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

50226 Products showing for Fuses & Circuit Breakers

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1 / 999+
In Stock
RS PRO, RS Circuit Breaker 3-Pole 1000A, Breaking Capacity 70 kA, Panel Mount
  • RS Stock No. 683-389
Subtotal (1 unit)
MYR5,751.01
MYR5,751.01/unit
In Stock
Eaton 6.3A F Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 537-1391
Subtotal (10 units, in packs of 10)
MYR19.32
MYR1.932/unit
In Stock
RS PRO 5A F Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 610-9721
Subtotal (10 units, in packs of 10)
MYR19.55
MYR1.955/unit
In Stock
RS PRO 5A In-line Fuse Holder for 5 x 20 mm, 250V
  • RS Stock No. 284-6487
Subtotal (10 units, in packs of 10)
MYR121.30
MYR12.13/unit
Temporarily out of stock
Eaton Fuse Holder Accessory Microswitch
  • RS Stock No. 182-1573
  • Mfr. Part No. 170H0069
Subtotal (1 unit)
MYR337.59
MYR337.59/unit
In Stock
ABB, SACE Tmax XT, XT5N Molded Case Circuit Breaker 3-Pole 400A, Breaking Capacity 70 kA, Fixed
  • RS Stock No. 231-9327
  • Mfr. Part No. 1SDA100345R1 XT5N 400 TMA 400-4000 3pFF
Subtotal (1 unit)
MYR5,917.01
MYR5,917.01/unit
In Stock
RS PRO 30A Rail Mount Fuse Holder
  • RS Stock No. 242-0497
Subtotal (10 units, in bags of 10)
MYR207.56
MYR207.56/bag
In Stock
RS PRO Residual Current Circuit Breaker, 25A, 2-Pole, 300 mA, Type A 230V ac
  • RS Stock No. 284-2368
Subtotal (1 unit)
MYR351.70
MYR351.70/unit
In Stock
RS Better World
Schneider Electric Acti9 Acti9 PV Miniature Circuit Breaker, 2-Pole, 40A, Type C, 500 V dc DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3225
  • Mfr. Part No. A9N61537
Subtotal (1 unit)
MYR612.19
MYR612.19/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 6A, Type C, 100V, 12 V, 130 V, 220 V, 240 V, 380 V,
  • RS Stock No. 734-9282
  • Mfr. Part No. A9F87206
Subtotal (1 unit)
MYR1,292.41
MYR1,292.41/unit
In Stock
Mersen 25A AM Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 230-3503
  • Mfr. Part No. G217172 / FR10AM40V25
Subtotal (10 units, in packs of 10)
MYR145.26
MYR14.526/unit
In Stock
Schurter TA35 TA45 Thermal Circuit Breaker -, 6A Current Rating 2-Pole, Panel
  • RS Stock No. 868-9106
  • Mfr. Part No. 4430.0990
Subtotal (1 unit)
MYR226.06
MYR226.06/unit
In Stock
Mersen 500mA FA Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 188-6568
  • Mfr. Part No. H084003
Subtotal (10 units, in packs of 10)
MYR216.70
MYR21.67/unit
In Stock
Wickmann Non-Resettable Fuse, Radial 4A, 250V ac
  • RS Stock No. 377-2196
  • Mfr. Part No. 3821400041
Subtotal (10 units, in packs of 10)
MYR86.61
MYR8.661/unit
In Stock
Littelfuse 3A Purple Car Fuse, 32V dc
  • RS Stock No. 787-4142
  • Mfr. Part No. 0287003.PXCN
Subtotal (10 units, in packs of 10)
MYR17.91
MYR1.791/unit
In Stock
RS Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 4-Pole, 100A, Type C, 440V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 231-9688
  • Mfr. Part No. 2CDS254001R0824 S204-C100 6kA
Subtotal (1 unit, in boxes of 1)
MYR1,464.77
MYR1,464.77/box
In Stock
ETI 25A Bottle Fuse Holder, 1P-Pole for D03, 500V ac
  • RS Stock No. 289-8900
  • Mfr. Part No. DIIGAUGEKIT
Subtotal (1 unit)
MYR51.85
MYR51.85/unit
In Stock
ETA 106-P30 106-P30 Thermal Circuit Breaker -, 4A Current Rating 1-Pole, Panel Mount
  • RS Stock No. 335-974
  • Mfr. Part No. 106-P30-000040-4A
Subtotal (1 unit)
MYR112.32
MYR112.32/unit
In Stock
Mersen 35A, 400V ac D02 Neozed Fuse
  • RS Stock No. 377-0285
  • Mfr. Part No. R219826 / D02GG40V35
Subtotal (5 units, in packs of 5)
MYR74.77
MYR14.954/unit
In Stock
ABB S200 S200 Miniature Circuit Breaker, 1-Pole, 10A, C Type, 230V ac AC, 72 V DC, 20 kA Breaking Capacity
  • RS Stock No. 835-651
  • Mfr. Part No. 2CDS251001R0104
Subtotal (1 unit)
MYR224.58
MYR224.58/unit
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