Circuit Protection – Mouser Canada

.hide-partial { max-height: none; } .show-more { display: none; }

Circuit Protection Devices

Bourns manufactures and supplies a wide range of circuit protection technologies, including fuses, PTC thermistors, varistors, GDTs, resettable thermal cut-offs, surge protection devices, hybrid protectors, discrete semiconductor solutions, and more. Reliable surge protection is a critical design consideration to help ensure operational reliability of consumer electronics, industrial/communication equipment, automotive, battery charging, energy storage infrastructure, and renewable energy harvesting ecosystems.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Circuit Protection

List Images

Results: 8,097

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Varistors IsoMOV 3KA 300Vrms Bulk In-Line

IsoM3-300-B-L2
Bourns
1: $1.98
3,265In Stock

Mfr. Part #
IsoM3-300-B-L2

Mouser Part #
652-ISOM3-300-B-L2

Bourns

Varistors IsoMOV 3KA 300Vrms Bulk In-Line

Learn More

Datasheet

3,265In Stock

$1.98

$1.44

$1.31

$1.16

View

Min.: 1
Mult.: 1

Varistors IsoMOV 5KA 420Vrms Bulk In-Line

IsoM5-420-B-L2
Bourns
1: $3.90
5,080In Stock

Mfr. Part #
IsoM5-420-B-L2

Mouser Part #
652-ISOM5-420-B-L2

Bourns

Varistors IsoMOV 5KA 420Vrms Bulk In-Line

Learn More

Datasheet

5,080In Stock

$3.90

$2.46

$2.09

$1.66

View

Min.: 1
Mult.: 1

Varistors IsoMOV 5KA 510Vrms Reel In-Line

IsoM5-510-R-L2
Bourns
1: $2.38
3,412In Stock

Mfr. Part #
IsoM5-510-R-L2

Mouser Part #
652-ISOM5-510-R-L2

Bourns

Varistors IsoMOV 5KA 510Vrms Reel In-Line

Learn More

Datasheet

3,412In Stock

Cut Tape

$2.38

$1.73

$1.58

$1.40

Reel

$1.30

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 300

Resettable Fuses - PPTC 6V 3.0A-HD 40A MAX

MF-LSMF300X-2
Bourns
1: $1.38
7,626In Stock

Mfr. Part #
MF-LSMF300X-2

Mouser Part #
652-MF-LSMF300X-2

Bourns

Resettable Fuses - PPTC 6V 3.0A-HD 40A MAX

Learn More

Datasheet

7,626In Stock

Cut Tape

$1.38

$1.26

$1.05

$0.97

View

Reel

$0.614

MouseReel Available

Min.: 1
Mult.: 1

Reel: 6,000

Resettable Fuses - PPTC 60V .5A-HD 40A MAX

MF-R050-2
Bourns
1: $0.798
11,931In Stock

Mfr. Part #
MF-R050-2

Mouser Part #
652-MF-R050-2

Bourns

Resettable Fuses - PPTC 60V .5A-HD 40A MAX

Learn More

Datasheet

11,931In Stock

Cut Tape

$0.798

$0.631

$0.591

$0.447

View

Reel

$0.344

Min.: 1
Mult.: 1

Reel: 3,000

Resettable Fuses - PPTC PTC RESETTABLE 2.5A 30V RADIAL LEADED

MF-R250-0-14
Bourns
1: $0.998
7,904In Stock

Mfr. Part #
MF-R250-0-14

Mouser Part #
652-MF-R250-0-14

Bourns

Resettable Fuses - PPTC PTC RESETTABLE 2.5A 30V RADIAL LEADED

Learn More

Datasheet

7,904In Stock

$0.998

$0.757

$0.709

$0.536

View

Min.: 1
Mult.: 1

Resettable Fuses - PPTC 30V 2.5A-HD 40A MAX

MF-R250-2
Bourns
1: $0.982
8,143In Stock

Mfr. Part #
MF-R250-2

Mouser Part #
652-MF-R250-2

Bourns

Resettable Fuses - PPTC 30V 2.5A-HD 40A MAX

Learn More

Datasheet

8,143In Stock

Cut Tape

$0.982

$0.755

$0.708

$0.534

Reel

$0.388

View

Min.: 1
Mult.: 1

Reel: 3,000

Resettable Fuses - PPTC PTC 2.0A 16V RADIAL LEADED HI-TEMP

MF-RHT200-2
Bourns
1: $1.15
11,614In Stock

Mfr. Part #
MF-RHT200-2

Mouser Part #
652-MF-RHT200-2

Bourns

