers	Datasheet	2,301In Stock	£0.78 £0.738 £0.692 £0.646 View £0.566 £0.547 £0.512 £0.443	Min.: 1 Mult.: 1	12 A	+ 72 C	+/- 5 C		28 VDC/5 A/100 cycles	2 VDC	10 mOhms	40 A	150 mA	5.8 mm	3.75 mm	1.15 mm	UL, cUL, TUV	LC	Bulk
Thermal Cut-offs 77C Low Profile SMD HC TCO SC77AAB Bourns 1: £0.713 9,540In Stock	Mfr. Part No. SC77AAB Mouser Part No 652-SC77AAB	Bourns	Thermal Cut-offs 77C Low Profile SMD HC TCO Learn More about Bourns sc mini breakers	Datasheet	9,540In Stock	Cut Tape £0.713 £0.674 £0.632 £0.603 View Reel £0.40 £0.525 £0.52 £0.473 £0.432 £0.40 MouseReel Available	Min.: 1 Mult.: 1 : 5,000		+ 77 C	+/- 5 C	+ 77 C	28 VDC/25 A/100 cycles	3 V	5 mOhms	50 A	200 mA	4.4 mm	2.8 mm	0.94 mm	UL, cUL, TUV	SC	Reel, Cut Tape, MouseReel
Thermal Cut-offs Trip Temp 72c 5c TOL NR72AB0 Bourns 1: £0.995 3,011In Stock	Mfr. Part No. NR72AB0 Mouser Part No 652-NR72AB0	Bourns	Thermal Cut-offs Trip Temp 72c 5c TOL Learn More about Bourns komatsulite nr c	Datasheet	3,011In Stock	£0.995 £0.969 £0.943 £0.917 View £0.882 £0.743 £0.684	Min.: 1 Mult.: 1	25 A	+ 72 C	+/- 5 C	+ 72 C	28 VDC/25 A/100 cycles	2 V	5 mOhms	60 A	200 mA	4.8 mm	2.8 mm	0.89 mm	UL, cUL, TUV	NR-A	Bulk
Thermal Cut-offs TRIP TEMP 82C 5C TOL LC82AY-1 Bourns 1: £0.78 1,813In Stock	Mfr. Part No. LC82AY-1 Mouser Part No 652-LC82AY-1	Bourns	Thermal Cut-offs TRIP TEMP 82C 5C TOL Learn More about Bourns lc series mini breakers	Datasheet	1,813In Stock	£0.78 £0.738 £0.692 £0.661 View £0.632 £0.615 £0.53 £0.485 £0.483	Min.: 1 Mult.: 1	12 A	+ 82 C	+/- 5 C	+ 82 C	28 VDC/5 A/100 cycles	2 V	10 mOhms	40 A	150 mA	5.8 mm	3.75 mm	1.15 mm	UL, cUL, TUV	LC	Bulk
Thermal Cut-offs Trip Temp 72c 5c TOL NR72CB0 Bourns 1: £0.934 4,427In Stock	Mfr. Part No. NR72CB0 Mouser Part No 652-NR72CB0	Bourns	Thermal Cut-offs Trip Temp 72c 5c TOL Learn More about Bourns komatsulite nr c	Datasheet	4,427In Stock	£0.934 £0.65 £0.643 £0.615	Min.: 1 Mult.: 1	12 A	+ 72 C	+/- 5 C	+ 72 C	28 VDC/12 A/100 cycles	2 V	15 mOhms	30 A	150 mA	4.8 mm	2.8 mm	0.89 mm	UL, cUL, TUV	NR-C	Bulk
Thermal Cut-offs TRIP TEMP 77C 5C TOL HC77AY-1 Bourns 1: £1.19 3,142In Stock	Mfr. Part No. HC77AY-1 Mouser Part No 652-HC77AY-1	Bourns	Thermal Cut-offs TRIP TEMP 77C 5C TOL Learn More about Bourns hc series breakers	Datasheet	3,142In Stock	£1.19 £1.09 £0.908 £0.834 View £0.749 £0.689 £0.601 £0.566	Min.: 1 Mult.: 1		+ 77 C	+/- 5 C		28 VDC/25 A/100 cycles	3 VDC	5 mOhms	80 A	200 mA	5.8 mm	3.75 mm	1.15 mm	UL, cUL, TUV	HC	Bulk
