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

46579 Products showing for Fuses & Circuit Breakers

101 / 999+
ETA Thermal Circuit Breaker - 3120-N 2 Pole 50 V DC, 240 V AC Voltage Rating, 10A Current Rating
  • RS Stock No. 210-2062
  • Mfr. Part No. 3120-N521-H7T1-W01D-10A
Each
MYR206.12
Schneider Electric, ComPacT MCCB 3P 80A, Fixed Mount
  • RS Stock No. 260-9435
  • Mfr. Part No. C10F3TM080
Each
MYR3,624.78
ABB DDA200 RCD, 63A, 4 Pole, 300mA, Type AC
  • RS Stock No. 183-3656
  • Mfr. Part No. 2CSB204001R3630
Each
MYR1,114.71
Schneider Electric Acti9 iC60 RCCB, 32A, 4 Pole, 300mA, Type C, 380 → 415V ac
  • RS Stock No. 110-281
  • Mfr. Part No. A9D55432
Each
MYR8,907.58
Better World
Schneider Electric 12 → 24V ac/dc Shunt Trip Circuit Trip for use with ARA, ic60 MCB, IDPN Vigi, ild Double
  • RS Stock No. 791-2812
  • Mfr. Part No. A9A26948
Each
MYR478.91
Rittal SZ Busbar
  • RS Stock No. 230-4854
  • Mfr. Part No. 2364000
Each
MYR610.09
Better World
Schneider Electric, NSX Range MCCB 4P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 849-4084
  • Mfr. Part No. LV429690
Each
MYR3,275.29
Eaton 2A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 851-0801
  • Mfr. Part No. FNQ-R-2
Each
MYR125.46
RS PRO 20A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 209-9333
Each (In a Pack of 10)
MYR12.367
ABB Tmax T Shunt Opening Release for use with MCCB
  • RS Stock No. 232-0105
  • Mfr. Part No. 1SDA054863R1 24VAC/DC T4-6
Each
MYR815.23
Schneider Electric Acti9 Acti9 Reflex MCB, 2P, 40A Curve B, 230V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 354-488
  • Mfr. Part No. A9C61240
Each
MYR1,922.86
Europa EUR1 RCCB, 63A, 4 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 210-4757
  • Mfr. Part No. EUR163.30/4A
Each
MYR389.13
Schneider Electric EZ9 RCCB, 100A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-224
  • Mfr. Part No. EZ9R46291
Each
MYR244.41
Wickmann 10A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 174-0671
  • Mfr. Part No. 0313010.MX250P
Each (In a Pack of 10)
MYR4.604
WJ Furse Earth Stud W. 157.48mm x 25.4mm H. 15.748mm
  • RS Stock No. 124-2513
  • Mfr. Part No. 7TCA083160R0054 ST200
Each (In a Pack of 10)
MYR107.967
Better World
Schneider Electric, Compact MCCB 4P 80A, Breaking Capacity 50 kA, Clip-On
  • RS Stock No. 178-7760
  • Mfr. Part No. LV426476
Each
MYR3,181.52
Better World
Schneider Electric RCD, 32A Current Rating, 1P+N Poles, Type AB, Easy9 Range
  • RS Stock No. 850-8669
  • Mfr. Part No. EZ9D16832
Each
MYR170.69
ABB S204L MCB, 4P, 20A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 201-397
  • Mfr. Part No. 2CDS244701R0204
Each
MYR1,087.82
Better World
Schneider Electric Acti9 iDT40 RCD, 40A, 1 Pole, 300mA, Type A-SI, 230V ac
  • RS Stock No. 239-9998
  • Mfr. Part No. A9Y65640
Each
MYR2,118.07
SIBA 5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3251
  • Mfr. Part No. 70-007-33/5A
Each (In a Pack of 10)
MYR1.379
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