Resettable Fuses - PPTC PTC 2.0A 16V RADIAL LEADED HI-TEMP

Learn More

Datasheet

11,614In Stock

Cut Tape

$1.15

$0.883

$0.827

$0.625

Reel

$0.454

View

Min.: 1
Mult.: 1

Reel: 3,000

Resettable Fuses - PPTC 72V 1.6A-HD 40A MAX

MF-RX160/72-0
Bourns
1: $0.522
12,865In Stock

Mfr. Part #
MF-RX160/72-0

Mouser Part #
652-MF-RX160/72-0

Bourns

Resettable Fuses - PPTC 72V 1.6A-HD 40A MAX

Learn More

Datasheet

12,865In Stock

$0.522

$0.482

$0.431

$0.418

View

Min.: 1
Mult.: 1

Resettable Fuses - PPTC 60V 300MA-HD 10A MAX

MF-SMDF030-2
Bourns
1: $0.829
59,341In Stock

Mfr. Part #
MF-SMDF030-2

Mouser Part #
652-MF-SMDF030-2

Bourns

Resettable Fuses - PPTC 60V 300MA-HD 10A MAX

Learn More

Datasheet

59,341In Stock

Cut Tape

$0.829

$0.631

$0.591

$0.447

View

Reel

$0.284

MouseReel Available

Min.: 1
Mult.: 1

Reel: 6,000

Varistors PV 300V 10%

PV300K3225R2
Bourns
1: $0.89
9,751In Stock

Mfr. Part #
PV300K3225R2

Mouser Part #
652-PV300K3225R2

Bourns

Varistors PV 300V 10%

Learn More

Datasheet

9,751In Stock

Cut Tape

$0.89

$0.559

$0.487

$0.453

Reel

$0.413

View

Min.: 1
Mult.: 1

Reel: 1,000

Thermal Cutoffs 77C Low Profile SMD HC TCO

SC77AAB
Bourns
1: $1.63
9,556In Stock

Mfr. Part #
SC77AAB

Mouser Part #
652-SC77AAB

Bourns

Thermal Cutoffs 77C Low Profile SMD HC TCO

Learn More

Datasheet

9,556In Stock

Cut Tape

$1.63

$1.49

$1.24

$0.88

$0.737

Reel

$0.691

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

Surface Mount Fuses 0.5A Fast Acting 0402 SinglFuse

SF-0402F050-2
Bourns
1: $0.752
15,075In Stock

Mfr. Part #
SF-0402F050-2

Mouser Part #
652-SF-0402F050-2

Bourns

Surface Mount Fuses 0.5A Fast Acting 0402 SinglFuse

Learn More

Datasheet

15,075In Stock

Cut Tape

$0.752

$0.562

$0.48

$0.421

View

Reel

$0.362

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

Surface Mount Fuses 0.4A Fast Acting 0603 Singlfuse

SF-0603F040-2
Bourns
1: $0.936
6,946In Stock

Mfr. Part #
SF-0603F040-2

Mouser Part #
652-SF-0603F040-2

Bourns

Surface Mount Fuses 0.4A Fast Acting 0603 Singlfuse

Learn More

Datasheet

6,946In Stock

Cut Tape

$0.936

$0.781

$0.659

$0.548

View

Reel

$0.345

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

Surface Mount Fuses 3A Fast Acting 0603 SinglFuse

SF-0603F300-2
Bourns
1: $0.706
9,051In Stock

Mfr. Part #
SF-0603F300-2

Mouser Part #
652-SF-0603F300-2

Bourns

Surface Mount Fuses 3A Fast Acting 0603 SinglFuse

Learn More

Datasheet

9,051In Stock

Cut Tape

$0.706

$0.631

$0.573

$0.514

View

Reel

$0.345

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

Surface Mount Fuses 0.63A Slow Blow 0603 SinglFuse

SF-0603S063-2
Bourns
1: $0.645
8,969In Stock

Mfr. Part #
SF-0603S063-2

Mouser Part #
652-SF-0603S063-2

Bourns

Surface Mount Fuses 0.63A Slow Blow 0603 SinglFuse

Learn More

Datasheet

8,969In Stock

Cut Tape

$0.645

$0.568

$0.467

$0.41

View

Reel

$0.338

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

Surface Mount Fuses 3A Fast Acting 1206 SinglFuse

SF-1206F300-2
Bourns
1: $0.752
9,132In Stock

Mfr. Part #
SF-1206F300-2

Mouser Part #
652-SF-1206F300-2

Bourns

Surface Mount Fuses 3A Fast Acting 1206 SinglFuse

Learn More

Datasheet

9,132In Stock

Cut Tape

$0.752

$0.546

