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

50687 Products showing for Fuses & Circuit Breakers

19 of 999+
In Stock
Better World
  • RS stock no. 219-9126
  • Mfr. Part No. M9F22210
Each
R 1,972.96(exc. VAT)
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Each (In a Pack of 10)
R 8.519(exc. VAT)
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  • RS stock no. 144-4950
  • Mfr. Part No. MJT716
Each
R 643.85(exc. VAT)
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  • RS stock no. 336-028
  • Mfr. Part No. 106-P30-000040-0.5A
Each
R 367.96(exc. VAT)
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  • RS stock no. 251-2032
  • Mfr. Part No. CDS743F
Each
R 2,967.34(exc. VAT)
In Stock
  • RS stock no. 627-3406
  • Mfr. Part No. 3030271
Each (In a Pack of 5)
R 99.39(exc. VAT)
In Stock
  • RS stock no. 426-3148
Each
R 182.52(exc. VAT)
In Stock
  • RS stock no. 782-0911
  • Mfr. Part No. W28-XQ1A-3
Each
R 103.87(exc. VAT)
In Stock
  • RS stock no. 211-0181
  • Mfr. Part No. 5SD7414-1
Each
R 23,259.29(exc. VAT)
Temporarily out of stock
  • RS stock no. 265-533
  • Mfr. Part No. 8UC7414-1BB44
Each
R 4,971.18(exc. VAT)
In Stock
  • RS stock no. 787-4388
  • Mfr. Part No. MAHC0001ZXJ
Each
R 557.10(exc. VAT)
In Stock
  • RS stock no. 397-597
  • Mfr. Part No. 3NA3124
Each (In a Pack of 3)
R 285.24(exc. VAT)
In Stock
  • RS stock no. 541-4410
  • Mfr. Part No. 0217002.MXP
Each (In a Pack of 10)
R 8.049(exc. VAT)
Temporarily out of stock
  • RS stock no. 275-8813
  • Mfr. Part No. LVS03220
1 Box of 5
R 1,570.72(exc. VAT)
Temporarily out of stock
  • RS stock no. 189-5336
  • Mfr. Part No. E1062696 / CMC103
Each
R 485.22(exc. VAT)
In Stock
  • RS stock no. 537-1638
  • Mfr. Part No. S506-250-R
Each (In a Pack of 10)
R 10.171(exc. VAT)
In Stock
Better World
  • RS stock no. 219-9025
  • Mfr. Part No. A9N26946
Each
R 1,934.41(exc. VAT)
In Stock
  • RS stock no. 563-447
Each (In a Pack of 10)
R 14.122(exc. VAT)
In Stock
  • RS stock no. 893-8562
  • Mfr. Part No. 20-209-08/160A
Each (In a Pack of 3)
R 508.703(exc. VAT)
Temporarily out of stock
  • RS stock no. 232-022
  • Mfr. Part No. 108105 PKPM2-10/2/B/003-A
Each
R 4,662.35(exc. VAT)
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