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
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses

50989 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 50A Curve D, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 527-9661
  • Mfr. Part No. 2CDS253001R0501 S203-D50
Each
€85.22(exc. VAT)
In Stock
RS PRO Rail Mount Fuse Holder
  • RS Stock No. 501-871
Each
€11.58(exc. VAT)
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 5A, 250V ac
  • RS Stock No. 767-5064
Each (In a Pack of 10)
€0.38(exc. VAT)
In Stock
RS PRO BS 1362, F, T Fuse Kit
  • RS Stock No. 893-8546
Each
€63.10(exc. VAT)
Temporarily out of stock
ABB SU200 M MCB, 3P, 35A, Type Z, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-206
  • Mfr. Part No. 2CDS273337R0548
Each
€250.52(exc. VAT)
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 4A, 250V
  • RS Stock No. 767-5162
Each (In a Pack of 10)
€0.279(exc. VAT)
Being discontinued
RS PRO 1A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-380
Each (In a Pack of 10)
€0.331(exc. VAT)
Being discontinued
RS PRO 500mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-463
Each (In a Pack of 10)
€0.331(exc. VAT)
In Stock
Europa EUC1P EUC MCB, 1P, 2A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6496
  • Mfr. Part No. EUC1P2C
Each
€8.31(exc. VAT)
In Stock
RS PRO 30A Rail Mount Fuse Holder for 5 x 20mm Fuse, 1P, 500V
  • RS Stock No. 242-0497
1 Bag of 10
€36.50(exc. VAT)
In Stock
Europa EUC1P EUC MCB, 1P, 1A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6493
  • Mfr. Part No. EUC1P1C
Each
€6.74(exc. VAT)
In Stock
RS PRO 3A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 668-5963
Each (In a Pack of 10)
€0.391(exc. VAT)
In Stock
RS PRO MCB, 1P, 10A Curve C, 240 → 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 265-0188
Each
€9.71(exc. VAT)
In Stock
RS PRO MCB, 1P, 3A Curve C, 240 → 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 265-0191
Each
€10.28(exc. VAT)
In Stock
Eaton 13A F Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 412-605
  • Mfr. Part No. TDC180-13A
Each (In a Pack of 10)
€0.636(exc. VAT)
Temporarily out of stock
RS PRO 2A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-722
Each (In a Pack of 10)
€0.339(exc. VAT)
In Stock
Better World
Siemens Sentron 5SY7 MCB, 1P, 3A Curve C, 230V AC, 15 kA Breaking Capacity
  • RS Stock No. 622-0165
  • Mfr. Part No. 5SY7103-7
Each
€32.35(exc. VAT)
Being discontinued
RS PRO 5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-532
Each (In a Pack of 10)
€0.331(exc. VAT)
In Stock
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8530
Each
€74.62(exc. VAT)
In Stock
RS PRO Earthing Kit
  • RS Stock No. 528-983
Each
€23.53(exc. VAT)
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