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

2329 / 999+
Temporarily out of stock
Better World
  • RS Stock No. 216-4785
  • Mfr. Part No. 5SY5250-7
Each
MYR1,338.45
In Stock
  • RS Stock No. 182-1801
  • Mfr. Part No. 170M1561D
Each
MYR340.00
In Stock
  • RS Stock No. 284-5209
  • Mfr. Part No. 0034.6603
Each (In a Pack of 10)
MYR3.68
Temporarily out of stock
  • RS Stock No. 121-010
  • Mfr. Part No. 168451 NZMC3-A400-SVE
Each
MYR11,658.99
Temporarily out of stock
  • RS Stock No. 602-226
  • Mfr. Part No. ADF720F
Each
MYR1,564.49
Temporarily out of stock
  • RS Stock No. 259-4178
  • Mfr. Part No. 1SDA072293R1
Each
MYR37,728.12
In Stock
  • RS Stock No. 769-4558
  • Mfr. Part No. 239102 FAZ6-C13/2
Each
MYR419.69
Temporarily out of stock
  • RS Stock No. 120-998
  • Mfr. Part No. 168266 FRBDM-B16/1N/003-G/A
Each
MYR841.00
In Stock
Better World
  • RS Stock No. 238-3298
  • Mfr. Part No. A9DK5716
Each
MYR2,098.17
Temporarily out of stock
Better World
  • RS Stock No. 282-6546
  • Mfr. Part No. PV-63A-01XL-B
Each
MYR1,687.40
Temporarily out of stock
Better World
  • RS Stock No. 221-0879
  • Mfr. Part No. A9N18412
Each
MYR1,076.34
In Stock
  • RS Stock No. 275-3342
  • Mfr. Part No. AdaBV140-R
Each
MYR25.24
Unavailable
  • RS Stock No. 275-6656
  • Mfr. Part No. 33232
Each
MYR33,173.48
In Stock
  • RS Stock No. 275-0247
  • Mfr. Part No. IELHK111-1-62F-70.0-ABK-01-V
Each
MYR1,507.65
Temporarily out of stock
  • RS Stock No. 212-8810
  • Mfr. Part No. 2880561
Each
MYR910.67
In Stock
  • RS Stock No. 214-2110
  • Mfr. Part No. MGN26380
Each
MYR242.40
Temporarily out of stock
  • RS Stock No. 245-9213
  • Mfr. Part No. SF-0603SPA800R-2
Each (On a Reel of 5000)
MYR3.178
In Stock
  • RS Stock No. 277-8524
Each
MYR81.03
Temporarily out of stock
  • RS Stock No. 454-8304
  • Mfr. Part No. 260203 NZM1/2-XAB
Each
MYR119.06
Temporarily out of stock
  • RS Stock No. 148-713
  • Mfr. Part No. 3VA5160-6ED11-1AA0
Each
MYR1,201.84