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.

50907 Products showing for Fuses & Circuit Breakers

581 of 999+
  • RS Stock No. 218-8810
  • Mfr. Part No. 1492-SPM3B005
Each
£64.88(exc. VAT)
  • RS Stock No. 541-4268
  • Mfr. Part No. 0217.080MXP
Each (In a Pack of 10)
£1.024(exc. VAT)
  • RS Stock No. 523-4927
  • Mfr. Part No. F-60-A
Each
£1.42(exc. VAT)
  • RS Stock No. 171-6782
  • Mfr. Part No. S505H-V-6-3-R
Each (In a Pack of 5)
£0.496(exc. VAT)
  • RS Stock No. 867-1782
  • Mfr. Part No. 4301.1413
Each
£5.03(exc. VAT)
Better World
  • RS Stock No. 219-8285
  • Mfr. Part No. A9N18425
Each
£264.18(exc. VAT)
  • RS Stock No. 230-407
  • Mfr. Part No. 113529 NZMN3-VE250-T-AVE
Each
£2,762.75(exc. VAT)
  • RS Stock No. 414-752
  • Mfr. Part No. GSA25
Each (In a Pack of 5)
£28.502(exc. VAT)
  • RS Stock No. 257-472
  • Mfr. Part No. 3VA5570-6EC32-1AA0
Each
£4,606.80(exc. VAT)
  • RS Stock No. 255-1660
  • Mfr. Part No. 140G-H-TC3L
Each
£38.84(exc. VAT)
  • RS Stock No. 229-269
  • Mfr. Part No. C10M12 CYLINDRICAL FUSE 10 x 38 12A AM 500V AC
1 Pack of 10
£8.72(exc. VAT)
  • RS Stock No. 864-4355
  • Mfr. Part No. 242399 PLSM-C6/2-MW
Each
£65.99(exc. VAT)
Better World
  • RS Stock No. 225-8793
  • Mfr. Part No. 5SU1656-6KK16
Each
£123.56(exc. VAT)
  • RS Stock No. 260-7801
  • Mfr. Part No. C16N3MA100
Each
£723.11(exc. VAT)
  • RS Stock No. 179-3065
  • Mfr. Part No. 83230110 / STPT23-20K275V-2PG-LF
Each
£72.96(exc. VAT)
  • RS Stock No. 354-299
  • Mfr. Part No. KSA1000ET450
Each
£4,104.98(exc. VAT)
  • RS Stock No. 200-833
  • Mfr. Part No. 2CDS274061R0538
Each
£489.71(exc. VAT)
Better World
  • RS Stock No. 746-8015
  • Mfr. Part No. 2CDS252001R0557 S202-K40
Each
£79.23(exc. VAT)
Better World
  • RS Stock No. 256-4054
  • Mfr. Part No. A9MEM1593
Each
£993.84(exc. VAT)
  • RS Stock No. 188-6754
  • Mfr. Part No. P084308
Each (In a Pack of 10)
£3.482(exc. VAT)
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