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

47206 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
Schneider Electric Multi 9 C60SP MCB, 1P, 16A Curve B, 415V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 211-2333
  • Mfr. Part No. M9F21116
Subtotal (1 unit)
HK$104.40
In Stock
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8530
Subtotal (1 unit)
HK$684.70
In Stock
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8537
Subtotal (1 unit)
HK$650.00
In Stock
Schurter 4A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 830-4234
  • Mfr. Part No. 8020.5017.G
Subtotal (1 pack of 10 units)
HK$68.40
Being discontinued
RS PRO 1A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6023
Subtotal (1 pack of 10 units)
HK$30.90
In Stock
RS PRO 20A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 209-9333
Subtotal (1 pack of 10 units)
HK$167.00
In Stock
Schneider Electric Acti 9 iC60H MCB, 2P, 10A Curve B, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3199
  • Mfr. Part No. A9F53210
Subtotal (1 unit)
HK$599.20
In Stock
RS PRO 3.15A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3414
Subtotal (1 pack of 10 units)
HK$28.00
Temporarily out of stock
Eaton MCCB 1P 100A, Breaking Capacity 80 kA, Fixed Mount
  • RS Stock No. 628-8060
  • Mfr. Part No. 259141 PN1-100
Subtotal (1 box of 1 unit)
HK$2,867.00
In Stock
Bourns 1.85A Resettable Fuse, 15V
  • RS Stock No. 245-9147
  • Mfr. Part No. MF-LSMF185X-2
Subtotal (1 tape of 10 units)
HK$30.00
In Stock
Eaton 32A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 703-8462
  • Mfr. Part No. C22G32
Subtotal (1 pack of 10 units)
HK$235.70
In Stock
Bourns 1.5A Resettable Fuse, 15V
  • RS Stock No. 691-7591
  • Mfr. Part No. MF-SMDF150-2
Subtotal (1 pack of 5 units)
HK$18.00
In Stock
Littelfuse 2A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4628
  • Mfr. Part No. 0216002.MXP
Subtotal (1 pack of 10 units)
HK$100.30
In Stock
Eaton 20A British Standard Fuse, A1, 550V ac, 42.5mm
  • RS Stock No. 139-883
  • Mfr. Part No. NITD20M25
Subtotal (1 pack of 5 units)
HK$139.20
In Stock
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti 9 Range
  • RS Stock No. 790-9305
  • Mfr. Part No. A9D11820
Subtotal (1 unit)
HK$1,358.30
In Stock
Eaton 1A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1442
  • Mfr. Part No. S501-1-R
Subtotal (1 pack of 10 units)
HK$42.80
In Stock
Bourns 1.5A Resettable Fuse, 15V
  • RS Stock No. 647-8112
  • Mfr. Part No. MF-SM150-2
Subtotal (1 pack of 10 units)
HK$27.30
In Stock
Schneider Electric Acti 9 iC60H MCB, 1P, 10A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3293
  • Mfr. Part No. A9F54110
Subtotal (1 unit)
HK$374.70
Being discontinued
RS PRO 2.5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-627
Subtotal (1 pack of 10 units)
HK$22.80
In Stock
Mersen 315mA FA Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 188-6546
  • Mfr. Part No. Z084018
Subtotal (1 pack of 10 units)
HK$295.00
1
2
3
2361
Results per page

Related links