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

4 mm Circuit Protection

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

Types of Circuit Protection

List Images

Results: 201

Applied Filters:

Width = 4 mm

Reset All

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 #

Board Mount Surge Protectors 100mA 850Vimp

P850-G120-WH
Bourns
1: CHF 1.89
24’235In Stock

Mfr. Part No.
P850-G120-WH

Mouser Part No
652-P850-G120-WH

Bourns

Board Mount Surge Protectors 100mA 850Vimp

Learn More

Datasheet

Product Comments

24’235In Stock

Cut Tape

CHF 1.89

CHF 1.64

CHF 1.13

CHF 0.92

CHF 0.864

Reel

CHF 0.858

MouseReel Available

Min.: 1
Mult.: 1

: 3’000

Fuses with Leads - Through Hole 12A 350V

0697H9120-05
Bel Fuse
1: CHF 0.388
7’692In Stock

Mfr. Part No.
0697H9120-05

Mouser Part No
530-0697H9120-05

Bel Fuse

Fuses with Leads - Through Hole 12A 350V

Learn More

Datasheet

7’692In Stock

CHF 0.388

CHF 0.353

CHF 0.292

CHF 0.269

View

Min.: 1
Mult.: 1

Fuses with Leads - Through Hole 16A 350V

0697H9160-02
Bel Fuse
1: CHF 0.388
10’127In Stock

Mfr. Part No.
0697H9160-02

Mouser Part No
530-0697H9160-02

Bel Fuse

Fuses with Leads - Through Hole 16A 350V

Learn More

Datasheet

10’127In Stock

CHF 0.388

CHF 0.353

CHF 0.292

CHF 0.27

Reel

CHF 0.192

View

Min.: 1
Mult.: 1

: 1’000

Fuses with Leads - Through Hole 15A 350V

0697H9150-02
Bel Fuse
1: CHF 0.388
8’872In Stock

Mfr. Part No.
0697H9150-02

Mouser Part No
530-0697H9150-02

Bel Fuse

Fuses with Leads - Through Hole 15A 350V

Learn More

Datasheet

8’872In Stock

CHF 0.388

CHF 0.353

CHF 0.292

CHF 0.269

View

Reel

CHF 0.148

Min.: 1
Mult.: 1

: 1’000

NTC (Negative Temperature Coefficient) Thermistors NTC NI 0.5 LEAD 10K SPECIAL TOL blk E3 A

NTCLE203E3103SB0A
Vishay / BC Components
1: CHF 1.39
40In Stock
500Expected 8/18/2026
New Product

Mfr. Part No.
NTCLE203E3103SB0A

Mouser Part No
594-NTCLE23E313SB

New Product

Vishay / BC Components

NTC (Negative Temperature Coefficient) Thermistors NTC NI 0.5 LEAD 10K SPECIAL TOL blk E3 A

Datasheet

40In Stock

500Expected 8/18/2026

CHF 1.39

CHF 1.05

CHF 0.841

CHF 0.785

View

Min.: 1
Mult.: 1

Fuses with Leads - Through Hole 125V UL FA LL .100A TE5

39501000000
Littelfuse
1: CHF 1.46
2’057In Stock

Mfr. Part No.
39501000000

Mouser Part No
576-3950100000

Littelfuse

Fuses with Leads - Through Hole 125V UL FA LL .100A TE5

Learn More

Datasheet

2’057In Stock

CHF 1.46

CHF 1.29

CHF 1.23

CHF 0.996

View

Reel

CHF 0.612

Min.: 1
Mult.: 1

: 1’400

Board Mount Surge Protectors I- (TRIGGER)50MA 250V(I

TBU-CA025-050-WH-Q
Bourns
1: CHF 1.71
12’774In Stock

Mfr. Part No.
TBU-CA025-050-WH-Q

Mouser Part No
652-TBUCA025-050-WHQ

Bourns

Board Mount Surge Protectors I- (TRIGGER)50MA 250V(I

Learn More

Datasheet

12’774In Stock

Cut Tape

CHF 1.71

CHF 1.51

CHF 1.05

CHF 0.841

CHF 0.775

Reel

CHF 0.666

Min.: 1
Mult.: 1

: 3’000

Fuses with Leads - Through Hole 20A 350V

0697H9200-05
Bel Fuse
1: CHF 0.388
4’208In Stock

Mfr. Part No.
0697H9200-05

Mouser Part No
530-0697H9200-05

Bel Fuse

Fuses with Leads - Through Hole 20A 350V

Learn More

Datasheet

4’208In Stock

CHF 0.388

CHF 0.353

CHF 0.292

CHF 0.27

View

Min.: 1
Mult.: 1

Fuses with Leads - Through Hole 2-Pin Radial Fuse Rectangular Time Lag IEC Ammo Pack 2.5A