Thermal Cut-offs Trip Temp 85c 5c TOL NR85AB0 Bourns 1: £1.15 9,996In Stock	Mfr. Part No. NR85AB0 Mouser Part No 652-NR85AB0	Bourns	Thermal Cut-offs Trip Temp 85c 5c TOL Learn More about Bourns komatsulite nr c	Datasheet	9,996In Stock	£1.15 £1.10 £1.03 £0.986 View £0.899 £0.882 £0.743 £0.684 £0.656	Min.: 1 Mult.: 1	25 A	+ 85 C	+/- 5 C	+ 85 C	28 VDC/25 A/100 cycles	2 V	5 mOhms	60 A	200 mA	4.8 mm	2.8 mm	0.89 mm	UL, cUL, TUV	NR-A	Bulk
Thermal Cut-offs HC TCO 82C BL-51 SA82SB0 Bourns 1: £0.698 4,605In Stock	Mfr. Part No. SA82SB0 Mouser Part No 652-SA82SB0	Bourns	Thermal Cut-offs HC TCO 82C BL-51 Learn More about Bourns sa smt breaker	Datasheet	4,605In Stock	Cut Tape £0.698 £0.657 £0.616 £0.588 View Reel £0.411 £0.562 £0.54 £0.476 £0.438 £0.411 MouseReel Available	Min.: 1 Mult.: 1 : 5,000		+ 82 C	+/- 5 C	+ 82 C	28 VDC/25 A/100 cycles	3 V	7 mOhms	60 A	200 mA	5.4 mm	3.2 mm	1.17 mm	UL, cUL, TUV	SA	Reel, Cut Tape, MouseReel
Thermal Cut-offs 77C Reinforced Cover SMD HC TCO SC77AAA Bourns 1: £0.863 2,589In Stock	Mfr. Part No. SC77AAA Mouser Part No 652-SC77AAA	Bourns	Thermal Cut-offs 77C Reinforced Cover SMD HC TCO Learn More about Bourns sc mini breakers	Datasheet	2,589In Stock	Cut Tape £0.863 £0.826 £0.773 £0.737 View Reel £0.551 £0.705 £0.695 £0.598 £0.552 £0.551 MouseReel Available	Min.: 1 Mult.: 1 : 5,000		+ 77 C	+/- 5 C	+ 77 C	28 VDC/25 A/100 cycles	3 V	5 mOhms	50 A	200 mA	4.4 mm	2.8 mm	1.07 mm	UL, cUL, TUV	SC	Reel, Cut Tape, MouseReel
Thermal Cut-offs 85C Reinforced Cover SMD HC TCO SC85AAA Bourns 1: £0.863 3,500In Stock	Mfr. Part No. SC85AAA Mouser Part No 652-SC85AAA	Bourns	Thermal Cut-offs 85C Reinforced Cover SMD HC TCO Learn More about Bourns sc mini breakers	Datasheet	3,500In Stock	Cut Tape £0.863 £0.826 £0.773 £0.737 View Reel £0.509 £0.705 £0.695 £0.598 £0.552 £0.509 MouseReel Available	Min.: 1 Mult.: 1 : 5,000		+ 85 C	+/- 5 C	+ 85 C	28 VDC/25 A/100 cycles	3 V	5 mOhms	50 A	200 mA	4.4 mm	2.8 mm	1.07 mm	UL, cUL, TUV	SC	Reel, Cut Tape, MouseReel
Thermal Cut-offs 85C Low Profile SMD HC TCO SC85AAB Bourns 1: £0.759 12,426In Stock	Mfr. Part No. SC85AAB Mouser Part No 652-SC85AAB	Bourns	Thermal Cut-offs 85C Low Profile SMD HC TCO Learn More about Bourns sc mini breakers	Datasheet	12,426In Stock	Cut Tape £0.759 £0.715 £0.67 £0.609 View Reel £0.407 £0.551 £0.533 £0.444 £0.42 £0.407 MouseReel Available	Min.: 1 Mult.: 1 : 5,000		+ 85 C	+/- 5 C	+ 85 C	28 VDC/25 A/100 cycles	3 V	5 mOhms	50 A	200 mA	4.4 mm	2.8 mm	0.94 mm	UL, cUL, TUV	SC	Reel, Cut Tape, MouseReel
