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

35 / 999+
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 6A Curve D, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3556
  • Mfr. Part No. A9F55306
Each
MYR997.17
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 20A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-283
  • Mfr. Part No. 3VA5120-4EC31-0AA0
Each
MYR1,990.24
Phoenix Contact Electronic Device Circuit Breaker Electronic Circuit breaker 8A 24V PTCB, 1 channels , DIN Rail Mount
  • RS Stock No. 207-2796
  • Mfr. Part No. 2908262
Each
MYR245.44
Better World
ABB Compact Home SH200 MCB, 3P, 32A Curve C, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 539-8374
  • Mfr. Part No. 2CDS213001R0324 SH203-C32
Each
MYR350.11
Eaton, xEnergy MCCB 3P 200A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 628-8054
  • Mfr. Part No. 265725 NZMN2-M200
1 Box of 1
MYR3,214.63
Siemens 25A D02 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1089
  • Mfr. Part No. 5SE2325
Each (In a Pack of 10)
MYR6.65
Socomec 32A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 252-5317
  • Mfr. Part No. 60230032
Each (In a Pack of 10)
MYR10.317
ABB F200 RCCB, 25A, 2 Pole, 30mA, Type A, 230/400V ac
  • RS Stock No. 177-5051
  • Mfr. Part No. 2CSF202401R1250 F202 A-25/0,03 AP-R
Each
MYR1,145.21
Mersen 2A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2897
  • Mfr. Part No. S302788
1 Box of 10
MYR484.33
ABB 8 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1899
  • Mfr. Part No. 1SL1201A00 65P08X12
Each
MYR153.23
Siemens 25A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 395-806
  • Mfr. Part No. 3NC1025
Each (In a Pack of 10)
MYR98.179
Siemens 10A F Cartridge Fuse, 10 x 38mm
  • RS Stock No. 203-2062
  • Mfr. Part No. 3NW6003-1
Each (In a Pack of 10)
MYR23.77
Hager NFN MCB, 4P, 16A Curve C, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4722
  • Mfr. Part No. NFN416
Each
MYR917.16
Schurter 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-7106
  • Mfr. Part No. 70103440
Each (In a Pack of 10)
MYR10.306
RS PRO 6.3A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-396
Each (In a Pack of 10)
MYR1.728
Mersen 16A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-7274
  • Mfr. Part No. F214618
Each (In a Pack of 10)
MYR7.246
RS PRO MCB, 1P, 4A Curve C, 240 → 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 265-0192
Each
MYR48.36
Better World
Siemens SENTRON 5SY7 MCB, 1+N, 2A Curve C, 230V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 212-8978
  • Mfr. Part No. 5SY7502-7
Each
MYR473.73
Socomec 2A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 122-5262
  • Mfr. Part No. 60120002
Each (In a Pack of 10)
MYR6.272
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 3A Curve D, 240V AC
  • RS Stock No. 256-6769
  • Mfr. Part No. M9F23203
Each
MYR584.54
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