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

49110 Products showing for Fuses & Circuit Breakers

17 of 999+
Temporarily out of stock
ABB FH200 RCCB, 63A, 2 Pole, 30mA, Type A
  • RS Stock No. 186-3467
  • Mfr. Part No. 2CSF202124R1630
Each
SGD174.99(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 50 kA, Plug In
  • RS Stock No. 231-261
  • Mfr. Part No. 111657 NZMN3-4-AE400-BT
Each
SGD4,846.32(exc. GST)
Temporarily out of stock
Eaton RCBO, 25A Current Rating, 2P Poles, 100mA Trip Sensitivity, Type A, Type D, FRBdM Range
  • RS Stock No. 121-245
  • Mfr. Part No. 168227 FRBDM-D25/2/01-G/A
Each
SGD407.53(exc. GST)
Last RS stock
Schneider Electric, Compact MCCB 3P 16A, Breaking Capacity 16 kA
  • RS Stock No. 178-8085
  • Mfr. Part No. LV426150
Each
SGD205.40(exc. GST)
Currently unavailable
ABB IEC Range Busbar for use with DDA200, F200, S200
  • RS Stock No. 250-4742
  • Mfr. Part No. 2CDL220001R1048
Each
SGD140.25(exc. GST)
Temporarily out of stock
Eaton xEffect MCB, 4P, 63A Curve C, 400V AC, 60V DC, 25 kA Breaking Capacity
  • RS Stock No. 251-913
  • Mfr. Part No. 211797 AZ-4-C63
Each
SGD744.15(exc. GST)
In Stock
Eaton xEffect MCB, 1P, 2A Curve D, 240 → 415V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-6923
  • Mfr. Part No. 102100 FAZ-D2/1-NA
Each
SGD70.66(exc. GST)
In Stock
Better World
Schneider Electric Easypact Cvs400...630, Nsx400...630 Dc, Powerpact Multistandard Front Plate for use with Compact Nsx
  • RS Stock No. 221-1256
  • Mfr. Part No. LV432558
Each
SGD88.33(exc. GST)
In Stock
Better World
ABB S200C MCB, 2P, 4A Curve C, 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-1617
  • Mfr. Part No. 2CDS252280R0044
Each
SGD76.83(exc. GST)
In Stock
SIBA 6A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 314-4793
  • Mfr. Part No. 50-179-06/6A
Each (In a Pack of 5)
SGD16.89(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 32A, Type Z
  • RS Stock No. 231-9676
  • Mfr. Part No. 2CDS252001R0538 S202 Z 32A - 10 KA
1 Box of 1
SGD174.63(exc. GST)
In Stock
Siemens SENTRON 5SL66 MCB, 3P+N, 6A Curve B, 440V AC, 62.5V DC, 6 kA Breaking Capacity
  • RS Stock No. 328-356
  • Mfr. Part No. 5SL6606-6
Each
SGD216.71(exc. GST)
In Stock
Wickmann 2A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 174-0652
  • Mfr. Part No. 0477002.MXP
Each (In a Pack of 5)
SGD1.636(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 63A, Fixed Mount
  • RS Stock No. 254-6319
  • Mfr. Part No. C11H3TM063L
Each
SGD839.13(exc. GST)
In Stock
Littelfuse 10A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4741
  • Mfr. Part No. 0215010.MXP
Each (In a Pack of 10)
SGD1.634(exc. GST)
Temporarily out of stock
ABB Front Terminal for use with S6 800, T6 800
  • RS Stock No. 250-4495
  • Mfr. Part No. 1SDA013956R1
Each
SGD406.02(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 8A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 243-527
  • Mfr. Part No. 102106 FAZ-D8/1-NA
1 Pack of 2
SGD194.55(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 5SL4 MCB, 3+N, 6A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 209-6541
  • Mfr. Part No. 5SL4606-8
Each
SGD255.21(exc. GST)
In Stock
ABB High Performance S800N MCB, 3P, 80A Curve B, 400V AC, 36 kA Breaking Capacity
  • RS Stock No. 435-239
  • Mfr. Part No. 2CCG001220R0001
Each
SGD525.86(exc. GST)
In Stock
RS PRO 1A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 668-5966
Each (In a Pack of 10)
SGD0.515(exc. GST)
1
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