$0.465

$0.419

View

Reel

$0.298

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

Surface Mount Fuses 2A 63V FAST ACTING

SF-1206FP200-2
Bourns
1: $0.844
6,077In Stock

Mfr. Part #
SF-1206FP200-2

Mouser Part #
652-SF-1206FP200-2

Bourns

Surface Mount Fuses 2A 63V FAST ACTING

Learn More

Datasheet

6,077In Stock

Cut Tape

$0.844

$0.746

$0.642

$0.582

View

Reel

$0.355

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

Thyristor Surge Protection Devices - TSPD Sidacs Very Low Volt Bidirectional

TISP4025H1BJR-S
Bourns
1: $1.98
9,422In Stock

Mfr. Part #
TISP4025H1BJR-S

Mouser Part #
652-TISP4025H1BJR-S

Bourns

Thyristor Surge Protection Devices - TSPD Sidacs Very Low Volt Bidirectional

Learn More

Datasheet

9,422In Stock

Cut Tape

$1.98

$1.24

$0.824

$0.648

Reel

$0.513

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

Thyristor Surge Protection Devices - TSPD 58V 600mA

TISP4070M3BJR-S
Bourns
1: $1.78
12,997In Stock

Mfr. Part #
TISP4070M3BJR-S

Mouser Part #
652-TISP4070M3BJR-S

Bourns

Thyristor Surge Protection Devices - TSPD 58V 600mA

Learn More

Datasheet

12,997In Stock

Cut Tape

$1.78

$1.12

$0.735

$0.576

Reel

$0.437

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

Thyristor Surge Protection Devices - TSPD BI-DIRECTIONL PRTCTR 120volts

TISP4145M3BJR-S
Bourns
1: $1.78
8,461In Stock

Mfr. Part #
TISP4145M3BJR-S

Mouser Part #
652-TISP4145M3BJR-S

Bourns

Thyristor Surge Protection Devices - TSPD BI-DIRECTIONL PRTCTR 120volts

Learn More

Datasheet

8,461In Stock

Cut Tape

$1.78

$1.12

$0.735

$0.576

Reel

$0.385

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

Varistors ZV 20V 10%

ZV20K1206201NIR1HT
Bourns
1: $0.307
22,724In Stock

Mfr. Part #
ZV20K1206201NIR1HT

Mouser Part #
652-ZV20K1206201NIRH

Bourns

Varistors ZV 20V 10%

Learn More

Datasheet

22,724In Stock

Cut Tape

$0.307

$0.244

$0.216

$0.212

View

Reel

$0.15

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Varistors 7mm Radial Disc MOV - Kinked Leads, T&R

MOV-07D201KKTR
Bourns
1: $0.553
4,686In Stock

Mfr. Part #
MOV-07D201KKTR

Mouser Part #
652-MOV-07D201KKTR

Bourns

Varistors 7mm Radial Disc MOV - Kinked Leads, T&R

Learn More

Datasheet

4,686In Stock

Cut Tape

$0.553

$0.39

$0.221

$0.183

Reel

$0.101

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

Varistors 7mm Radial Disc MOV - Kinked Leads, T&R

MOV-07D330KKTR
Bourns
1: $0.706
3,069In Stock
2,000Expected 2026-04-07

Mfr. Part #
MOV-07D330KKTR

Mouser Part #
652-MOV-07D330KKTR

Bourns

Varistors 7mm Radial Disc MOV - Kinked Leads, T&R

Learn More

Datasheet

3,069In Stock

2,000Expected 2026-04-07

Cut Tape

$0.706

$0.484

$0.275

$0.227

Reel

$0.127

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

Varistors 7mm Radial Disc MOV - Kinked Leads, T&R

MOV-07D621KKTR
Bourns
1: $0.675
2,937In Stock

Mfr. Part #
MOV-07D621KKTR

Mouser Part #
652-MOV-07D621KKTR

Bourns

Varistors 7mm Radial Disc MOV - Kinked Leads, T&R

Learn More

Datasheet

2,937In Stock

Cut Tape

$0.675

$0.496

$0.281

$0.233

Reel

$0.147

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

Circuit Protection Devices

Types of Circuit Protection

Mouser Electronics®

Company

Resources

Support