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

46578 Products showing for Fuses & Circuit Breakers

151 / 999+
Better World
ABB, XT3N MCCB 4P 250A, Fixed Mount
  • RS Stock No. 236-6581
  • Mfr. Part No. 1SDA068066R1 XT3N 250 TMD 250A 3P+N FF
Each
MYR6,019.21
Littelfuse 12A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 769-0001
  • Mfr. Part No. 0215012.MXP
Each (In a Pack of 25)
MYR4.95
SIBA 1A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 418-9517
  • Mfr. Part No. 70-059-61/1A
Each (In a Pack of 10)
MYR2.926
ABB, Protecta MCCB 3P 160A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 831-9175
  • Mfr. Part No. 1SDA067418R1 XT1N 160 TMD 160-1600 3p F F
Each
MYR2,447.27
RS PRO 16A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 209-9298
Each (In a Pack of 10)
MYR5.675
Eaton 25A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7421
  • Mfr. Part No. ABC-25-R
Each
MYR22.72
Better World
Schneider Electric, Compact MCCB 4P 80A, Breaking Capacity 50 kA, Clip-On
  • RS Stock No. 178-7760
  • Mfr. Part No. LV426476
Each
MYR3,181.52
Better World
Schneider Electric, ComPacT NSX MCCB 3P 80A, Fixed Mount
  • RS Stock No. 254-6307
  • Mfr. Part No. C11B3TM080L
Each
MYR2,188.90
Eaton xEffect - FRCdM RCCB, 63A, 4 Pole, 30mA, 240/415V ac
  • RS Stock No. 127-421
  • Mfr. Part No. 180426 FRCDM-63/4/003-G/BFQ/60HZ
Each
MYR6,774.85
Schneider Electric RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A-SI, Acti9 Range
  • RS Stock No. 276-8719
  • Mfr. Part No. A9D27216
Each
MYR3,383.38
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 30A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-572
  • Mfr. Part No. 3VA5130-5EC31-1AA0
Each
MYR2,045.38
Better World
Schneider Electric Multi 9 C60SP MCB, 4P, 32A Curve B, 440V AC, 15 kA Breaking Capacity
  • RS Stock No. 211-2352
  • Mfr. Part No. M9F21432
Each
MYR367.48
Better World
ABB System Pro M Compact S200M MCB, 2P, 63A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 132-087
  • Mfr. Part No. 2CDS272001R0634 S202M-C63
Each
MYR428.54
Lovato P1RD MCCB, 25A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 276-5662
  • Mfr. Part No. P1RD2P25A030
Each
MYR982.25
Eaton 315A British Standard Fuse, B3, 415V ac, 110mm
  • RS Stock No. 139-990
  • Mfr. Part No. ED315
Each
MYR173.04
Eaton RCCB, 40A, 4 Pole, 100mA, Type A, 230/400V ac
  • RS Stock No. 922-8673
  • Mfr. Part No. 235440 PFIM-40/4/01-A-MW
Each
MYR1,067.48
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 1kA, Fixed Mount
  • RS Stock No. 232-0156
  • Mfr. Part No. 1SDA062738R1 T7S 1000A PR231-LS/I FF
Each
MYR12,010.78
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 55 kA, DIN Rail Mount
  • RS Stock No. 272-0185
  • Mfr. Part No. 3VA1580-5GF42-0AA0
Each
MYR18,098.52
Better World
Siemens Sentron 5SY6 MCB, 2P, 1A Curve C, 400V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 196-3624
  • Mfr. Part No. 5SY6201-7
Each
MYR354.79
ABB RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6974
  • Mfr. Part No. 2CSR275080R1324 DS201 M C32 AC30
Each
MYR1,191.89
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