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

51034 Products showing for Fuses & Circuit Breakers

5 of 999+
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 32A, Type D, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3574
  • Mfr. Part No. A9F55332
Subtotal (1 unit)
£112.28(exc. VAT)
In Stock
nVent ERIFLEX Brass ERIFLEX 56866 Busbar
  • RS Stock No. 277-6178
  • Mfr. Part No. 568662
Subtotal (1 unit)
£24.23(exc. VAT)
In Stock
Better World
ABB System Pro M Compact System Pro M Compact Miniature Circuit Breaker, 1-Pole, 6A, Type D, 253V ac AC, 72 V dc DC, 6
  • RS Stock No. 527-9453
  • Mfr. Part No. 2CDS251001R0061 S201-D6
Subtotal (1 unit)
£17.22(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 2A, Type C, 100V, 12 V, 133 V, 220 V, 240 V, 60 V AC,
  • RS Stock No. 791-3284
  • Mfr. Part No. A9F54102
Subtotal (1 unit)
£32.79(exc. VAT)
In Stock
Schurter 3.15A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 167-8092
  • Mfr. Part No. 0034.3122
Subtotal (1 pack of 10 units)
£4.15(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 40A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3354
  • Mfr. Part No. A9F54240
Subtotal (1 unit)
£82.79(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 50A, Type C, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3316
  • Mfr. Part No. A9F54150
Subtotal (1 unit)
£31.65(exc. VAT)
In Stock
Littelfuse 3A Purple Car Fuse, 32V dc
  • RS Stock No. 787-4142
  • Mfr. Part No. 0287003.PXCN
Subtotal (1 pack of 10 units)
£2.55(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200M Miniature Circuit Breaker, 2-Pole, 10A, Type C, 440V ac AC, 125 V dc DC, 10 kA Breaking
  • RS Stock No. 132-071
  • Mfr. Part No. 2CDS272001R0104 S202M-C10
Subtotal (1 unit)
£52.80(exc. VAT)
In Stock
RS PRO MCB/RCBO Lock for use with Main Isolator, RCCB, RCBO, MCB
  • RS Stock No. 798-2233
Subtotal (1 pack of 3 units)
£5.68(exc. VAT)
In Stock
RS PRO 5A F Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-340
Subtotal (1 pack of 10 units)
£2.56(exc. VAT)
In Stock
Better World
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 6A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 790-9260
  • Mfr. Part No. A9D11806
Subtotal (1 unit)
£148.47(exc. VAT)
In Stock
ABB System Pro M Compact S200M Miniature Circuit Breaker, 3-Pole, 6A, Type C, 440V ac AC, 125 V dc DC, 10 kA Breaking
  • RS Stock No. 535-4251
  • Mfr. Part No. 2CDS273001R0064 S203M-C6
Subtotal (1 unit)
£84.56(exc. VAT)
In Stock
SIBA 6.3A T Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 418-9595
  • Mfr. Part No. 70-059-61 6.3A
Subtotal (1 pack of 10 units)
£6.06(exc. VAT)
In Stock
Siemens 100A NH Fuse NH000 500V ac
  • RS Stock No. 396-102
  • Mfr. Part No. 3NA3830
Subtotal (1 pack of 3 units)
£57.90(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 63A, Type C, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3310
  • Mfr. Part No. A9F54163
Subtotal (1 unit)
£33.88(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 1-Pole, 4A, Type C, 253V ac AC, 72 V dc DC, 6 kA Breaking
  • RS Stock No. 746-7652
  • Mfr. Part No. 2CDS251001R0044 S201-C4
Subtotal (1 unit)
£16.93(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 1-Pole, 1A, Type C, 230V ac AC, 72 V dc DC, 6 kA Breaking
  • RS Stock No. 746-7646
  • Mfr. Part No. 2CDS251001R0014 S201-C1
Subtotal (1 unit)
£13.11(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 16A, Type B, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3164
  • Mfr. Part No. A9F53116
Subtotal (1 unit)
£24.45(exc. VAT)
In Stock
ABB 8 Plastic Consumer Unit, 63A, IEC60670, EN60439-3 IP65 MISTRAL65
  • RS Stock No. 811-1899
  • Mfr. Part No. 1SL1201A00 65P08X12
Subtotal (1 unit)
£25.95(exc. VAT)
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