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

47 of 999+
Being discontinued
RS PRO 1A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-380
Each (In a Pack of 10)
MYR2.287(exc. VAT)
In Stock
Littelfuse 3.15A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4690
  • Mfr. Part No. 02153.15MXP
Each (In a Pack of 10)
MYR4.399(exc. VAT)
In Stock
Mersen 8A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2967
  • Mfr. Part No. Z201295
1 Box of 10
MYR88.03(exc. VAT)
In Stock
RS PRO 5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-340
Each (In a Pack of 10)
MYR1.479(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 2A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3326
  • Mfr. Part No. A9F54202
Each
MYR402.68(exc. VAT)
Temporarily out of stock
C.BREAKER TMAX XT1 P Fp 3P Ef
  • RS Stock No. 192-0817
  • Mfr. Part No. 1SDA068183R1
Each
MYR1,174.44(exc. VAT)
In Stock
Schurter 2.5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-8086
  • Mfr. Part No. 0034.3121
Each (In a Pack of 10)
MYR1.853(exc. VAT)
In Stock
Eaton RCCB, 40A, 4 Pole, 30mA, Type AC, 230 V ac, 400 V ac
  • RS Stock No. 227-0723
  • Mfr. Part No. 264300 PFGM-40/4/003
Each
MYR493.22(exc. VAT)
Temporarily out of stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 80A, Fixed Mount
  • RS Stock No. 232-0248
  • Mfr. Part No. 1SDA067396R1 XT1C 160 TMD 80A FF
Each
MYR1,488.70(exc. VAT)
In Stock
Littelfuse 1A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 754-6266
  • Mfr. Part No. 0SPF001.H
Each
MYR72.87(exc. VAT)
In Stock
Littelfuse 12A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 787-4303
  • Mfr. Part No. 0314012.HXP
Each (In a Pack of 5)
MYR3.198(exc. VAT)
In Stock
Eaton 25A DIN Rail Mount 6.3 x 32mm Fuse Block, 300V
  • RS Stock No. 233-0629
  • Mfr. Part No. BK-S-8301-1X-DIN
Each (In a Pack of 10)
MYR28.294(exc. VAT)
In Stock
Mersen 15A F GMG Cartridge Fuse, 10 x 38mm
  • RS Stock No. 914-4418
  • Mfr. Part No. ATMR15
Each
MYR138.68(exc. VAT)
Being discontinued
RS PRO 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-431
Each (In a Pack of 10)
MYR2.512(exc. VAT)
In Stock
Europa EUR1 RCCB, 63A, 4 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 210-4757
  • Mfr. Part No. EUR163.30/4A
Each
MYR389.13(exc. VAT)
In Stock
RS PRO 5A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9721
Each (In a Pack of 10)
MYR1.955(exc. VAT)
In Stock
Eaton 500mA Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8364
  • Mfr. Part No. C10G0-5
Each (In a Pack of 10)
MYR8.281(exc. VAT)
Limited stock
RS PRO Automotive, Surge Protection Fuse Kit
  • RS Stock No. 186-6356
1 Kit(s)
MYR655.77(exc. VAT)
Temporarily out of stock
ABB RCBO, 40A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, System Pro M Compact Range
  • RS Stock No. 136-7810
  • Mfr. Part No. 2CSR255051R1404 DSE201 C40 AC30 - N Blue
Each
MYR456.34(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 16A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 734-9267
  • Mfr. Part No. A9F77616
Each
MYR618.94(exc. VAT)
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