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

400 Products showing for Fuses & Circuit Breakers

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Temporarily out of stock
Siemens Adapter for use with 3VA20/21/22
  • RS Stock No. 161-884
  • Mfr. Part No. 3VA9167-0LF10
Subtotal (1 unit)
MYR644.70
MYR644.70/unit
Temporarily out of stock
Schneider Electric ComPact New Generation Trip Unit for use with ComPact
  • RS Stock No. 336-641
  • Mfr. Part No. C104MG100
Subtotal (1 unit)
MYR1,383.57
MYR1,383.57/unit
Temporarily out of stock
Schneider Electric TeSys TeSys Miniature Circuit Breaker, 3-Pole, 2A, 690V ac AC, 8 kA Breaking Capacity
  • RS Stock No. 175-1424
  • Mfr. Part No. GV4L02N
Subtotal (1 unit)
MYR3,370.32
MYR3,370.32/unit
Temporarily out of stock
Eaton, NZM, NZM Molded Case Circuit Breaker 4-Pole 125A, Breaking Capacity 4 kA, Plug-in
  • RS Stock No. 229-544
  • Mfr. Part No. 113231 NZMC2-4-A125-SVE
Subtotal (1 unit)
MYR8,254.92
MYR8,254.92/unit
Temporarily out of stock
RS Better World
Siemens Residual Current Circuit Breaker with Overload Protection, 6A Current Rating, 2-Pole, 30 mA Trip Sensitivity,
  • RS Stock No. 225-8806
  • Mfr. Part No. 5SV1316-3KK06
Subtotal (1 unit)
MYR1,284.31
MYR1,284.31/unit
In Stock
Eaton xEffect xEffect Miniature Circuit Breaker, 3-Pole, 32A, Type D, 400V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 230-1044
  • Mfr. Part No. 177416 FAZ6-D32/3N
Subtotal (1 unit)
MYR461.63
MYR461.63/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 10A, Type D, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3470
  • Mfr. Part No. A9F55110
Subtotal (1 unit)
MYR187.89
MYR187.89/unit
In Stock
Siemens Lockable Alpha ALPHA Distribution Board, 18 Way
  • RS Stock No. 211-6079
  • Mfr. Part No. 8GB1371-3
Subtotal (1 unit)
MYR690.78
MYR690.78/unit
In Stock
ABB SMISSLINE TP Busbar System Auxiliary Switch Kit for use with Plug-in Distribution Systems Accessories
  • RS Stock No. 140-920
  • Mfr. Part No. 2CCS500900R0081
Subtotal (1 unit)
MYR265.54
MYR265.54/unit
In Stock
Eaton xEffect FAZ Miniature Circuit Breaker, 1-Pole, 5A, Type C, 230V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 256-707
  • Mfr. Part No. 278667 FAZ-C5/1N
Subtotal (1 unit)
MYR418.72
MYR418.72/unit
Temporarily out of stock
Eaton xEffect FAZ Miniature Circuit Breaker, 1-Pole, 32A, Type B, 250 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 246-058
  • Mfr. Part No. 176072 FAZ-B32/1-DC
Subtotal (1 unit)
MYR861.36
MYR861.36/unit
Temporarily out of stock
Schneider Electric, PowerPact, BJL Molded Case Circuit Breaker 2-Pole 90A, Breaking Capacity 65 kA, Clip-on
  • RS Stock No. 346-821
  • Mfr. Part No. BJL26090LU
Subtotal (1 unit)
MYR5,194.86
MYR5,194.86/unit
In Stock
Legrand 40A Ceramic Cartridge Fuse, 14 x 51 mm
  • RS Stock No. 180-6123
  • Mfr. Part No. 0 143 40
Subtotal (1 box of 10 units)
MYR285.03
MYR28.503/unit
Temporarily out of stock
Schneider Electric Key Lock for use with Rotary Handle Locking, ComPact NS630b To NS1600
  • RS Stock No. 245-074
  • Mfr. Part No. 33868
Subtotal (1 unit)
MYR188.69
MYR188.69/unit
In Stock
Legrand DNX3 DNX3 Circuit Breaker, 1-Pole, 3A, Type C, 230V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 266-1313
  • Mfr. Part No. 406877
Subtotal (1 unit)
MYR315.29
MYR315.29/unit
Temporarily out of stock
RS Better World
ABB, SACE Tmax XT, XT3N Molded Case Circuit Breaker 4-Pole 250A, Breaking Capacity 3.75 kA, Fixed
  • RS Stock No. 232-0269
  • Mfr. Part No. 1SDA068070R1 XT3N 250 TMD 250A FF
Subtotal (1 unit)
MYR6,168.65
MYR6,168.65/unit
In Stock
Littelfuse Non-Resettable Fuse 62mA, 125V
  • RS Stock No. 738-2908P
  • Mfr. Part No. 0154.062DR
Subtotal 10 units (supplied on a continuous strip)
MYR158.77
MYR15.877/unit
Temporarily out of stock
RS Better World
Siemens SENTRON 5SY6 Miniature Circuit Breaker, 3-Pole, 63A, Type C, 400V ac AC, 72 V dc DC, 5 kA Breaking Capacity
  • RS Stock No. 212-8893
  • Mfr. Part No. 5SY6363-7
Subtotal (1 unit)
MYR1,230.01
MYR1,230.01/unit
Temporarily out of stock
RS Better World
Siemens, SENTRON, 3VA1 Molded Case Circuit Breaker 4-Pole 20A, Breaking Capacity 36 kA, Fixed
  • RS Stock No. 271-9825
  • Mfr. Part No. 3VA1120-4GE46-0AA0
Subtotal (1 unit)
MYR3,039.80
MYR3,039.80/unit
Temporarily out of stock
RS Better World
Siemens, SENTRON, 3VA61 Molded Case Circuit Breaker 3-Pole 40A, Breaking Capacity 100 kA, Fixed
  • RS Stock No. 245-769
  • Mfr. Part No. 3VA6140-7JT31-2AA0
Subtotal (1 unit)
MYR17,017.83
MYR17,017.83/unit
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