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

41 of 999+
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 20A Curve B, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3168
  • Mfr. Part No. A9F53120
Each
SGD57.79(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7817
  • Mfr. Part No. C16N4TM160
Each
SGD2,457.68(exc. GST)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 1.6kA, Fixed Mount
  • RS Stock No. 232-0159
  • Mfr. Part No. 1SDA062994R1 T7S 1600A PR231-LS/I FF
Each
SGD6,105.45(exc. GST)
In Stock
SIBA 3.15A F Glass Cartridge Fuse, 5 x 30mm
  • RS Stock No. 361-8193
  • Mfr. Part No. 171530.3,15
Each (In a Pack of 10)
SGD2.839(exc. GST)
Temporarily out of stock
Eaton Three Phase Surge Protector, 40kA, 1.4kV, DIN Rail Mount
  • RS Stock No. 120-749
  • Mfr. Part No. 167596 SPCT2-280/4
Each
SGD477.93(exc. GST)
In Stock
ABB System Pro M Compact S200 MCB, 4P, 40A Curve C, 440V AC, 10 kA Breaking Capacity
  • RS Stock No. 183-3646
  • Mfr. Part No. 2CDS254001R0404
Each
SGD279.83(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-9461
  • Mfr. Part No. C10H3MA100
Each
SGD1,094.28(exc. GST)
Temporarily out of stock
Eaton xPole - PXL PXL MCB, 1P, 6A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 254-408
  • Mfr. Part No. 236161 PXL-C6/1N
Each
SGD102.13(exc. GST)
In Stock
Schneider Electric 220 - 440V ac Earth Leakage Add-on Protection Module Circuit Trip for use with ComPact (ComPact
  • RS Stock No. 276-9255
  • Mfr. Part No. LV429489
Each
SGD2,299.41(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 3140 3 Pole 230V Voltage Rating Snap In, 2.5A Current Rating
  • RS Stock No. 729-2824
  • Mfr. Part No. 3140-F230-P7T1-SGRX-2.5A
Each
SGD108.02(exc. GST)
In Stock
SIBA 50A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 893-8521
  • Mfr. Part No. 50-140-06/50A
Each
SGD36.27(exc. GST)
In Stock
SIBA 20A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 768-6125
  • Mfr. Part No. 5021526.20
Each
SGD22.92(exc. GST)
Temporarily out of stock
Eaton 63A Rail Mount Fuse Holder Base, 3P, 690V ac
  • RS Stock No. 231-652
  • Mfr. Part No. 110395 DIII-SO/63/3-R-PS
1 Pack of 10
SGD253.28(exc. GST)
Temporarily out of stock
Eaton RCBO, 20A Current Rating, 2P Poles, 100mA Trip Sensitivity, Type A, Type C, FRBdM Range
  • RS Stock No. 121-032
  • Mfr. Part No. 168286 FRBDM-C20/1N/01-G/A
Each
SGD344.10(exc. GST)
Temporarily out of stock
40A Tag Fuse, 440V ac
  • RS Stock No. 263-427
  • Mfr. Part No. XS40
1 Pack of 10
SGD517.97(exc. GST)
Temporarily out of stock
ABB F200 RCCB, 40A, 2 Pole, 100mA, Type AC, 230V ac
  • RS Stock No. 231-9898
  • Mfr. Part No. 2CSF202001R2400 F202 AC-40/0.1
Each
SGD228.22(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 200A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-280
  • Mfr. Part No. 3VA5220-5EC31-0AA0
Each
SGD1,916.50(exc. GST)
Temporarily out of stock
Better World
ABB SN201 MCB, 1P, 32A Curve C
  • RS Stock No. 237-1426
  • Mfr. Part No. 2CSS255101R0324
Each
SGD62.62(exc. GST)
In Stock
Littelfuse 2A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4684
  • Mfr. Part No. 0215002.MXP
Each (In a Pack of 10)
SGD2.212(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - 209 3 Pole 240V ac Voltage Rating Panel Mount, 30A Current Rating
  • RS Stock No. 275-0058
  • Mfr. Part No. 209-3-1-61-4-9-30-V
1 Box of 5
SGD1,901.84(exc. GST)
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