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

46604 Products showing for Fuses & Circuit Breakers

14 / 999+
Eaton 32A Neutral Link, 10mm x 38mm
  • RS Stock No. 703-8522
  • Mfr. Part No. C10NL
Each (In a Pack of 10)
MYR12.094
Better World
Siemens 5SV3 RCCB, 25A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 202-7169
  • Mfr. Part No. 5SV3312-6KL
Each
MYR305.43
Mersen 25A D02 Neozed Fuse, gG, 400V ac
  • RS Stock No. 377-0279
  • Mfr. Part No. W213160
Each (In a Pack of 5)
MYR9.656
Siemens 2A D01 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-0907
  • Mfr. Part No. 5SE2302
Each (In a Pack of 10)
MYR10.218
Phoenix Contact CM 2-PA-PT/PLT Adapter for use with PLT-SEC, PT
  • RS Stock No. 131-459
  • Mfr. Part No. 2905284
Each
MYR4,813.62
RS PRO 5A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9816
Each (In a Pack of 10)
MYR2.636
Siemens Sentron Copper Rod for use with Busbar
  • RS Stock No. 228-8263
  • Mfr. Part No. 8WC5123
Each
MYR387.56
Socomec 16A F Cartridge Fuse, 10 x 38mm
  • RS Stock No. 223-2795
  • Mfr. Part No. 60130016
Each (In a Pack of 10)
MYR6.12
ABB 8 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1899
  • Mfr. Part No. 1SL1201A00 65P08X12
Each
MYR153.23
Limitor Thermal Fuse +115°C 5 A, 250V ac
  • RS Stock No. 124-5059
  • Mfr. Part No. A2-5AF
Each (In a Pack of 5)
MYR6.078
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 55 kA
  • RS Stock No. 209-6941
  • Mfr. Part No. 3VA2325-5HL32-0AA0
Each
MYR7,073.81
Littelfuse 5A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 541-3041
  • Mfr. Part No. 0313005.MXP
Each (In a Pack of 10)
MYR4.941
Better World
Siemens Sentron 5SY4 MCB, 3P, 6A Curve C, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 772-1366
  • Mfr. Part No. 5SY4306-7
Each
MYR507.90
Contactum MCB, 3P, 32A Curve D, 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 184-9045
  • Mfr. Part No. CPB1032D3
Each
MYR94.69
RS PRO SMD Non Resettable Fuse 100mA, 125V
  • RS Stock No. 182-4086P
Each (Supplied in a Box)
MYR4.296
Better World
Siemens RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Sentron Range
  • RS Stock No. 151-1216
  • Mfr. Part No. 5SU1356-7KK16
Each
MYR709.42
Eaton 8A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-0972
  • Mfr. Part No. S500-8-R
Each (In a Pack of 10)
MYR0.755
Siemens 20A DII Diazed Fuse, E27 Thread Size, gR, 500V
  • RS Stock No. 203-3953
  • Mfr. Part No. 5SD430
Each (In a Pack of 5)
MYR56.786
Littelfuse SMD Non Resettable Fuse 1.5A, 125V ac/dc
  • RS Stock No. 541-3394
  • Mfr. Part No. 045101.5MRL
Each (In a Pack of 10)
MYR5.92
Better World
Schneider Electric RCBO, 10A Current Rating, 1P+N Poles, Type AB, Easy9 Range
  • RS Stock No. 850-8644
  • Mfr. Part No. EZ9D16810
Each
MYR163.60
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