Fuses & Circuit Breakers

Although they work in different ways, fuses and circuit breakers broadly have the same purpose; to protect electrical appliances and electrical circuits from short circuits, and excessive current (called overcurrent or overload).

Fuses

Fuses are relatively low cost electrical safety devices. If too much current enters the circuit, the fuse will burn out (sometimes called blowing out). When the fuse blows out it breaks the circuit. This protects the attached devices and allows you to touch devices without being electrocuted. When the fuse blows, it must be replaced before using the device or appliance again.

Circuit breakers

Circuit breakers work in a similar way to fuses, but they are resettable. Once a fault is detected (this is typically a short circuit or an excessive amount of current flowing through the circuit) the circuit breaker will interrupt the flow of current. When the circuit breaker trips, it's simply a case of flicking a switch to reset the circuit breaker. As soon as you've reset the circuit breaker, it is ready to use again.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses
Fuses - PCB
Fuses - PCB

46580 Products showing for Fuses & Circuit Breakers

60 / 999+
Eaton xComfort KLV Distribution Board Enclosure
  • RS Stock No. 124-790
  • Mfr. Part No. 178816 KLV-24UPS-F
Each
MYR713.74
Eaton 6A Bolted Tag Fuse, 1.2kV, 124mm
  • RS Stock No. 181-8630
  • Mfr. Part No. TAC6
Each
MYR261.95
SIBA 15A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 768-6128
  • Mfr. Part No. 5021526.15
Each
MYR90.36
Eaton 32A British Standard Fuse, A1, 415V, 42.5mm
  • RS Stock No. 139-928
  • Mfr. Part No. NITD32M63
Each (In a Pack of 5)
MYR48.384
Legrand 6A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 266-3132
  • Mfr. Part No. 0 143 06
1 Box of 10
MYR207.92
ETA Thermal Circuit Breaker - 2-5700 Single Pole 250V Voltage Rating Panel Mount, 15A Current Rating
  • RS Stock No. 405-9157
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-15A
Each
MYR159.27
Better World
Siemens Sentron 5SY4 MCB, 3P, 10A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1372
  • Mfr. Part No. 5SY4310-7
Each
MYR610.12
Eaton 32A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 703-8431
  • Mfr. Part No. C14G32
Each (In a Pack of 10)
MYR9.722
Eaton 125A NH Fuse, NH00, 690V ac
  • RS Stock No. 181-8496
  • Mfr. Part No. 125NHG00B-690
1 Box of 3
MYR96.27
Eaton, xEnergy MCCB 3P 250A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 537-5589
  • Mfr. Part No. 259124 NZMN2-VE250
Each
MYR6,475.75
Phoenix Contact Electronic Circuit Breaker
  • RS Stock No. 201-6507
  • Mfr. Part No. 2800909
Each
MYR269.11
Better World
ABB System Pro M Compact S200 MCB, 3P, 32A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 746-7772
  • Mfr. Part No. 2CDS253001R0324 S203-C32
Each
MYR401.51
TE Connectivity 30A Fuse Holder for 10 x 38mm Fuse, 1P, 600V
  • RS Stock No. 299-079
  • Mfr. Part No. 1SNF100029R0000
Each
MYR23.81
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 3P, 30A Curve C, 277V AC
  • RS Stock No. 256-6810
  • Mfr. Part No. M9F52330
Each
MYR2,086.37
Mersen NH Fuse Puller, Sizes 00 → 3
  • RS Stock No. 136-0623
  • Mfr. Part No. P215592 / NHHANDLE
Each
MYR276.85
Eaton 80A Ceramic Cartridge Fuse, 23 x 57mm
  • RS Stock No. 182-1825
  • Mfr. Part No. 80KR85
Each
MYR46.53
Eaton 20A Rail Mount Fuse Holder for A1 Fuse, 1P, 690V ac
  • RS Stock No. 221-601
  • Mfr. Part No. RS20P/G/WHI
Each
MYR209.57
Better World
Siemens Sentron 5SY4 MCB, 1P, 1A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 622-0008
  • Mfr. Part No. 5SY4101-7
Each
MYR178.22
RS PRO MCB, 3P, 63A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0210
Each
MYR99.43
Siemens ALPHA Distribution Board, 4 Way
  • RS Stock No. 211-6073
  • Mfr. Part No. 8GB1371-0
Each
MYR111.98
1
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