0697W2500-02
Bel Fuse
1: CHF 0.365
3’719In Stock

Mfr. Part No.
0697W2500-02

Mouser Part No
530-0697W2500-02

Bel Fuse

Fuses with Leads - Through Hole 2-Pin Radial Fuse Rectangular Time Lag IEC Ammo Pack 2.5A

Datasheet

3’719In Stock

CHF 0.365

CHF 0.332

CHF 0.276

CHF 0.254

Reel

CHF 0.145

View

Min.: 1
Mult.: 1

: 1’000

Fuses with Leads - Through Hole 2-Pin Radial Fuse Rectangular Time Lag IEC Short Leads 2A

0697W2000-05
Bel Fuse
1: CHF 0.365
4’981In Stock

Mfr. Part No.
0697W2000-05

Mouser Part No
530-0697W2000-05

Bel Fuse

Fuses with Leads - Through Hole 2-Pin Radial Fuse Rectangular Time Lag IEC Short Leads 2A

Datasheet

4’981In Stock

CHF 0.365

CHF 0.332

CHF 0.276

CHF 0.254

View

Min.: 1
Mult.: 1

Fuses with Leads - Through Hole 20A 350V

0697H9200-02
Bel Fuse
1: CHF 0.388
6’449In Stock

Mfr. Part No.
0697H9200-02

Mouser Part No
530-0697H9200-02

Bel Fuse

Fuses with Leads - Through Hole 20A 350V

Learn More

Datasheet

6’449In Stock

CHF 0.388

CHF 0.353

CHF 0.292

CHF 0.27

Reel

CHF 0.167

View

Min.: 1
Mult.: 1

: 1’000

Fuses with Leads - Through Hole 250V IEC TL TE5 LL AMMO 4A

40014000000
Littelfuse
1: CHF 1.56
936In Stock

Mfr. Part No.
40014000000

Mouser Part No
576-40014000000

Littelfuse

Fuses with Leads - Through Hole 250V IEC TL TE5 LL AMMO 4A

Learn More

Datasheet

936In Stock

CHF 1.56

CHF 1.40

CHF 1.33

CHF 1.08

View

Reel

CHF 0.668

Min.: 1
Mult.: 1

: 1’400

Board Mount Surge Protectors 200mA 850Vimp

P850-G200-WH
Bourns
1: CHF 1.59
984In Stock

Mfr. Part No.
P850-G200-WH

Mouser Part No
652-P850-G200-WH

Bourns

Board Mount Surge Protectors 200mA 850Vimp

Learn More

Datasheet

Product Comments

984In Stock

Cut Tape

CHF 1.59

CHF 1.19

CHF 0.95

CHF 0.848

Reel

CHF 0.79

View

MouseReel Available

Min.: 1
Mult.: 1

: 3’000

Inrush Current Limiters 10mm 5ohms 3A INRSH CURR LIMITER UL Approved

SL105R003
Vishay / Ametherm
1: CHF 1.44
2’391In Stock

Mfr. Part No.
SL105R003

Mouser Part No
995-SL10-5R003

Vishay / Ametherm

Inrush Current Limiters 10mm 5ohms 3A INRSH CURR LIMITER UL Approved

Datasheet

2’391In Stock

CHF 1.44

CHF 1.33

CHF 1.11

CHF 0.931

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors Single ended, Epoxy NTC, 50K ohm, 3950 B

NRL3504F3950B1F
Eaton Electronics
1: CHF 0.931
1’973In Stock

Mfr. Part No.
NRL3504F3950B1F

Mouser Part No
504-NRL3504F3950B1F

Eaton Electronics

NTC (Negative Temperature Coefficient) Thermistors Single ended, Epoxy NTC, 50K ohm, 3950 B

Learn More

Datasheet

1’973In Stock

CHF 0.931

CHF 0.703

CHF 0.562

CHF 0.529

View

Min.: 1
Mult.: 1

Board Mount Surge Protectors 650V, 50mA Single Bidirectional TBU, AECQ

TBU-CA065-050-WH-Q
Bourns
1: CHF 1.77
8’611In Stock

Mfr. Part No.
TBU-CA065-050-WH-Q

Mouser Part No
652-TBU-CA065-050WHQ

Bourns

Board Mount Surge Protectors 650V, 50mA Single Bidirectional TBU, AECQ

Learn More

Datasheet

8’611In Stock

Cut Tape

CHF 1.77

CHF 1.51

CHF 1.21

CHF 1.14

Reel

CHF 1.14

CHF 0.731

MouseReel Available

Min.: 1
Mult.: 1

: 3’000

Fuses with Leads - Through Hole 2-Pin Radial Fuse, Rectangular, Time Lag, IEC, Bulk Pack, 1A

0HAAL1000-01
Bel Fuse
1: CHF 0.436
5’057In Stock
New At Mouser

Mfr. Part No.
0HAAL1000-01

Mouser Part No
530-0HAAL1000-01

New At Mouser

Bel Fuse

Fuses with Leads - Through Hole 2-Pin Radial Fuse, Rectangular, Time Lag, IEC, Bulk Pack, 1A

