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

185 / 999+
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7499
  • Mfr. Part No. C10W3MA100
Each
MYR6,471.99
Temporarily out of stock
Better World
Siemens Sentron 5SY4 MCB, 1+N, 32A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1460
  • Mfr. Part No. 5SY4532-6
Each
MYR424.56
Temporarily out of stock
Schneider Electric, ComPacT New generation MCCB 3P 160A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-201
  • Mfr. Part No. C12H34V160B
Each
MYR21,495.36
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 260-7979
  • Mfr. Part No. C25R42D250
Each
MYR16,672.95
Temporarily out of stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 32A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 232-0244
  • Mfr. Part No. 1SDA067392R1 XT1C 160 TMD 32A FF
Each
MYR1,257.42
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 3P 80A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 358-465
  • Mfr. Part No. NHDF36080TW
Each
MYR8,355.68
Temporarily out of stock
Eaton 12A gG/gL Cartridge Fuse, 14 x 51mm
  • RS Stock No. 229-186
  • Mfr. Part No. C14G12
1 Pack of 10
MYR96.00
In Stock
Littelfuse Fuseholder MAXI Series Base Mount Fuse Holder Cover
  • RS Stock No. 894-9587
  • Mfr. Part No. 01520900TXN
Each
MYR22.28
Temporarily out of stock
Siemens SENTRON 5SJ4132 MCB, 1P, 32A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-901
  • Mfr. Part No. 5SJ4132-8HG42
Each
MYR395.44
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1.6kA, Breaking Capacity 42 kA, Fixed Mount
  • RS Stock No. 347-102
  • Mfr. Part No. C160H360FM
Each
MYR19,842.26
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 4P, 6A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-427
  • Mfr. Part No. 2CDS274061R0377
Each
MYR4,239.16
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1.6kA, Breaking Capacity 42 kA, Fixed Mount
  • RS Stock No. 345-330
  • Mfr. Part No. C160H35AFM
Each
MYR89,861.58
Temporarily out of stock
Eaton 400A Cartridge Fuse, 450.09 x 629.41 x 495.05mm
  • RS Stock No. 261-701
  • Mfr. Part No. BH-2033
Each
MYR3,324.58
Temporarily out of stock
Schneider Electric, Acti9 MCCB 4P 160A, Panel Mount
  • RS Stock No. 654-707
  • Mfr. Part No. SEA9PQCB1604
Each
MYR5,658.88
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 4 channels
  • RS Stock No. 157-097
  • Mfr. Part No. 3VA2116-5JP46-0AA0
Each
MYR12,281.00
Temporarily out of stock
Phoenix Contact 6.3A Base Mount Fuse Holder for 5 x 20mm Fuse, 1P, 60V dc
  • RS Stock No. 207-2666
  • Mfr. Part No. 1054762
Each
MYR82.99
In Stock
Legrand 2A F Ceramic Cartridge Fuse, 8.5 x 32mm
  • RS Stock No. 293-8266
  • Mfr. Part No. 0 123 02
Each (In a Pack of 10)
MYR10.542
Temporarily out of stock
SENTRON Wire Connector for use with 3VA61/62 Series
  • RS Stock No. 263-919
  • Mfr. Part No. 3VA9243-0JG12
1 Kit
MYR310.70
In Stock
Eaton 15A British Standard Fuse, 690V, 63.5mm
  • RS Stock No. 181-8508
  • Mfr. Part No. 15ET
Each (In a Box of 10)
MYR158.282
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 4P, 6A Curve B, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-242
  • Mfr. Part No. 2CDS274061R0065
Each
MYR4,357.84
1
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