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

47265 Products showing for Fuses & Circuit Breakers

60 of 999+
Bulgin 6.3A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 413-771
  • Mfr. Part No. FX0365
Each
HK$115.30
Eaton 400A Rail Mount Fuse Holder, 1P, 460 V dc, 660 → 690V ac
  • RS Stock No. 182-1385
  • Mfr. Part No. RS400H
Each
HK$27,681.10
Littelfuse Inline Fuse Holder for ATO Fuse, 32V dc
  • RS Stock No. 787-4372
  • Mfr. Part No. 277.6306.0001
Each
HK$105.60
Eaton 10A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 250V ac
  • RS Stock No. 233-0581
  • Mfr. Part No. BK1-HTJ-605I
Each (In a Pack of 10)
HK$30.64
Bulgin 13A Panel Mount Fuse Holder for 6.3 x 25mm Fuse, 1P, 250V ac
  • RS Stock No. 414-099
  • Mfr. Part No. FX0416/S
Each
HK$77.70
Littelfuse 60A Inline Fuse Holder for Maxi Fuse
  • RS Stock No. 894-9578
  • Mfr. Part No. 01520001U
Each
HK$63.40
Eaton 30A Rail Mount Fuse Holder for 10 x 38mm Fuse, 2P, 600V ac
  • RS Stock No. 182-1655
  • Mfr. Part No. CHCC2DU
Each
HK$543.00
Littelfuse 16A Panel Mount Fuse Holder for 5 x 20, 6.3 x 32mm Fuse, 1P, 250V ac
  • RS Stock No. 787-4319
  • Mfr. Part No. 80000000105
Each (In a Pack of 5)
HK$20.84
Schurter 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 344-5591
  • Mfr. Part No. 0031.1081
Each (In a Pack of 5)
HK$36.36
Schurter 16A Panel Mount Fuse Holder for 6.3 x 32, 5 x 20mm Fuse, 1P, 500V ac
  • RS Stock No. 866-3595
  • Mfr. Part No. 0031.2320
Each
HK$87.00
Bulgin 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 359-3381
  • Mfr. Part No. FX0454/S
Each (In a Pack of 5)
HK$47.58
ETA ESX10 Electronic Circuit breaker 0.5A 24V ESX10-T, 1 channels , Plug-In Mounting
  • RS Stock No. 210-2141
  • Mfr. Part No. ESX10-TB-114-DC24V-0.5A-E
Each
HK$765.10
Better World
Siemens Sentron 5SY4 MCB, 3P, 63A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 124-3182
  • Mfr. Part No. 5SY4363-7
Each
HK$834.10
Schneider Electric Mureva Enclosure for Plug and Socket
  • RS Stock No. 119-363
  • Mfr. Part No. 13153M
Each
HK$1,251.77
Littelfuse 150A Grey BF1 Car Fuse, 32V dc
  • RS Stock No. 431-6769
  • Mfr. Part No. 153.5631.6151
1 Pack of 5
HK$151.10
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 70 kA
  • RS Stock No. 210-1617
  • Mfr. Part No. 3VA1110-6EF32-0AA0
Each
HK$3,886.60
RS PRO MCB, 1P, 3A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0200
Each
HK$82.40
ABB High Performance S800C MCB, 3P, 100A Curve C, 690V AC, 50 kA Breaking Capacity
  • RS Stock No. 231-9580
  • Mfr. Part No. 2CCG001233R0001
Each
HK$1,671.10
Eaton 630A Centred Tag Fuse, NH3, 500V ac
  • RS Stock No. 703-8768
  • Mfr. Part No. 630NHG3B
Each
HK$2,226.70
ABB F200 RCCB, 40A, 4 Pole, 30mA, 400V ac
  • RS Stock No. 176-9636
  • Mfr. Part No. F204F-40/0.03
Each
HK$6,959.66
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