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

5 of 999+
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)
Temporarily out of stock
RS PRO 5A Inline Fuse Holder for 5x20mm Fuse, 250V
  • RS Stock No. 284-6487
Each (In a Pack of 10)
€2.253(exc. VAT)
In Stock
ETA Thermal Circuit Breaker - 1658, 25A Current Rating
  • RS Stock No. 288-4022
  • Mfr. Part No. 1658-G21-02-P10-25A
Each
€6.25(exc. VAT)
In Stock
Littelfuse 15A Blue Blade Car Fuse, 32V dc
  • RS Stock No. 787-4120
  • Mfr. Part No. 0287015.PXCN
Each (In a Pack of 10)
€0.269(exc. VAT)
In Stock
Contactum MCB, 3P, 63A Curve D, 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 184-9055
  • Mfr. Part No. CPB1063D3
Each
€21.16(exc. VAT)
In Stock
RS PRO 32A aR Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-066
1 Pack of 10
€178.39(exc. VAT)
In Stock
Eaton 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8386
  • Mfr. Part No. C10G10
Each (In a Pack of 10)
€1.321(exc. VAT)
In Stock
Eaton 2A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1341
  • Mfr. Part No. S506-2-R
Each (In a Pack of 10)
€0.212(exc. VAT)
In Stock
Better World
Schneider Electric Easy 9 EZ9 MCB, 1P, 6A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 850-8599
  • Mfr. Part No. EZ9F16106
Each
€6.44(exc. VAT)
In Stock
Phoenix Contact Surge Protector, ≤1.5kV, DIN Rail Mount
  • RS Stock No. 890-3746
  • Mfr. Part No. 2906101
Each
€67.79(exc. VAT)
In Stock
Siemens SENTRON 1 Phase Busbar, 27mm Pitch
  • RS Stock No. 187-5179
  • Mfr. Part No. 5ST3650
Each
€19.97(exc. VAT)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 1P, 20A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1265
  • Mfr. Part No. 5SY4120-8
Each
€23.72(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 32A Curve D, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 527-9633
  • Mfr. Part No. 2CDS253001R0321 S203-D32
Each
€77.83(exc. VAT)
In Stock
Schneider Electric Enclosure
  • RS Stock No. 466-0527
  • Mfr. Part No. 13441
Each
€74.93(exc. VAT)
In Stock
RS PRO MCB, 2P, 2A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0182
Each
€25.54(exc. VAT)
In Stock
RS PRO 30A Inline Fuse Holder for ATO/ATC 19x18.6mm Fuse, 32V dc
  • RS Stock No. 284-6489
Each (In a Pack of 5)
€4.64(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
Eaton RCD, 6A, 2 Pole, 30mA, Type B
  • RS Stock No. 922-8695
  • Mfr. Part No. 236012 PKNM-6/1N/B/003-A-MW
Each
€224.89(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 3 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2730
  • Mfr. Part No. A9XPH324
Each
€44.49(exc. VAT)
In Stock
RS PRO Earthing Kit
  • RS Stock No. 528-983
Each
€23.53(exc. VAT)
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