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

47266 Products showing for Fuses & Circuit Breakers

9 of 999+
In Stock
Littelfuse 210A Base Mount Fuse Holder for ATO Fuse
  • RS Stock No. 894-9622
  • Mfr. Part No. PDM61001ZXM
Each
HK$199.70
In Stock
Littelfuse 20A Panel Mount Fuse Holder for 10 x 38mm Fuse, 600V ac
  • RS Stock No. 769-3753
  • Mfr. Part No. 05710027L
Each
HK$200.90
In Stock
Eaton 100A Rail Mount Fuse Holder for A3 Fuse, 1P, 690V ac
  • RS Stock No. 418-489
  • Mfr. Part No. CM100F
Each
HK$448.50
In Stock
Wickmann 30A Inline Fuse Holder, 32V dc
  • RS Stock No. 170-6112
  • Mfr. Part No. 0FHM0002ZXJ
Each
HK$286.20
In Stock
Littelfuse 10A Inline Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 878-3882
  • Mfr. Part No. 01500274Z
Each (In a Pack of 10)
HK$17.17
In Stock
Eaton 63A Rail Mount Fuse Holder for A3 Fuse, 1P, 690V ac
  • RS Stock No. 413-923
  • Mfr. Part No. RS63H
Each
HK$1,135.20
In Stock
Eaton 32A Rail Mount Fuse Holder for A2 Fuse, 1P, 660V ac
  • RS Stock No. 418-467
  • Mfr. Part No. CM32F
Each
HK$160.30
Last RS stock
Schurter 10A T Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 209-9418
  • Mfr. Part No. 8020.2050
Each
HK$73.60
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 236-6710
  • Mfr. Part No. 1SDA068356R1 XT4H 160 TMA 160A 3P+N FF
Each
HK$10,190.90
In Stock
Better World
Schneider Electric Acti9 iIDK RCCB, 25A, 2 Pole, 30mA, Type AC, 220 → 240V ac
  • RS Stock No. 238-3454
  • Mfr. Part No. A9R55225
Each
HK$898.10
In Stock
Eaton 10A Red, White Fast Acting Car Fuse, 60 V dc, 125V ac With Indicator
  • RS Stock No. 848-3879
  • Mfr. Part No. GMT-10A
Each
HK$155.30
In Stock
RS PRO 6.3A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 247-3977
Each (In a Pack of 10)
HK$9.59
Temporarily out of stock
Eaton 4A Cartridge Fuse, 440 x 41.3mm
  • RS Stock No. 228-882
  • Mfr. Part No. 38CAV4E
1 Pack of 3
HK$9,240.00
In Stock
RS PRO 6A Slotted Tag Fuse, A1, 250 V dc, 415V ac, 44.5mm
  • RS Stock No. 221-3703
1 Bag of 5
HK$163.69
In Stock
SIBA 2A F Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3391
  • Mfr. Part No. 70-010-04/2A
Each (In a Pack of 5)
HK$50.58
In Stock
Eaton 35A DIII Bottle Fuse, 500V
  • RS Stock No. 228-741
  • Mfr. Part No. 35D33 FUSE-D3 35A T GL/GG 500VAC E33
1 Pack of 5
HK$111.90
In Stock
ABB Tmax XT Auxiliary Contact for use with Circuit Breaker
  • RS Stock No. 232-0179
  • Mfr. Part No. 1SDA066422R1 AUX 250V XT1..XT4
Each
HK$275.50
In Stock
Littelfuse SMD Non Resettable Fuse 500mA, 125V ac/dc
  • RS Stock No. 219-6074
  • Mfr. Part No. 0154.500DR
Each (In a Pack of 10)
HK$13.65
Temporarily out of stock
Schurter Surface Mount Fuse 1A, 250V ac
  • RS Stock No. 270-7953
  • Mfr. Part No. 3404.2416.11
Each
HK$6.60
In Stock
Europa EUC1P EUB MCB, 1P, 1A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6459
  • Mfr. Part No. EUC1P1B
Each
HK$76.80
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