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

34 of 999+
ABB, Pro M MCCB 1P 100A, DIN Rail Mount
  • RS Stock No. 538-3833
  • Mfr. Part No. 2CDE283001R0100 E203/100R
Each
SGD103.48(exc. GST)
ABB, Tmax XT MCCB 3P 100A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 831-9172
  • Mfr. Part No. 1SDA067416R1 XT1N 160 TMD 100-1000 3p F F
Each
SGD295.28(exc. GST)
RS PRO 6.3A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9822
Each (In a Pack of 10)
SGD0.824(exc. GST)
Littelfuse Non-Resettable Wire Ended Fuse 1A, 125V ac/dc
  • RS Stock No. 738-3046
  • Mfr. Part No. 0251001.MXL
Each (In a Pack of 10)
SGD1.129(exc. GST)
Eaton 7A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 848-3052
  • Mfr. Part No. GMA-7-R
Each
SGD3.19(exc. GST)
Mersen 8A Ceramic Cartridge Fuse, 8 x 32mm
  • RS Stock No. 230-2976
  • Mfr. Part No. B213096
Each (In a Pack of 10)
SGD2.021(exc. GST)
Eaton 40A Bolted Tag Fuse, 500 V dc, 690V ac, 63.5mm
  • RS Stock No. 182-1701
  • Mfr. Part No. 40ET
Each
SGD62.57(exc. GST)
ABB F200 RCCB, 40A, 4 Pole, 30mA, Type AC
  • RS Stock No. 537-7428
  • Mfr. Part No. 2CSF204001R1400 F204 AC-40/0,03
Each
SGD279.91(exc. GST)
Better World
Siemens SENTRON 5SY6 MCB, 3+N, 6A Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 209-6695
  • Mfr. Part No. 5SY6606-7
Each
SGD224.00(exc. GST)
Eaton 16A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-265
  • Mfr. Part No. C10G16 CYLINDRICAL FUSE 10 x 38 16A GG 500V AC
1 Pack of 10
SGD30.14(exc. GST)
RS PRO 20A Time Lag Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 666-154
1 Pack of 100
SGD45.95(exc. GST)
Selco Thermal Fuse +216°C 10 A, 250V ac
  • RS Stock No. 111-7811
  • Mfr. Part No. SWTC-421-3535
Each (In a Pack of 10)
SGD3.197(exc. GST)
Mersen 4A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-7038
  • Mfr. Part No. W219232
Each (In a Pack of 10)
SGD4.589(exc. GST)
Eaton xEffect MCB, 1P, 10A Curve B, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-6961
  • Mfr. Part No. 278531 FAZ-B10/1
Each
SGD42.72(exc. GST)
RS PRO HBC Fuse Kit
  • RS Stock No. 267-1856
1 Kit
SGD296.40(exc. GST)
Eaton 70A Tag Fuse, 25mm, 1kV
  • RS Stock No. 282-6207
  • Mfr. Part No. FWE-70A
Each
SGD212.69(exc. GST)
Mersen 90A British Standard Fuse, 17 x 49mm, 690V, 61 → 65.5mm
  • RS Stock No. 304-2710
  • Mfr. Part No. K220970
Each
SGD80.86(exc. GST)
Better World
ABB System Pro M Compact S200M MCB, 2P, 10A Curve B, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 131-911
  • Mfr. Part No. 2CDS272001R0105 S202M-B10
Each
SGD114.32(exc. GST)
Littelfuse 1A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-2931
  • Mfr. Part No. 0213001.MXP
Each (In a Pack of 10)
SGD0.98(exc. GST)
RS PRO 500mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-463
Each (In a Pack of 10)
SGD0.478(exc. GST)
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