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

32 of 999+
ABB System Pro M Compact S200M MCB, 2P, 10A, Type Z, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-050
  • Mfr. Part No. 2CDS272001R0428
Each
SGD167.68(exc. GST)
WJ Furse Copper Alloy Earth Clamp Max. Conductor Size 26 x 12mm Nominal Rod dia. 12.7mm
  • RS Stock No. 153-2961
  • Mfr. Part No. 7TCA083210R0004 CR105
Each (In a Pack of 10)
SGD15.127(exc. GST)
Selco Thermal Fuse +240°C 10 A, 250V ac
  • RS Stock No. 111-7813
  • Mfr. Part No. SWTC-464-3535
Each (In a Pack of 10)
SGD3.04(exc. GST)
RS PRO MCB, 3P, 20A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0207
Each
SGD50.55(exc. GST)
Better World
ABB Emax 2 MCB, 3P, 800A, 690V AC, 66 kA Breaking Capacity
  • RS Stock No. 225-5871
  • Mfr. Part No. 1SDA070765R1 E1.2N 800 Ekip Touch LSI 3
Each
SGD8,721.81(exc. GST)
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 30A Curve C, 500V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3216
  • Mfr. Part No. A9N61534
Each
SGD221.24(exc. GST)
Littelfuse 15A Blue Blade Car Fuse, 32V ac/dc
  • RS Stock No. 878-3286
  • Mfr. Part No. 0MIN015.V
Each (In a Pack of 50)
SGD1.397(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 45A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 268-043
  • Mfr. Part No. 3VA5245-7ED31-1AA0
Each
SGD1,603.50(exc. GST)
RS PRO MCB, 2P, 20A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0183
Each
SGD34.32(exc. GST)
Better World
Schneider Electric Compact Nsx, Compact Nsx Dc Plug In Kit for use with Compact Nsx 400/630
  • RS Stock No. 221-1251
  • Mfr. Part No. LV432538
Each
SGD1,203.44(exc. GST)
Siemens 32A Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 269-8374
  • Mfr. Part No. 3NW7014
Each
SGD18.87(exc. GST)
Better World
ABB System Pro M Compact S200M MCB, 2P, 32A Curve B, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 132-059
  • Mfr. Part No. 2CDS272001R0325 S202M-B32
Each
SGD55.83(exc. GST)
RS PRO PC Board Non Resettable Fuse, Axial 750mA, 125V ac/dc
  • RS Stock No. 764-9466
Each (In a Pack of 10)
SGD0.785(exc. GST)
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)
RS PRO MCB, 1P, 20A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0199
Each
SGD17.67(exc. GST)
TE Connectivity Thermal Circuit Breaker - W51 Single Pole 250V ac Voltage Rating, 20A Current Rating
  • RS Stock No. 782-8066
  • Mfr. Part No. W51-A152A1-20
Each
SGD10.63(exc. GST)
ABB 8 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1899
  • Mfr. Part No. 1SL1201A00 65P08X12
Each
SGD45.80(exc. GST)
Eaton 6A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7168
  • Mfr. Part No. MDL-6-R
Each
SGD2.50(exc. GST)
Schurter 10A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 1P, 250V ac
  • RS Stock No. 866-3435
  • Mfr. Part No. 0031.1661
Each (In a Pack of 50)
SGD2.00(exc. GST)
Better World
Schneider Electric Acti 9 iC60L MCB, 2P, 10A Curve C, 100 → 130V AC, 12 → 144V DC, 10 kA Breaking Capacity
  • RS Stock No. 734-9400
  • Mfr. Part No. A9F94210
Each
SGD289.04(exc. GST)
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