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
Fuses - PCB
Fuses - PCB

49996 Products showing for Fuses & Circuit Breakers

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1 / 999+
Temporarily out of stock
RS PRO 4A F Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-346
Subtotal (1 pack of 10 units)
MYR14.79
MYR1.479/unit
Stocked by manufacturer
Schneider Electric A9Z Series Residual Current Circuit Breaker, 63A, 4-Pole, 100 mA, Type A-SI, 1500 A 415V ac
  • RS Stock No. 212-297
  • Mfr. Part No. A9Z32463
Subtotal (1 unit)
MYR3,087.97
MYR3,087.97/unit
In Stock
Hager MJT Miniature Circuit Breaker, 2-Pole, 10A, Type C, 400V ac AC, 253 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 144-4949
  • Mfr. Part No. MJT710
Subtotal (1 unit)
MYR163.13
MYR163.13/unit
In Stock
Schneider Electric A9Z Series Residual Current Circuit Breaker, 40A, 4-Pole, 100 mA, Type A-SI, 1500 A 415V ac
  • RS Stock No. 211-967
  • Mfr. Part No. A9Z32440
Subtotal (1 unit)
MYR1,456.95
MYR1,456.95/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 63A, Type B, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3243
  • Mfr. Part No. A9F53363
Subtotal (1 unit)
MYR928.50
MYR928.50/unit
In Stock
ABB System Pro M Compact SU200 M Miniature Circuit Breaker, 2-Pole, 16A, Type C, 440V ac AC, 440 V dc DC, 10 kA Breaking
  • RS Stock No. 231-9739
  • Mfr. Part No. 2CDS272337R0164 SU202M-C16
Subtotal (1 box of 1 unit)
MYR882.60
MYR882.60/box
Temporarily out of stock
Eaton 3 Phase Surge Protector, 15 kA, 415 V ac, DIN Rail
  • RS Stock No. 847-3677
  • Mfr. Part No. 102036 FAZ-XAA-NA110-415VAC
Subtotal (1 unit)
MYR231.39
MYR231.39/unit
In Stock
Siemens Copper Alpha 8GK Busbar
  • RS Stock No. 226-0832
  • Mfr. Part No. 8GK9733-0KK20
Subtotal (1 unit)
MYR187.62
MYR187.62/unit
In Stock
RS PRO 8A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 610-9838
Subtotal (1 pack of 10 units)
MYR26.36
MYR2.636/unit
Limited stock
Eaton 5A F Ceramic Cartridge Fuse, 6.3 x 25 mm
  • RS Stock No. 412-576
  • Mfr. Part No. TDC180-5A
Subtotal (1 pack of 10 units)
MYR43.14
MYR4.314/unit
In Stock
Eaton 16A Centred Tag Fuse NH000 500V ac
  • RS Stock No. 703-8623
  • Mfr. Part No. 16NHG000B
Subtotal (1 unit)
MYR38.82
MYR38.82/unit
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 16A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0181
Subtotal (1 unit)
MYR106.99
MYR106.99/unit
In Stock
RS Better World
ABB ComPact Home SH200 Miniature Circuit Breaker, 2-Pole, 6A, Type C, 440V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 231-9655
  • Mfr. Part No. 2CDS212001R0064 SH202-C 6
Subtotal (1 box of 1 unit)
MYR271.85
MYR271.85/box
In Stock
RS PRO Industrial Surge Protector, 40 kA, 2.8 kV, DIN Rail
  • RS Stock No. 101-772
Subtotal (1 unit)
MYR271.09
MYR271.09/unit
In Stock
ABB 32A Centred Tag Fuse NH000 500V
  • RS Stock No. 779-9956
  • Mfr. Part No. OFAF000H32 1SCA022627R0910
Subtotal (1 unit)
MYR33.05
MYR33.05/unit
In Stock
RS PRO Earthing Kit
  • RS Stock No. 528-983
Subtotal (1 unit)
MYR130.27
MYR130.27/unit
Last RS stock
Mersen 10A FF Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 136-0600
  • Mfr. Part No. A1014576 / FR10GR69V10
Subtotal (1 unit)
MYR66.74
MYR66.74/unit
In Stock
Littelfuse Automotive Fuse Kit
  • RS Stock No. 219-9562
  • Mfr. Part No. 00950011XXN
Subtotal (1 unit)
MYR353.55
MYR353.55/unit
Stocked by manufacturer
ABB F200 Series Residual Current Circuit Breaker, 40A, 4-Pole, 100 mA, Type AC, 0.1 A 230V ac
  • RS Stock No. 225-6119
  • Mfr. Part No. 2CSF204001R2400 F204 AC-40/0,1
Subtotal (1 unit)
MYR915.91
MYR915.91/unit
In Stock
Siemens 16A D2 Diazed Fuse, gG, 500V ac/dc
  • RS Stock No. 167-680
  • Mfr. Part No. 5SB2611
Subtotal (1 pack of 25 units)
MYR111.62
MYR111.62/pack
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