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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

52664 Products showing for Fuses & Circuit Breakers

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In Stock
Schneider Electric Multi9 Multi9 Miniature Circuit Breaker, 2-Pole, 20A, Type C, 10 kA Breaking Capacity
  • RS Stock No. 219-9129
  • Mfr. Part No. M9F22220
Subtotal (1 unit)
£85.53(exc. VAT)
£85.53/unit
In Stock
Europa EUC3P EUC3P Miniature Circuit Breaker, 3-Pole, 6A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6588
  • Mfr. Part No. EUC3P6C
Subtotal (1 unit)
£22.40(exc. VAT)
£22.40/unit
In Stock
Eaton 2A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 537-1341
  • Mfr. Part No. S506-2-R
Subtotal (1 pack of 10 units)
£1.77(exc. VAT)
£1.77/pack
Temporarily out of stock
ABB F200 Series Residual Current Circuit Breaker, 25A, 2-Pole, 30 mA, Type A, 1 kA 277V ac
  • RS Stock No. 177-5063
  • Mfr. Part No. 2CSF202199R1250 F202 A-25/0,03 110V
Subtotal (1 unit)
£149.56(exc. VAT)
£149.56/unit
In Stock
Contactum Residual Current Circuit Breaker with Overload Protection, 16A Current Rating, 1-Pole, 30 mA Trip Sensitivity,
  • RS Stock No. 240-6384
  • Mfr. Part No. CCPBR0616AB
Subtotal (1 unit)
£23.70(exc. VAT)
£23.70/unit
In Stock
Schneider Electric Multi9 Multi9 Miniature Circuit Breaker, 1-Pole, 5A, Type B, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 256-6750
  • Mfr. Part No. M9F21105
Subtotal (1 unit)
£33.75(exc. VAT)
£33.75/unit
In Stock
RS PRO 3 Phase Industrial Surge Protector, 50 kA, 1.5 kV, DIN Rail
  • RS Stock No. 101-741
Subtotal (1 unit)
£138.11(exc. VAT)
£138.11/unit
In Stock
Schurter T11 T11 Thermal Circuit Breaker -, 6A Current Rating 1-Pole, Panel
  • RS Stock No. 284-5855
  • Mfr. Part No. 4400.005
Subtotal (1 unit)
£6.51(exc. VAT)
£6.51/unit
In Stock
Eaton xEffect xEffect Miniature Circuit Breaker, 3-Pole, 20A, Type C, 400V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 624-0440
  • Mfr. Part No. 278874 FAZ-C20/3
Subtotal (1 unit)
£100.79(exc. VAT)
£100.79/unit
Temporarily out of stock
Eaton xEffect xEffect Miniature Circuit Breaker, 3-Pole, 2A, Type C, 400V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4586
  • Mfr. Part No. 239122 FAZ6-C2/3
Subtotal (1 unit)
£124.91(exc. VAT)
£124.91/unit
In Stock
Schneider Electric Linergy Linergy 3 Phase Busbar, 690 V, 45 mm Pitch
  • RS Stock No. 608-8220
  • Mfr. Part No. GV2G345
Subtotal (1 unit)
£16.48(exc. VAT)
£16.48/unit
Temporarily out of stock
nVent ERIFLEX Brass ERIFLEX 56866 Busbar
  • RS Stock No. 277-6178
  • Mfr. Part No. 568662
Subtotal (1 unit)
£24.23(exc. VAT)
£24.23/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 25A, Type D, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3571
  • Mfr. Part No. A9F55325
Subtotal (1 unit)
£127.00(exc. VAT)
£127.00/unit
In Stock
Eaton Lockable Handle for use with N(S)2(-4) Series, PN2(-4) Series, NZM2(-4) Switch
  • RS Stock No. 537-5719
  • Mfr. Part No. 260174 NZM2-XTVDV
Subtotal (1 unit)
£97.41(exc. VAT)
£97.41/unit
Temporarily out of stock
RS Better World
Siemens 5SV3321 Series Residual Current Circuit Breaker, 16A, 2-Pole, 30 mA, Type B, 10 kA 230V ac
  • RS Stock No. 231-8373
  • Mfr. Part No. 5SV3321-4
Subtotal (1 unit)
£458.59(exc. VAT)
£458.59/unit
In Stock
ABB SN201L SN201 Miniature Circuit Breaker, 1-Pole, 2A, Type C, 230V ac AC, 4.5 kA Breaking Capacity
  • RS Stock No. 191-9456
  • Mfr. Part No. 2CSS245102R0024 SN201 L C2-L
Subtotal (1 unit)
£14.26(exc. VAT)
£14.26/unit
In Stock
Eaton 160A British Standard Fuse B2 415V ac, 111 mm
  • RS Stock No. 156-8692
  • Mfr. Part No. DD160
Subtotal (1 unit)
£32.23(exc. VAT)
£32.23/unit
In Stock
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 20A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 790-9213
  • Mfr. Part No. A9D31820
Subtotal (1 unit)
£159.81(exc. VAT)
£159.81/unit
In Stock
Schneider Electric 110V ac/dc Remote Tripping Device Circuit Trip for use with LRD Series, LR3D Series
  • RS Stock No. 744-6973
  • Mfr. Part No. LAD703F
Subtotal (1 unit)
£74.58(exc. VAT)
£74.58/unit
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 6A, Type C, 240V ac AC, 240 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 265-0177
Subtotal (1 unit)
£16.87(exc. VAT)
£16.87/unit
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