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

82 of 999+
In Stock
Schneider Electric Resi9 Resi9 XE DM MCB, 1P, 20A Curve D, 230V AC, 3000 A Breaking Capacity
  • RS Stock No. 287-6048
  • Mfr. Part No. R9EFD620
Each
SGD47.36(exc. GST)
In Stock
Eaton RCD, 40A, 2 Pole, 300mA, Type S
  • RS Stock No. 922-8686
  • Mfr. Part No. 235461 PFIM-40/2/03-S-MW
Each
SGD306.27(exc. GST)
In Stock
Eaton 10A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-176
  • Mfr. Part No. C10G10 CYLINDRICAL FUSE 10 x 38 10A GG 500V AC
1 Pack of 10
SGD30.58(exc. GST)
Temporarily out of stock
Better World
ABB, XT4L MCCB 4P 250A, Fixed Mount
  • RS Stock No. 236-6840
  • Mfr. Part No. 1SDA068590R1 XT4L 250 Ekip LSIG 250A FF
Each
SGD5,766.50(exc. GST)
In Stock
Schurter 16A Panel Mount Fuse Holder for 6.3 x 32, 5 x 20mm Fuse, 1P, 500V ac
  • RS Stock No. 866-3589
  • Mfr. Part No. 0031.2304
Each (In a Pack of 25)
SGD11.761(exc. GST)
In Stock
RS PRO 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 188-4630
Each
SGD6.22(exc. GST)
Temporarily out of stock
Better World
Schneider Electric ComPact NSX, Easy Pact CVS Fixing Screws for use with ComPact NSX 400/640, Easy Pact CVS 400/630
  • RS Stock No. 219-9406
  • Mfr. Part No. LV432552
Each
SGD17.29(exc. GST)
In Stock
Littelfuse 0.5A Resettable Fuse, 13.2V dc
  • RS Stock No. 787-4202P
  • Mfr. Part No. 1210L050YR
Each (Supplied on a Reel)
SGD0.501(exc. GST)
In Stock
ABB Tmax T Partitions for use with Circuit Breaker
  • RS Stock No. 232-0122
  • Mfr. Part No. 1SDA054971R1 PB100 T4-T5-T7
Each
SGD68.37(exc. GST)
In Stock
Eaton 125A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 703-8484
  • Mfr. Part No. C22G125
Each (In a Pack of 10)
SGD5.195(exc. GST)
Currently unavailable
Eaton 30A F Melamine Cartridge Fuse, 14 x 38mm
  • RS Stock No. 851-1656
  • Mfr. Part No. JJS-30
Each
SGD89.19(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 MCB, 1P, 2A Curve D, 10 kA Breaking Capacity
  • RS Stock No. 219-9142
  • Mfr. Part No. M9F23102
Each
SGD77.74(exc. GST)
In Stock
Lovato ModuLo P1MB MCB, 2P, 10A Curve C, 230V AC, 80V DC, 10 kA Breaking Capacity
  • RS Stock No. 825-5716
  • Mfr. Part No. P1MB2PC10
Each
SGD74.81(exc. GST)
In Stock
Siemens 63A Bottle Fuse Holder, 1P, 400V ac
  • RS Stock No. 622-0711
  • Mfr. Part No. 5SG1701
Each
SGD26.76(exc. GST)
In Stock
Littelfuse 1A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 738-3172P
  • Mfr. Part No. 0KLK001.T
Each (Supplied in a Bag)
SGD34.70(exc. GST)
In Stock
Phoenix Contact Thermal Circuit Breaker - TCP 10A Single Pole 65 V dc, 250V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 801-6915
  • Mfr. Part No. 0712314
Each
SGD38.26(exc. GST)
Temporarily out of stock
ABB System Pro M Compact SU200 MR Circuit Breaker, 1P, 15A Curve K, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 202-897
  • Mfr. Part No. 2CDS271347R0457
Each
SGD153.83(exc. GST)
In Stock
Eaton 11A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 459-7924
  • Mfr. Part No. DMM-B-11A
Each (In a Pack of 5)
SGD126.638(exc. GST)
Temporarily out of stock
ABB S801S RCCB, 32A, 1 Pole, 690V
  • RS Stock No. 140-917
  • Mfr. Part No. 2CCS801901R0539
Each
SGD388.77(exc. GST)
In Stock
32A Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 262-005
  • Mfr. Part No. CHM1DU
1 Pack of 12
SGD100.53(exc. GST)
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