Learn More

Datasheet

5’057In Stock

Cut Tape

CHF 0.436

CHF 0.341

CHF 0.287

CHF 0.261

Reel

CHF 0.20

View

Min.: 1
Mult.: 1

: 2’000

Fuses with Leads - Through Hole 2-Pin Radial Fuse, Rectangular, Time Lag, IEC, Ammo Pack, 2A

0HAAL2000-02
Bel Fuse
1: CHF 0.365
7’998In Stock
New At Mouser

Mfr. Part No.
0HAAL2000-02

Mouser Part No
530-0HAAL2000-02

New At Mouser

Bel Fuse

Fuses with Leads - Through Hole 2-Pin Radial Fuse, Rectangular, Time Lag, IEC, Ammo Pack, 2A

Learn More

Datasheet

7’998In Stock

CHF 0.365

CHF 0.31

CHF 0.263

CHF 0.242

Reel

CHF 0.189

View

Min.: 1
Mult.: 1

: 1’000

Fuses with Leads - Through Hole 20A 350V

0697H9200-01
Bel Fuse
1: CHF 0.388
8’323In Stock

Mfr. Part No.
0697H9200-01

Mouser Part No
530-0697H9200-01

Bel Fuse

Fuses with Leads - Through Hole 20A 350V

Learn More

Datasheet

8’323In Stock

CHF 0.388

CHF 0.353

CHF 0.292

CHF 0.27

View

Min.: 1
Mult.: 1

Fuses with Leads - Through Hole 300V TL TE5 LL 2A

36912000000
Littelfuse
1: CHF 0.658
15’434In Stock
11’200Expected 9/17/2026

Mfr. Part No.
36912000000

Mouser Part No
576-36912000000

Littelfuse

Fuses with Leads - Through Hole 300V TL TE5 LL 2A

Learn More

Datasheet

15’434In Stock

11’200Expected 9/17/2026

CHF 0.658

CHF 0.585

CHF 0.513

CHF 0.441

View

Reel

CHF 0.277

Min.: 1
Mult.: 1

: 1’400

Fuses with Leads - Through Hole 300V TL TE5 SL 2A

36912000440
Littelfuse
1: CHF 0.626
4’094In Stock

Mfr. Part No.
36912000440

Mouser Part No
576-36912000440

Littelfuse

Fuses with Leads - Through Hole 300V TL TE5 SL 2A

Learn More

Datasheet

4’094In Stock

CHF 0.626

CHF 0.522

CHF 0.481

CHF 0.399

View

Min.: 1
Mult.: 1

Fuses with Leads - Through Hole 250V IEC TL TE5 LL AMMO .500A

40005000000
Littelfuse
1: CHF 1.64
2’887In Stock

Mfr. Part No.
40005000000

Mouser Part No
576-40005000000

Littelfuse

Fuses with Leads - Through Hole 250V IEC TL TE5 LL AMMO .500A

Learn More

Datasheet

2’887In Stock

CHF 1.64

CHF 1.48

CHF 1.40

CHF 1.13

View

Reel

CHF 0.703

Min.: 1
Mult.: 1

: 1’400

Fuses with Leads - Through Hole 250V IEC TL TE5 SL SPECIAL .500A

40005000440
Littelfuse
1: CHF 1.61
2’757In Stock

Mfr. Part No.
40005000440

Mouser Part No
576-40005000440

Littelfuse

Fuses with Leads - Through Hole 250V IEC TL TE5 SL SPECIAL .500A

Learn More

Datasheet

2’757In Stock

CHF 1.61

CHF 1.35

CHF 1.24

CHF 1.03

View

Min.: 1
Mult.: 1

Board Mount Surge Protectors 140V High Efficiency Sw. Surge Stopper

LTC7862HUFD#PBF
Analog Devices
1: CHF 11.14
264In Stock

Mfr. Part No.
LTC7862HUFD#PBF

Mouser Part No
584-7862HUFDPB

Analog Devices

Board Mount Surge Protectors 140V High Efficiency Sw. Surge Stopper

Datasheet

264In Stock

CHF 11.14

CHF 8.80

CHF 8.44

CHF 8.22

View

Min.: 1
Mult.: 1

Board Mount Surge Protectors 240mA 40Vimp

P40-G240-WH
Bourns
1: CHF 1.16
8’227In Stock

Mfr. Part No.
P40-G240-WH

Mouser Part No
652-P40-G240-WH

Bourns

Board Mount Surge Protectors 240mA 40Vimp

Learn More

Datasheet

Product Comments

8’227In Stock

Cut Tape

CHF 1.16

CHF 0.977

CHF 0.732

CHF 0.555

CHF 0.515

Reel

CHF 0.515

MouseReel Available

Min.: 1
Mult.: 1

: 3’000

4 mm Circuit Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support