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.

51028 Products showing for Fuses & Circuit Breakers

597 of 999+
  • RS Stock No. 268-058
  • Mfr. Part No. 3VA5260-7ED61-0AA0
Each
£541.76(exc. VAT)
Better World
  • RS Stock No. 124-3151
  • Mfr. Part No. 5SY4101-8
Each
£22.46(exc. VAT)
  • RS Stock No. 261-446
  • Mfr. Part No. C22G125S CYL FUSE >STR >22 x 58 125A GG 400V AC
1 Pack of 10
£90.02(exc. VAT)
  • RS Stock No. 127-497
  • Mfr. Part No. 183354 IZMX16H3-V12W-1
Each
£5,642.15(exc. VAT)
  • RS Stock No. 212-8998
  • Mfr. Part No. 5SJ4113-6HG40
Each
£38.19(exc. VAT)
  • RS Stock No. 277-0747
  • Mfr. Part No. 3WA9111-0AF06
Each
£903.46(exc. VAT)
  • RS Stock No. 608-686
  • Mfr. Part No. 3NB1132-1KK15
1 Pack of 3
£497.58(exc. VAT)
  • RS Stock No. 608-760
  • Mfr. Part No. 3NC3241-1U
1 Pack of 3
£497.58(exc. VAT)
  • RS Stock No. 312-3853
  • Mfr. Part No. GB2DB16
Each
£63.57(exc. VAT)
Better World
  • RS Stock No. 271-9861
  • Mfr. Part No. 3VA1125-5ED16-0AA0
Each
£111.95(exc. VAT)
  • RS Stock No. 169-9434
  • Mfr. Part No. S501-100-R
1 Bag of 1000
£1,346.13(exc. VAT)
  • RS Stock No. 277-0875
  • Mfr. Part No. 3WA9111-0BB22
1 Set
£507.97(exc. VAT)
  • RS Stock No. 187-5198
  • Mfr. Part No. 5ST3735-1
Each
£44.18(exc. VAT)
  • RS Stock No. 269-7938
  • Mfr. Part No. 1110991
Each (In a Pack of 12)
£7.605(exc. VAT)
  • RS Stock No. 263-607
  • Mfr. Part No. 3VA9477-0CK12
1 Kit
£546.31(exc. VAT)
  • RS Stock No. 253-776
  • Mfr. Part No. 269172 NZMN2-AF25-NA
Each
£511.05(exc. VAT)
  • RS Stock No. 275-0165
  • Mfr. Part No. AP12-1-42-102
1 Box of 5
£1,873.14(exc. VAT)
Better World
  • RS Stock No. 243-6263
  • Mfr. Part No. 5SU1844-7WK82
Each
£1,839.38(exc. VAT)
  • RS Stock No. 384-083
  • Mfr. Part No. 3101.0045
Each (In a Pack of 5)
£3.514(exc. VAT)
  • RS Stock No. 203-2010
  • Mfr. Part No. 3NA7144
Each (In a Pack of 3)
£12.977(exc. VAT)
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