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.

Circuit Breakers
Circuit Breakers

Consumer Units & Accessories
Consumer Units & Accessories

Earth & Lightning Protection
Earth & Lightning Protection

Fuse Holders & Accessories
Fuse Holders & Accessories

Fuses
Fuses

Fuses - PCB
Fuses - PCB

50874 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 1-Pole, 10A, Type C, 240V ac AC, 240 V dc DC, 6 kA Breaking Capacity
  • RS stock no. 265-0188
Subtotal (1 unit)
R 200,78(exc. VAT)
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 1-Pole, 20A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS stock no. 265-0199
Subtotal (1 unit)
R 227,30(exc. VAT)
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 2A, Type C, 240V ac AC, 240 V dc DC, 6 kA Breaking Capacity
  • RS stock no. 265-0175
Subtotal (1 unit)
R 466,90(exc. VAT)
In Stock
RS PRO NF12 Series Residual Current Circuit Breaker, 63A, 2-Pole, 30 mA, Type A 230V ac
  • RS stock no. 284-2371
Subtotal (1 unit)
R 1 094,94(exc. VAT)
In Stock
RS PRO 15 A In-line Fuse Holder, 32 V
  • RS stock no. 237-5266
Subtotal (1 unit)
R 79,76(exc. VAT)
In Stock
RS PRO
  • RS stock no. 563-560
Subtotal (1 pack of 10 units)
R 135,32(exc. VAT)
Being discontinued
RS PRO 1A F Glass Cartridge Fuse, 5.2 x 20 mm
  • RS stock no. 563-380
Subtotal (1 pack of 10 units)
R 41,05(exc. VAT)
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 6A, Type C, 240V ac AC, 240 V dc DC, 6 kA Breaking Capacity
  • RS stock no. 265-0177
Subtotal (1 unit)
R 412,42(exc. VAT)
In Stock
Littelfuse
  • RS stock no. 878-1296
  • Mfr. Part No. 0298300.ZXH
Subtotal (1 unit)
R 217,50(exc. VAT)
In Stock
RS PRO Non-Resettable Fuse, Radial 3.15 A, 250 V ac
  • RS stock no. 767-5052
Subtotal (1 pack of 10 units)
R 56,13(exc. VAT)
In Stock
RS PRO 20A
  • RS stock no. 563-762
Subtotal (1 pack of 10 units)
R 18,72(exc. VAT)
In Stock
RS PRO Non-Resettable Fuse, Radial 2 A, 250 V ac
  • RS stock no. 767-5055
Subtotal (1 pack of 10 units)
R 56,13(exc. VAT)
In Stock
Littelfuse
  • RS stock no. 219-6068
  • Mfr. Part No. 0154.250DR
Subtotal (1 pack of 10 units)
R 657,22(exc. VAT)
In Stock
Littelfuse
  • RS stock no. 787-4417
  • Mfr. Part No. 0298250.ZXEH
Subtotal (1 unit)
R 122,55(exc. VAT)
In Stock
ABB, Protecta, XT1N Molded Case Circuit Breaker 3-Pole 160A, Breaking Capacity 36 kA, DIN Rail
  • RS stock no. 831-9175
  • Mfr. Part No. 1SDA067418R1 XT1N 160 TMD 160-1600 3p F F
Subtotal (1 unit)
R 8 319,46(exc. VAT)
In Stock
Littelfuse
  • RS stock no. 787-4126
  • Mfr. Part No. 0287002.PXCN
Subtotal (1 pack of 10 units)
R 63,33(exc. VAT)
In Stock
Phoenix Contact CBM Electronic Circuit Breaker 10A 24V, DIN Rail Type E
  • RS stock no. 890-3806
  • Mfr. Part No. 2905744
Subtotal (1 unit)
R 7 480,51(exc. VAT)
In Stock
Bourns 3.3 A Resettable Fuse, 24 V
  • RS stock no. 245-9164
  • Mfr. Part No. MF-LSMF330/24X-2
Subtotal (1 tape of 10 units)
R 257,51(exc. VAT)
In Stock
Littelfuse
  • RS stock no. 541-3647
  • Mfr. Part No. 0452003.MRL
Subtotal (1 pack of 10 units)
R 385,73(exc. VAT)
In Stock
RS PRO 30A
  • RS stock no. 563-766
Subtotal (1 pack of 10 units)
R 85,93(exc. VAT)
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