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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

52422 Products showing for Fuses & Circuit Breakers

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In Stock
RS PRO Miniature Circuit Breaker, 2-Pole, 4A, Type C, 240V ac AC, 240 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 265-0176
Subtotal (1 unit)
£19.48(exc. VAT)
£19.48/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 25A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3394
  • Mfr. Part No. A9F54325
Subtotal (1 unit)
£116.89(exc. VAT)
£116.89/unit
In Stock
RS PRO Industrial Surge Protector, 50 kA, 3.6 kV, DIN Rail
  • RS Stock No. 101-757
Subtotal (1 unit)
£99.84(exc. VAT)
£99.84/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 10A, Type B, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3161
  • Mfr. Part No. A9F53110
Subtotal (1 unit)
£26.81(exc. VAT)
£26.81/unit
In Stock
Eaton 6A British Standard Fuse F1 550V ac
  • RS Stock No. 413-484
  • Mfr. Part No. NSD6
Subtotal (1 pack of 5 units)
£39.44(exc. VAT)
£39.44/pack
In Stock
RS PRO Miniature Circuit Breaker, 3-Pole, 63A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0210
Subtotal (1 unit)
£36.35(exc. VAT)
£36.35/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 16A, Type C, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3297
  • Mfr. Part No. A9F54116
Subtotal (1 unit)
£26.13(exc. VAT)
£26.13/unit
In Stock
Europa EUC3P EUC3P Miniature Circuit Breaker, 3-Pole, 20A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6594
  • Mfr. Part No. EUC3P20C
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
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
RS PRO 250A British Standard Fuse B3 415V ac, 111 mm
  • RS Stock No. 521-2781
Subtotal (1 unit)
£44.43(exc. VAT)
£44.43/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
Eaton 16A British Standard Fuse A2 550V ac, 73 mm
  • RS Stock No. 413-349
  • Mfr. Part No. AAO16
Subtotal (1 pack of 5 units)
£29.14(exc. VAT)
£29.14/pack
In Stock
Eaton 63A British Standard Fuse A3 660V ac, 73 mm
  • RS Stock No. 415-222
  • Mfr. Part No. TIS63
Subtotal (1 unit)
£18.49(exc. VAT)
£18.49/unit
In Stock
RS Better World
Siemens SENTRON 5SL4 Miniature Circuit Breaker, 1-Pole, 1A, Type C, 400V ac AC, 72 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 209-5958
  • Mfr. Part No. 5SL4101-7
Subtotal (1 unit)
£22.45(exc. VAT)
£22.45/unit
In Stock
Schneider Electric Busbar Tap-Off Unit with Circuit Breaker, Canalis Series
  • RS Stock No. 211-0425
  • Mfr. Part No. KNB16CM2
Subtotal (1 unit)
£115.72(exc. VAT)
£115.72/unit
In Stock
Eaton 10A British Standard Fuse F1 550V ac
  • RS Stock No. 413-490
  • Mfr. Part No. NSD10
Subtotal (1 pack of 5 units)
£46.57(exc. VAT)
£9.314/unit
In Stock
Eaton 2A British Standard Fuse F1 550V ac
  • RS Stock No. 413-462
  • Mfr. Part No. NSD2
Subtotal (1 pack of 5 units)
£24.85(exc. VAT)
£4.97/unit
In Stock
Eaton Lockable xComfort IKA Eaton xComfort IKA professional Distribution Board, ABS Plastic, 8 Way
  • RS Stock No. 282-7020
  • Mfr. Part No. 174196 IKA-1/8-ST
Subtotal (1 unit)
£51.55(exc. VAT)
£51.55/unit
In Stock
Europa EUC2P EUC2P Miniature Circuit Breaker, 2-Pole, 2A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6531
  • Mfr. Part No. EUC2P2C
Subtotal (1 unit)
£12.79(exc. VAT)
£12.79/unit
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