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

48615 Products showing for Fuses & Circuit Breakers

3 / 999+
In Stock
Eaton xPole Series Residual Current Circuit Breaker, 40A, 2-Pole, 30 mA, Type A, 10 kA 230V ac
  • RS Stock No. 227-0711
  • Mfr. Part No. 267444 PFGM-40/2/003-A
Subtotal (1 unit)
MYR306.80
MYR306.80/unit
In Stock
RS PRO Industrial Surge Protector, 40 kA, 2.8 kV, DIN Rail
  • RS Stock No. 101-772
Subtotal (1 unit)
MYR267.27
MYR267.27/unit
In Stock
Eaton Cartridge Fuse
  • RS Stock No. 849-5973
  • Mfr. Part No. FP-3
Subtotal (1 unit)
MYR316.34
MYR316.34/unit
In Stock
Siemens Copper Alpha 8GK Busbar
  • RS Stock No. 236-8449
  • Mfr. Part No. 8GK9731-0KK50
Subtotal (1 unit)
MYR194.22
MYR194.22/unit
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 20A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3348
  • Mfr. Part No. A9F54220
Subtotal (1 unit)
MYR563.40
MYR563.40/unit
In Stock
RS PRO NF12 Series Residual Current Circuit Breaker, 25A, 2-Pole, 300 mA, Type A 230V ac
  • RS Stock No. 284-2368
Subtotal (1 unit)
MYR351.70
MYR351.70/unit
In Stock
Mersen Surge Protector, 50 kA, 1800 V, DIN Rail
  • RS Stock No. 361-613
  • Mfr. Part No. 44020405 / K2-4P275-M
Subtotal (1 unit)
MYR890.39
MYR890.39/unit
In Stock
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 16A Current Rating, 2-Pole, 30 mA Trip
  • RS Stock No. 276-8718
  • Mfr. Part No. A9D07216
Subtotal (1 unit)
MYR3,175.60
MYR3,175.60/unit
In Stock
Better World
Schneider Electric Acti9 Acti9 2 Phase Busbar, 415 V ac, 18 mm Pitch
  • RS Stock No. 776-2724
  • Mfr. Part No. A9XPH224
Subtotal (1 unit)
MYR303.31
MYR303.31/unit
Being discontinued
RS PRO 1A F Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-380
Subtotal (1 pack of 10 units)
MYR22.87
MYR2.287/unit
In Stock
Littelfuse 7.5A Brown Car Fuse, 32V dc
  • RS Stock No. 787-4139
  • Mfr. Part No. 028707.5PXCN
Subtotal (1 pack of 10 units)
MYR15.17
MYR1.517/unit
In Stock
Eaton 3A F Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 848-3037
  • Mfr. Part No. BK-GMA-3-R
Subtotal (1 unit)
MYR2.46
MYR2.46/unit
In Stock
Europa EUB1 EUB1 Miniature Circuit Breaker, 1-Pole, 20A, Type B, 240V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 798-2218
  • Mfr. Part No. EUB120B
Subtotal (1 unit)
MYR24.92
MYR24.92/unit
In Stock
Eaton 4A AM Ceramic Cartridge Fuse, 14 x 51 mm
  • RS Stock No. 229-114
  • Mfr. Part No. C14M4 CYLINDRICAL FUSE 14 x 51 4A AM 690V AC
Subtotal (1 pack of 10 units)
MYR125.18
MYR125.18/pack
In Stock
Eaton 2A Ceramic Cartridge Fuse, 14 x 51 mm
  • RS Stock No. 703-8403
  • Mfr. Part No. C14G2
Subtotal (1 pack of 10 units)
MYR136.06
MYR13.606/unit
In Stock
Europa EUB1 EUB1 Miniature Circuit Breaker, 1-Pole, 32A, Type B, 240V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 798-2209
  • Mfr. Part No. EUB132B
Subtotal (1 unit)
MYR27.99
MYR27.99/unit
In Stock
Littelfuse 200A, Panel Automotive Fuse Block, 32V
  • RS Stock No. 878-3245
  • Mfr. Part No. 0498900.TXN
Subtotal (1 unit)
MYR60.11
MYR60.11/unit
In Stock
Schneider Electric EZ9 Series Residual Current Circuit Breaker, 100A, 2-Pole, 30 mA, Type A 230V ac
  • RS Stock No. 654-224
  • Mfr. Part No. EZ9R46291
Subtotal (1 unit)
MYR244.41
MYR244.41/unit
In Stock
Better World
Schneider Electric Acti9 IC60N Miniature Circuit Breaker, 2-Pole, 2A, Type C, 100V, 12 V, 130 V, 220 V, 240 V, 380 V,
  • RS Stock No. 734-9131
  • Mfr. Part No. A9F74202
Subtotal (1 unit)
MYR750.26
MYR750.26/unit
Temporarily out of stock
RS PRO 1 Phase Industrial Surge Protector, 10 kA, 1.1 kV, DIN Rail
  • RS Stock No. 101-748
Subtotal (1 unit)
MYR157.00
MYR157.00/unit
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