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

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  • RS Stock No. 236-7283
  • Mfr. Part No. 1SDA067415R1 XT1N 160 TMD 80A FF
Each
£232.22(exc. VAT)
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  • Mfr. Part No. GSGB40
Each (In a Pack of 5)
£23.766(exc. VAT)
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  • Mfr. Part No. 2CCS573103R8251
Each
£157.57(exc. VAT)
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  • Mfr. Part No. 140G-JTF3-D25
Each
£439.27(exc. VAT)
Better World
  • RS Stock No. 231-9657
  • Mfr. Part No. 2CDS232001R0064 SH202T-C 6
1 Box of 1
£43.65(exc. VAT)
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  • Mfr. Part No. 12ET
Each (In a Box of 10)
£14.229(exc. VAT)
  • RS Stock No. 255-548
  • Mfr. Part No. 260129 NZM3-XDV
Each
£94.39(exc. VAT)
  • RS Stock No. 178-1075
  • Mfr. Part No. F226325 / BTMF42V400
Each
£66.52(exc. VAT)
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Each
£10.30(exc. VAT)
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  • Mfr. Part No. 2CCF019628R0001 S804PV-SP40 - 5 kA
Each
£410.55(exc. VAT)
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  • Mfr. Part No. 2CDS244701R0104
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£68.28(exc. VAT)
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£521.24(exc. VAT)
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  • Mfr. Part No. 83020146 / STPT2-40K275V-4PG
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£76.93(exc. VAT)
  • RS Stock No. 260-9412
  • Mfr. Part No. C10B4TM025
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£519.89(exc. VAT)
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  • Mfr. Part No. 106-P10-000040-8A
Each
£14.70(exc. VAT)
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  • Mfr. Part No. R9F23340
Each
£52.91(exc. VAT)
Better World
  • RS Stock No. 238-3204
  • Mfr. Part No. 5SV6016-6MC16
Each
£278.98(exc. VAT)
Better World
  • RS Stock No. 160-153
  • Mfr. Part No. 3RV2411-1CA10-0BA0
Each
£98.40(exc. VAT)
  • RS Stock No. 272-0244
  • Mfr. Part No. 5SY7106-6KK13
Each
£31.32(exc. VAT)
  • RS Stock No. 152-438
  • Mfr. Part No. 3NA3244-4KK02
Each
£45.61(exc. VAT)
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