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.

50914 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 354-418
  • Mfr. Part No. 33820
Each
£364.98(exc. VAT)
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  • Mfr. Part No. 2CDE601101R2905
Each
£115.50(exc. VAT)
  • RS Stock No. 144-4848
  • Mfr. Part No. BDC440F
Each
£293.75(exc. VAT)
Better World
  • RS Stock No. 210-3330
  • Mfr. Part No. 3VA1120-6EE32-0AA0
Each
£195.20(exc. VAT)
  • RS Stock No. 269-8334
  • Mfr. Part No. 3ND1805
Each (In a Pack of 3)
£10.787(exc. VAT)
  • RS Stock No. 270-7939
  • Mfr. Part No. 3403.0166.11
Each
£0.66(exc. VAT)
  • RS Stock No. 252-278
  • Mfr. Part No. 193498 FRBmM-C16/1N/03-F
Each
£183.67(exc. VAT)
  • RS Stock No. 825-6012
  • Mfr. Part No. P1MB4PD63
Each
£129.11(exc. VAT)
Better World
  • RS Stock No. 248-3871
  • Mfr. Part No. M9P22616
Each
£47.93(exc. VAT)
  • RS Stock No. 228-8260
  • Mfr. Part No. 8US1998-1CA10
Each (In a Pack of 2)
£10.22(exc. VAT)
Better World
  • RS Stock No. 210-9402
  • Mfr. Part No. 3VA9481-0WF30
Each
£32.23(exc. VAT)
  • RS Stock No. 249-023
  • Mfr. Part No. 192064 NZMN2-4-PX100/VAR-SVE
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£1,876.70(exc. VAT)
  • RS Stock No. 275-0063
  • Mfr. Part No. 209-3-1-63-4-2-60-H-V
Each
£227.37(exc. VAT)
  • RS Stock No. 277-0939
  • Mfr. Part No. 3WA9111-0EK62
1 Set
£269.33(exc. VAT)
  • RS Stock No. 123-525
  • Mfr. Part No. 170219 FBSMV-40/3/01-A
Each
£92.34(exc. VAT)
  • RS Stock No. 647-8370P
  • Mfr. Part No. MF-USMF020-2
Each (Supplied on a Reel)
£0.233(exc. VAT)
  • RS Stock No. 207-234
  • Mfr. Part No. KSA630ET450
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£2,606.61(exc. VAT)
  • RS Stock No. 121-218
  • Mfr. Part No. 167900 FRCDM-25/4/03-S/B
Each
£701.10(exc. VAT)
  • RS Stock No. 182-1416
  • Mfr. Part No. GH1000
Each
£862.42(exc. VAT)
  • RS Stock No. 247-1879
  • Mfr. Part No. 34012
Each
£5,490.97(exc. VAT)
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