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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
Earth & Lightning Protection
Fuse Holders & Accessories
Fuses

52443 Products showing for Fuses & Circuit Breakers

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In Stock
RS PRO Miniature Circuit Breaker, 1-Pole, 10A, Type C, 240V ac AC, 240 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 265-0188
Subtotal (1 unit)
£8.48(exc. VAT)
£8.48/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
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
Europa EUC3P EUC3P Miniature Circuit Breaker, 3-Pole, 1A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6572
  • Mfr. Part No. EUC3P1C
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
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)
£272.58(exc. VAT)
£272.58/unit
In Stock
Schneider Electric Multi9 M9F Circuit Breaker, 1-Pole, 4A, C Curve, 415V AC, 72 V DC, 15 kA Breaking Capacity
  • RS Stock No. 781-722
  • Mfr. Part No. M9F11104
Subtotal (1 unit)
£33.14(exc. VAT)
£33.14/unit
In Stock
RS PRO 7.5A Brown Car Fuse, 32V dc
  • RS Stock No. 563-772
Subtotal (1 pack of 10 units)
£2.05(exc. VAT)
£2.05/pack
In Stock
RS Better World
Siemens SENTRON 5SY4 Miniature Circuit Breaker, 1-Pole, 10A, Type D, 400V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 772-1252
  • Mfr. Part No. 5SY4110-8
Subtotal (1 unit)
£20.87(exc. VAT)
£20.87/unit
In Stock
Eaton PXF-A Series Residual Current Circuit Breaker, 63A, 3+N-Pole, 300 mA, Type A, 630 A 400V ac
  • RS Stock No. 490-416
  • Mfr. Part No. 236804 PXF-63/4/03-A
Subtotal (1 unit)
£118.10(exc. VAT)
£118.10/unit
In Stock
Schneider Electric Resi9 R9F2 Miniature Circuit Breaker, 1-Pole, 13A, Type B, 230V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 212-139
  • Mfr. Part No. R9F23113
Subtotal (1 unit)
£7.04(exc. VAT)
£7.04/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
RS Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 2-Pole, 2A, Type C, 400V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7699
  • Mfr. Part No. 2CDS252001R0024 S202-C2
Subtotal (1 unit)
£51.93(exc. VAT)
£51.93/unit
In Stock
Rittal Earth Bar L. 450 mm x W. 15mm x H. 5 mm
  • RS Stock No. 826-2868
  • Mfr. Part No. 7113000
Subtotal (1 unit)
£36.33(exc. VAT)
£36.33/unit
In Stock
RS Better World
Siemens SENTRON 5SY6 Miniature Circuit Breaker, 3-Pole, 10A, Type C, 400V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 203-2184
  • Mfr. Part No. 5SY6310-7
Subtotal (1 unit)
£72.37(exc. VAT)
£72.37/unit
In Stock
Eaton xPole PXL Miniature Circuit Breaker, 3-Pole, 16A, Type C, 400V ac AC, 48 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 490-107
  • Mfr. Part No. 236426 PXL-C16/3
Subtotal (1 unit)
£30.10(exc. VAT)
£30.10/unit
In Stock
RS Better World
Schneider Electric Acti9 Acti9 PV Miniature Circuit Breaker, 1-Pole, 5A, Type C, 250 V dc DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3161
  • Mfr. Part No. A9N61505
Subtotal (1 unit)
£51.29(exc. VAT)
£51.29/unit
In Stock
Mersen 6A GG Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 188-6978
  • Mfr. Part No. K215128 / FR10GG50V6
Subtotal (1 pack of 10 units)
£14.28(exc. VAT)
£14.28/pack
In Stock
Europa EUC3P EUC3P Miniature Circuit Breaker, 3-Pole, 50A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6604
  • Mfr. Part No. EUC3P50C
Subtotal (1 unit)
£22.40(exc. VAT)
£22.40/unit
In Stock
Contactum Residual Current Circuit Breaker with Overload Protection, 6A Current Rating, 1-Pole, 30 mA Trip Sensitivity,
  • RS Stock No. 240-6382
  • Mfr. Part No. CCPBR0606AB
Subtotal (1 unit)
£23.70(exc. VAT)
£23.70/unit
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