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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

52721 Products showing for Fuses & Circuit Breakers

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In Stock
RS PRO Residual Current Circuit Breaker, 25A, 2-Pole, 30 mA, Type A 230V ac
  • RS Stock No. 284-2367
Subtotal (1 unit)
£32.79(exc. VAT)
£32.79/unit
In Stock
RS Better World
ABB ComPact Home SH200 Miniature Circuit Breaker, 1-Pole, 2A, Type C, 253V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 231-9651
  • Mfr. Part No. 2CDS211001R0024 SH201-C 2
Subtotal (1 box of 1 unit)
£15.47(exc. VAT)
£15.47/box
In Stock
Europa EUC3P EUC3P Miniature Circuit Breaker, 3-Pole, 10A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6581
  • Mfr. Part No. EUC3P10C
Subtotal (1 unit)
£22.40(exc. VAT)
£22.40/unit
In Stock
ABB F200 Series Residual Current Circuit Breaker, 40A, 4-Pole, 100 mA, Type A, 1 kA 480V ac
  • RS Stock No. 177-5087
  • Mfr. Part No. 2CSF204201R2400 F204 A S-40/0,1
Subtotal (1 unit)
£242.44(exc. VAT)
£242.44/unit
In Stock
Europa EUC3P EUC3P Miniature Circuit Breaker, 3-Pole, 2A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6575
  • Mfr. Part No. EUC3P2C
Subtotal (1 unit)
£22.40(exc. VAT)
£22.40/unit
In Stock
Europa EUC1P EUC Miniature Circuit Breaker, 1-Pole, 4A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6490
  • Mfr. Part No. EUC1P4C
Subtotal (1 unit)
£10.24(exc. VAT)
£10.24/unit
In Stock
RS PRO 250A British Standard Fuse B3 415V ac, 111 mm
  • RS Stock No. 521-2781
Subtotal (1 unit)
£45.66(exc. VAT)
£45.66/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)
£4.47(exc. VAT)
£4.47/unit
In Stock
Eaton PXF Series Residual Current Circuit Breaker, 40A, 4-Pole, 30 mA, Type B, 10 kA 400V ac
  • RS Stock No. 203-9039
  • Mfr. Part No. 300299 PXF-40/4/003-B
Subtotal (1 unit)
£497.51(exc. VAT)
£497.51/unit
In Stock
RS Better World
ABB System Pro M Compact S200M Miniature Circuit Breaker, 2-Pole, 25A, Type D, 440V ac AC, 125 V dc DC, 15 kA Breaking
  • RS Stock No. 231-9726
  • Mfr. Part No. 2CDS272001R0251 S202M D 25A - 15 KA
Subtotal (1 box of 1 unit)
£46.23(exc. VAT)
£46.23/box
In Stock
Europa EUC3P EUC3P Miniature Circuit Breaker, 3-Pole, 25A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6597
  • Mfr. Part No. EUC3P25C
Subtotal (1 unit)
£22.40(exc. VAT)
£22.40/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 xPole Series Residual Current Circuit Breaker, 63A, 2-Pole, 30 mA, Type A, 10 kA 230V ac
  • RS Stock No. 227-0738
  • Mfr. Part No. 267448 PFGM-63/2/003-A
Subtotal (1 unit)
£66.44(exc. VAT)
£66.44/unit
Last RS stock
RS Better World
ABB S200C S200C Miniature Circuit Breaker, 2-Pole, 6A, Type C, 240V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 212-1603
  • Mfr. Part No. 2CDS251281R0064
Subtotal (1 unit)
£40.88(exc. VAT)
£40.88/unit
In Stock
Allen Bradley 1492 1492-SPM Miniature Circuit Breaker, 2-Pole, 10A, Type D, 480V ac AC, 96 V dc DC, 10 kA Breaking
  • RS Stock No. 125-1511
  • Mfr. Part No. 1492-SPM2D100
Subtotal (1 unit)
£49.31(exc. VAT)
£49.31/unit
In Stock
Legrand 4117 Series Residual Current Device, 63A, 3+N-Pole, 30 mA, Type A, 10 kA 400V ac
  • RS Stock No. 863-7764
  • Mfr. Part No. 4 117 61
Subtotal (1 unit)
£140.60(exc. VAT)
£140.60/unit
In Stock
ABB System Pro M Compact System Pro M Compact Miniature Circuit Breaker, 1-Pole, 6A, Type C, 253V ac AC, 72 V dc DC, 6
  • RS Stock No. 488-6296
  • Mfr. Part No. 2CDS251001R0064 S201-C6
Subtotal (1 unit)
£16.45(exc. VAT)
£16.45/unit
In 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
Europa EUC2P EUC2P Miniature Circuit Breaker, 2-Pole, 6A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6544
  • Mfr. Part No. EUC2P6C
Subtotal (1 unit)
£15.36(exc. VAT)
£15.36/unit
In Stock
Eaton 63A British Standard Fuse A3 550V ac, 73.5 mm
  • RS Stock No. 413-383
  • Mfr. Part No. BAO63
Subtotal (1 unit)
£11.33(exc. VAT)
£11.33/unit
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