Thermal Cut-offs Super HC TCO 77C w/o projection AC77ABD Bourns 1: £1.25 291In Stock	Mfr. Part No. AC77ABD Mouser Part No 652-AC77ABD	Bourns	Thermal Cut-offs Super HC TCO 77C w/o projection Learn More about Bourns ac tco devices	Datasheet	291In Stock	£1.25 £1.19 £1.12 £1.07 View £1.02 £0.89 £0.856 £0.751	Min.: 1 Mult.: 1	35 A	+ 77 C	+/- 5 C	+ 77 C	28 VDC/35 A/100 cycles	3.5 V	2 mOhms	60 A	200 mA	6.95 mm	3.95 mm	1.1 mm	UL, cUL, TUV	AC	Bulk
Thermal Cut-offs HC TCO 72C BL-51 SA72SB0 Bourns 1: £0.698 943In Stock 10,000Expected 02/12/2026	Mfr. Part No. SA72SB0 Mouser Part No 652-SA72SB0	Bourns	Thermal Cut-offs HC TCO 72C BL-51 Learn More about Bourns sa smt breaker	Datasheet	943In Stock 10,000Expected 02/12/2026	Cut Tape £0.698 £0.652 £0.616 £0.581 View Reel £0.395 £0.513 £0.487 £0.476 £0.43 £0.395 MouseReel Available	Min.: 1 Mult.: 1 : 5,000		+ 72 C	+/- 5 C	+ 72 C	28 VDC/25 A/100 cycles	3 V	7 mOhms	60 A	200 mA	5.4 mm	3.2 mm	1.17 mm	UL, cUL, TUV	SA	Reel, Cut Tape, MouseReel
Thermal Cut-offs TRIP TEMP 72C 5C TOL HC72AY-1 Bourns 1: £1.06 57In Stock	Mfr. Part No. HC72AY-1 Mouser Part No 652-HC72AY-1	Bourns	Thermal Cut-offs TRIP TEMP 72C 5C TOL Learn More about Bourns hc series breakers	Datasheet	57In Stock	£1.06 £1.00 £0.943 £0.908 View £0.849 £0.834 £0.732 £0.69 £0.616	Min.: 1 Mult.: 1		+ 72 C	+/- 5 C	+ 72 C	28 VDC/25 A/100 cycles	3 V	5 mOhms	80 A	200 mA	5.8 mm	3.75 mm	1.15 mm	UL, cUL, TUV	HC	Bulk
Thermal Cut-offs Trip Temp 85c 5c TOL NR85CB0 Bourns 1: £1.12 395In Stock	Mfr. Part No. NR85CB0 Mouser Part No 652-NR85CB0	Bourns	Thermal Cut-offs Trip Temp 85c 5c TOL Learn More about Bourns komatsulite nr c	Datasheet	395In Stock	£1.12 £1.07 £0.995 £0.89 View £0.78 £0.661 £0.622 £0.539	Min.: 1 Mult.: 1	12 A	+ 85 C	+/- 5 C	+ 85 C	28 VDC/12 A/100 cycles	2 V	15 mOhms	30 A	150 mA	4.8 mm	2.8 mm	0.89 mm	UL, cUL, TUV	NR-C	Bulk
Thermal Cut-offs Super HC TCO 77C w/o projection AC72ABD Bourns 3,000: £0.863 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. AC72ABD Mouser Part No 652-AC72ABD	Bourns	Thermal Cut-offs Super HC TCO 77C w/o projection Learn More about Bourns ac tco devices	Datasheet	Non-Stocked Lead-Time 8 Weeks	£0.863	Min.: 3,000 Mult.: 3,000	35 A	+ 72 C	+/- 5 C		28 VDC/35 A/100 cycles	3.5 VDC	2 mOhms	60 A	200 mA	6.95 mm	3.95 mm	1.1 mm	UL, cUL, TUV	AC	Bulk
Thermal Cut-offs Super HC TCO 82C w/o projection AC82ABD Bourns 3,000: £0.773 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. AC82ABD Mouser Part No 652-AC82ABD	Bourns	Thermal Cut-offs Super HC TCO 82C w/o projection Learn More about Bourns ac tco devices	Datasheet	Non-Stocked Lead-Time 8 Weeks	£0.773	Min.: 3,000 Mult.: 3,000	35 A	+ 82 C	+/- 5 C		28 VDC/35 A/100 cycles	3.5 VDC	2 mOhms	60 A	200 mA	6.95 mm	3.95 mm	1.1 mm	UL, cUL, TUV	AC	Bulk

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