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

79 of 999+
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-387
  • Mfr. Part No. KV 1518 M
Each
SGD183.85(exc. GST)
Temporarily out of stock
Eaton xComfort Distribution Board
  • RS Stock No. 261-617
  • Mfr. Part No. 302410 KLV-60UPP-F
Each
SGD466.47(exc. GST)
Temporarily out of stock
Eaton xComfort Distribution Board Enclosure, 3 Way
  • RS Stock No. 231-237
  • Mfr. Part No. 110159 BC-A-3/39-TW-G
Each
SGD225.31(exc. GST)
In Stock
Schneider Electric Opale 1 Phase Distribution Board, 4 Way, 63 A
  • RS Stock No. 301-8593
  • Mfr. Part No. 13394
Each
SGD23.06(exc. GST)
Temporarily out of stock
Eaton 1A gG/gL Cartridge Fuse, 14 x 51mm
  • RS Stock No. 229-184
  • Mfr. Part No. C14G1
1 Pack of 10
SGD68.24(exc. GST)
Temporarily out of stock
Schneider Electric R9PR RCCB, 40A, 3 Pole, 30mA, Type A, 400V ac
  • RS Stock No. 276-8973
  • Mfr. Part No. R9PRA440
Each
SGD393.11(exc. GST)
In Stock
ABB System Pro M Compact S200 MCB, 1P, 6A Curve C, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 488-6296
  • Mfr. Part No. 2CDS251001R0064 S201-C6
Each
SGD40.26(exc. GST)
In Stock
Mersen 900A size 33 FF Square Body Fuse, aR, 700V
  • RS Stock No. 304-2221
  • Mfr. Part No. A300081
Each
SGD418.55(exc. GST)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 16A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9719
  • Mfr. Part No. LV510310
Each
SGD336.29(exc. GST)
Unavailable
Merlin Gerin RED RCCB, 40A, 2 Pole, 300mA, Type A, 230V ac
  • RS Stock No. 145-392
  • Mfr. Part No. 18690
Each
SGD950.61(exc. GST)
In Stock
RS PRO 7.5A Brown Blade Car Fuse, 32V dc
  • RS Stock No. 563-772
Each (In a Pack of 10)
SGD0.717(exc. GST)
In Stock
Eaton 35A British Standard Fuse, FE, 690 V ac, 500V dc, 63.5mm
  • RS Stock No. 156-8923
  • Mfr. Part No. 35FE
Each
SGD121.87(exc. GST)
Temporarily out of stock
Eaton xComfort Distribution Board Enclosure, 12 Way
  • RS Stock No. 257-869
  • Mfr. Part No. 281698 BC-U-1/12-TW-ECO
Each
SGD68.38(exc. GST)
In Stock
Siemens ALPHA Distribution Board, 24 Way
  • RS Stock No. 211-6080
  • Mfr. Part No. 8GB1372-2
Each
SGD251.74(exc. GST)
In Stock
Eaton 125A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 703-8484P
  • Mfr. Part No. C22G125
Each (Supplied in a Box)
SGD5.195(exc. GST)
In Stock
RS PRO 15A Inline Fuse Holder for 6x30/6.35x32mm Fuse, 500V ac/dc
  • RS Stock No. 237-5260
Each
SGD10.01(exc. GST)
In Stock
Eaton 630A Centred Tag Fuse, NH2, 690V ac
  • RS Stock No. 182-1376
  • Mfr. Part No. 170M5812D
Each (In a Box of 3)
SGD565.25(exc. GST)
In Stock
Littelfuse 70 → 800A Bolt In Mount Semiconductor Fuse Fuse Block, 600V
  • RS Stock No. 820-7256
  • Mfr. Part No. LSCR002
Each
SGD58.22(exc. GST)
In Stock
Eaton xEffect MCB, 2P, 10A Curve D, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3487
  • Mfr. Part No. 102187 FAZ-D10/2-NA
Each
SGD185.69(exc. GST)
In Stock
ABB SMISSLINE TP S400M MCB, 1P, 32A Curve C, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 176-273
  • Mfr. Part No. 2CCS571001R0324 S401MC32
Each
SGD59.38(exc. GST)
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