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

65 of 999+
In Stock
ABB System Pro M Compact SU200M MCB, 1P, 10A Curve K, 277V AC, 277V DC, 15 kA Breaking Capacity
  • RS Stock No. 231-9718
  • Mfr. Part No. 2CDS271337R0427 SU201M-K10
1 Box of 1
SGD80.91(exc. GST)
In Stock
Eaton 2A gG/gL Cartridge Fuse, 14 x 51mm
  • RS Stock No. 228-667
  • Mfr. Part No. C14G2
1 Pack of 10
SGD33.91(exc. GST)
Temporarily out of stock
Eaton 500A Bolted Tag Fuse, 600V, 120.65mm
  • RS Stock No. 848-4308
  • Mfr. Part No. KAC-500
Each
SGD1,081.42(exc. GST)
In Stock
ABB RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 183-3702
  • Mfr. Part No. 2CSR245041R1204
Each
SGD178.48(exc. GST)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 400A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9787
  • Mfr. Part No. LV540319
Each
SGD1,394.02(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 2P, 4A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1284
  • Mfr. Part No. 5SY4204-8
Each
SGD163.25(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 10A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 132-071
  • Mfr. Part No. 2CDS272001R0104 S202M-C10
Each
SGD150.97(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SJ4 MCB, 2P, 30A Curve C, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 212-8931
  • Mfr. Part No. 5SJ4230-7HG41
Each
SGD261.60(exc. GST)
In Stock
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 20A
  • RS Stock No. 221-0898
  • Mfr. Part No. BGL36020LU
Each
SGD899.35(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 2P, 16A Curve K, 15 kA Breaking Capacity
  • RS Stock No. 219-9300
  • Mfr. Part No. A9F95216
Each
SGD256.72(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 16A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7716
  • Mfr. Part No. 2CDS252001R0164 S202-C16
Each
SGD92.68(exc. GST)
In Stock
Schneider Electric, ComPacT MCCB 4P 63A, Fixed Mount
  • RS Stock No. 260-7479
  • Mfr. Part No. C10V4TM063
Each
SGD1,730.16(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 C60N MCB, 4P, 16A Curve C
  • RS Stock No. 248-3870
  • Mfr. Part No. M9F11416
Each
SGD548.77(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 600A, Fixed Mount
  • RS Stock No. 260-8242
  • Mfr. Part No. C63S3TM600D
Each
SGD4,108.12(exc. GST)
In Stock
Schurter 20A Panel Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 344-5636
  • Mfr. Part No. 0031.1753
Each (In a Pack of 5)
SGD6.316(exc. GST)
In Stock
Lovato 32A Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 248-5512
  • Mfr. Part No. FB01F1PL
Each
SGD24.55(exc. GST)
Temporarily out of stock
Schneider Electric A9R RCCB, 40A, 4 Pole, 30mA, Type AC, 380 → 415V ac
  • RS Stock No. 655-156
  • Mfr. Part No. A9R41440
Each
SGD407.59(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 5SY6 MCB, 2P, 10A Curve B, 6 kA Breaking Capacity
  • RS Stock No. 203-2202
  • Mfr. Part No. 5SY6210-6
Each
SGD86.14(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 6A Curve C, 100 → 130V AC, 12 → 144V DC, 10 kA Breaking Capacity
  • RS Stock No. 734-9282
  • Mfr. Part No. A9F87206
Each
SGD360.19(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 4A Curve K, 253V AC, 72V DC, 20 kA Breaking Capacity
  • RS Stock No. 514-0119
  • Mfr. Part No. 2CDS251001R0337 S201-K4
Each
SGD52.75(exc. GST)
1
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