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

Fuses - PCB
Fuses - PCB

48621 Products showing for Fuses & Circuit Breakers

8 / 999+
In Stock
Eaton 16A Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 703-8399
  • Mfr. Part No. C10G16
Subtotal (1 pack of 10 units)
MYR79.75
MYR7.975/unit
In Stock
Phoenix Contact Copper NLS-CU Busbar
  • RS Stock No. 290-1258
  • Mfr. Part No. 0402174
Subtotal (1 unit)
MYR110.33
MYR110.33/unit
In Stock
Littelfuse 5A Brown Car Fuse, 32V dc
  • RS Stock No. 787-4108
  • Mfr. Part No. 0287005.PXCN
Subtotal (1 pack of 10 units)
MYR17.20
MYR1.72/unit
Stocked by manufacturer
Siemens SENTRON 5SP4 Miniature Circuit Breaker, 2-Pole, 100A, Type D, 400V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 209-6562
  • Mfr. Part No. 5SP4291-8
Subtotal (1 unit)
MYR1,693.63
MYR1,693.63/unit
In Stock
Littelfuse 4A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 541-3798
  • Mfr. Part No. 0215004.MXP
Subtotal (1 pack of 10 units)
MYR51.31
MYR5.131/unit
In Stock
Schneider Electric Acti9 iC60 Series Residual Current Circuit Breaker, 40A, 2-Pole, 30 mA, Type A-SI, 1500 A 240V ac
  • RS Stock No. 276-8736
  • Mfr. Part No. A9Q31240
Subtotal (1 unit)
MYR1,766.82
MYR1,766.82/unit
In Stock
Better World
Schneider Electric Surge Arrester, 40 kA, 800 V ac
  • RS Stock No. 219-8275
  • Mfr. Part No. A9L40271
Subtotal (1 unit)
MYR1,564.82
MYR1,564.82/unit
In Stock
Hager MJT Miniature Circuit Breaker, 2-Pole, 10A, Type C, 400V ac AC, 253 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 144-4949
  • Mfr. Part No. MJT710
Subtotal (1 unit)
MYR163.13
MYR163.13/unit
Stocked by manufacturer
Schneider Electric 48V ac Shunt Trip for use with ComPacT NSX100
  • RS Stock No. 654-993
  • Mfr. Part No. LV429385
Subtotal (1 unit)
MYR739.42
MYR739.42/unit
In Stock
ABB F200 Series Residual Current Circuit Breaker, 40A, 2-Pole, 30 mA, Type B, 1 kA 230V ac
  • RS Stock No. 289-1618
  • Mfr. Part No. 2CSF202568R1400
Subtotal (1 unit)
MYR2,612.86
MYR2,612.86/unit
In Stock
Mersen 25A F Ceramic Cartridge Fuse, 14 x 51 mm
  • RS Stock No. 188-7375
  • Mfr. Part No. E219769
Subtotal (1 pack of 10 units)
MYR88.11
MYR8.811/unit
In Stock
Schurter 0.5A F Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 269-3871
  • Mfr. Part No. 8020.5065
Subtotal (1 unit)
MYR6.15
MYR6.15/unit
In Stock
Schurter 10A Panel Mount Fuse Holder, 1P-Pole for 6.3 x 32 mm, 250V ac
  • RS Stock No. 412-863
  • Mfr. Part No. 0031.1804
Subtotal (1 pack of 5 units)
MYR126.28
MYR25.256/unit
In Stock
ABB F200 Series Residual Current Circuit Breaker, 25A, 2-Pole, 30 mA, Type AC, 0.03 A 230V ac
  • RS Stock No. 537-7355
  • Mfr. Part No. 2CSF202001R1250 F202 AC-25/0,03
Subtotal (1 unit)
MYR939.60
MYR939.60/unit
In Stock
Better World
Schneider Electric Acti9 Acti9 iDT40K Miniature Circuit Breaker, 1-Pole, 10A, Type C, 230V ac AC, 4500 A Breaking
  • RS Stock No. 238-3411
  • Mfr. Part No. A9P71610
Subtotal (1 unit)
MYR175.46
MYR175.46/unit
In Stock
Better World
Schneider Electric Multi9 C60N Miniature Circuit Breaker, 2-Pole, 10A, Type C, 125 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 214-2065
  • Mfr. Part No. M9F11210
Subtotal (1 unit)
MYR377.41
MYR377.41/unit
In Stock
Phoenix Contact CBMC Electronic Circuit Breaker 10A 24V, DIN Rail Type E
  • RS Stock No. 207-2719
  • Mfr. Part No. 2906032
Subtotal (1 unit)
MYR654.22
MYR654.22/unit
In Stock
brennenstuhl BD 4 Phase Distribution Board 30mA 4 Way
  • RS Stock No. 270-2188
  • Mfr. Part No. 1154911
Subtotal (1 unit)
MYR1,121.62
MYR1,121.62/unit
In Stock
Littelfuse 8A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 541-4735
  • Mfr. Part No. 0215008.MXP
Subtotal (1 pack of 10 units)
MYR59.01
MYR5.901/unit
In Stock
Siemens 25A D2 Diazed Fuse, 500V ac/dc
  • RS Stock No. 163-282
  • Mfr. Part No. 5SB2811
Subtotal (1 pack of 25 units)
MYR162.63
MYR162.63/pack
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