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.

50915 Products showing for Fuses & Circuit Breakers

406 of 999+
  • RS Stock No. 210-3518
  • Mfr. Part No. 3VA9201-0QE20
Each
£16.95(exc. VAT)
  • RS Stock No. 629-051
  • Mfr. Part No. 8GK9735-0KK10
Each
£15.26(exc. VAT)
  • RS Stock No. 225-6096
  • Mfr. Part No. 2CSF202001R4630 F202 AC-63/0.5
Each
£150.68(exc. VAT)
  • RS Stock No. 262-966
  • Mfr. Part No. BAO35
1 Pack of 20
£362.00(exc. VAT)
  • RS Stock No. 140-610
  • Mfr. Part No. 2CCS553103R8254
Each
£132.63(exc. VAT)
  • RS Stock No. 121-036
  • Mfr. Part No. 168289 FRBDM-D10/1N/01-G/A
Each
£141.08(exc. VAT)
Better World
  • RS Stock No. 236-6609
  • Mfr. Part No. 1SDA068135R1 XT4N 160 Ekip LSI 160A FF
Each
£1,202.97(exc. VAT)
  • RS Stock No. 130-796
  • Mfr. Part No. A9R12491
Each
£416.15(exc. VAT)
Better World
  • RS Stock No. 254-6359
  • Mfr. Part No. C25H3TM250
Each
£1,731.75(exc. VAT)
  • RS Stock No. 288-1812
  • Mfr. Part No. 2530610000
Each
£153.74(exc. VAT)
  • RS Stock No. 703-8431P
  • Mfr. Part No. C14G32
Each (Supplied in a Bag)
£1.935(exc. VAT)
  • RS Stock No. 186-3484
  • Mfr. Part No. 2CSS255102R0064 SN201 C6-L
Each
£39.47(exc. VAT)
Better World
  • RS Stock No. 188-4741
  • Mfr. Part No. GV3L73
Each
£306.90(exc. VAT)
  • RS Stock No. 123-703
  • Mfr. Part No. 170885 FRBM6-B40/2/003-A
Each
£137.66(exc. VAT)
  • RS Stock No. 212-1985
  • Mfr. Part No. 3130-F120-P7T1-W02Q-10A
Each
£29.98(exc. VAT)
  • RS Stock No. 825-5860
  • Mfr. Part No. P1MB3PC63
Each
£80.04(exc. VAT)
  • RS Stock No. 182-1420
  • Mfr. Part No. MAI
Each
£22.81(exc. VAT)
Better World
  • RS Stock No. 212-8935
  • Mfr. Part No. 5SL6301-7
Each
£77.12(exc. VAT)
Better World
  • RS Stock No. 210-3362
  • Mfr. Part No. 5SL4301-6
Each
£87.64(exc. VAT)
  • RS Stock No. 231-8365
  • Mfr. Part No. 5SP3835-3
Each
£391.34(exc. VAT)
Results per page