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

48322 Products showing for Fuses & Circuit Breakers

7 / 999+
In Stock
Mersen 3.15A Time Lag Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 630-852
  • Mfr. Part No. B085377Q / MI5HT25V3.15/100
Subtotal (1 box of 10 units)
MYR78.58
MYR78.58/box
Stocked by manufacturer
Better World
Schneider Electric Acti9 Acti9 C120 Miniature Circuit Breaker, 3-Pole, 100A, Type C, 440V ac AC, 375 V dc DC, 10 kA
  • RS Stock No. 776-3073
  • Mfr. Part No. A9N18367
Subtotal (1 unit)
MYR734.57
MYR734.57/unit
In Stock
RS PRO 5A FF Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 420-117
Subtotal (1 pack of 10 units)
MYR67.76
MYR6.776/unit
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 1-Pole, 10A, Type B, 240V ac AC, 240 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 265-0162
Subtotal (1 unit)
MYR22.03
MYR22.03/unit
In Stock
Phoenix Contact TCP 4A Thermal Circuit Breaker - 1-Pole, Base, 4A Current Rating, 250V ac, 65 V dc
  • RS Stock No. 801-6909
  • Mfr. Part No. 0712259
Subtotal (1 unit)
MYR89.98
MYR89.98/unit
In Stock
Better World
Schneider Electric Multi9 Multi9 Miniature Circuit Breaker, 1-Pole, 6A, Type C, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 219-9117
  • Mfr. Part No. M9F22106
Subtotal (1 unit)
MYR207.58
MYR207.58/unit
Stocked by manufacturer
Siemens, SENTRON, 3VA5 Molded Case Circuit Breaker 4-Pole 150A, Breaking Capacity 7 kA, Fixed
  • RS Stock No. 147-914
  • Mfr. Part No. 3VA5215-5EF41-0AA0
Subtotal (1 unit)
MYR8,440.18
MYR8,440.18/unit
Temporarily out of stock
Wickmann 20 A Panel Mount Fuse Holder for 3AG/AB, 25 V
  • RS Stock No. 174-0734
  • Mfr. Part No. 03420004HXL
Subtotal (1 pack of 5 units)
MYR94.38
MYR18.876/unit
Temporarily out of stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 10A, Type C, 240V ac AC, 240 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 265-0172
Subtotal (1 unit)
MYR94.31
MYR94.31/unit
In Stock
Eaton xPole PL Miniature Circuit Breaker, 1-Pole, 10A, Type C, 48 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 864-4318
  • Mfr. Part No. 242202 PLSM-C10-MW
Subtotal (1 unit)
MYR155.25
MYR155.25/unit
Stocked by manufacturer
ABB Phase Barrier for use with S6, T6, S7
  • RS Stock No. 250-4520
  • Mfr. Part No. 1SDA050696R1
Subtotal (1 unit)
MYR302.58
MYR302.58/unit
In Stock
Littelfuse 10A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 541-4533
  • Mfr. Part No. 0218010.MXP
Subtotal (1 pack of 10 units)
MYR64.57
MYR6.457/unit
In Stock
Eaton 10A Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 703-8386
  • Mfr. Part No. C10G10
Subtotal (1 pack of 10 units)
MYR71.29
MYR7.129/unit
In Stock
RS PRO 5A T Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 668-6089
Subtotal (1 pack of 10 units)
MYR30.45
MYR3.045/unit
In Stock
RS PRO 8A T Ceramic Cartridge Fuse, 5.2 x 20 mm
  • RS Stock No. 563-598
Subtotal (1 pack of 10 units)
MYR17.25
MYR1.725/unit
In Stock
Eaton 2A F Ceramic Cartridge Fuse, 6.3 x 25 mm
  • RS Stock No. 412-554
  • Mfr. Part No. TDC180-2A
Subtotal (1 pack of 10 units)
MYR27.60
MYR2.76/unit
Being discontinued
RS PRO 8A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-429
Subtotal (1 pack of 10 units)
MYR13.48
MYR1.348/unit
Stocked by manufacturer
Better World
Siemens SENTRON Series Residual Current Circuit Breaker, 25A, 2-Pole, 300 mA, Type F, 10 kA 400V ac
  • RS Stock No. 211-9670
  • Mfr. Part No. 5SV3612-3
Subtotal (1 unit)
MYR899.68
MYR899.68/unit
Stocked by manufacturer
Eaton 50A Ceramic Cartridge Fuse, 14 x 51 mm
  • RS Stock No. 229-202
  • Mfr. Part No. C14M50S
Subtotal (1 pack of 10 units)
MYR444.17
MYR444.17/pack
In Stock
ABB F200 Series Residual Current Circuit Breaker, 63A, 4-Pole, 300 mA, Type AC, 0.3 A 400V ac
  • RS Stock No. 537-7462
  • Mfr. Part No. 2CSF204001R3630 F204 AC-63/0,3
Subtotal (1 unit)
MYR937.64
MYR937.64/unit
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