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

62 of 999+
Temporarily out of stock
ABB, Tmax XT MCCB 3P 8A, Fixed Mount
  • RS Stock No. 237-6209
  • Mfr. Part No. 1SDA067007R1 XT2N 160 TMD 8A FF
Each
SGD449.50(exc. GST)
In Stock
ABB System Pro M Compact S200M MCB, 3P, 40A Curve B, 440V AC, 10 kA Breaking Capacity
  • RS Stock No. 535-6140
  • Mfr. Part No. 2CDS273001R0405 S203M-B40
Each
SGD154.06(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 32A Curve D, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 527-9633
  • Mfr. Part No. 2CDS253001R0321 S203-D32
Each
SGD122.94(exc. GST)
In Stock
Eaton xEffect MCB, 2P, 10A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3241
  • Mfr. Part No. 278756 FAZ-C10/2
Each
SGD126.80(exc. GST)
In Stock
RS PRO 630mA T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 414-409
Each (In a Pack of 10)
SGD1.678(exc. GST)
Temporarily out of stock
WAGO Electronic Circuit Breaker 10A 24V 787, 2 channels , DIN Rail
  • RS Stock No. 279-4093
  • Mfr. Part No. 787-1662/000-054
Each
SGD284.13(exc. GST)
Temporarily out of stock
Hager NFN MCB, 4P, 63A Curve C, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4728
  • Mfr. Part No. NFN463
Each
SGD637.43(exc. GST)
In Stock
Europa EUC2P EUC MCB, 2P, 4A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6535
  • Mfr. Part No. EUC2P4C
Each
SGD24.79(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 3140 3 Pole 230V Voltage Rating Snap In, 5A Current Rating
  • RS Stock No. 344-5361
  • Mfr. Part No. 3140-F130-P7T1-SGRX-5A
Each
SGD114.29(exc. GST)
In Stock
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS Stock No. 260-8121
  • Mfr. Part No. C40N3
Each
SGD2,114.19(exc. GST)
Temporarily out of stock
Allen Bradley, 140G MCCB 3P 125A, Module Frame Mount
  • RS Stock No. 261-2823
  • Mfr. Part No. 140G-G2C3-C70
Each
SGD498.38(exc. GST)
In Stock
Better World
Siemens SENTRON 5SL6 MCB, 1P, 10A Curve C, 6 kA Breaking Capacity
  • RS Stock No. 202-7139
  • Mfr. Part No. 5SL6110-7
Each
SGD27.86(exc. GST)
Temporarily out of stock
ABB S801S MCB, 1P, 125A, UC-K, 250V DC, 50 kA Breaking Capacity
  • RS Stock No. 140-706
  • Mfr. Part No. 2CCS861001R1647
Each
SGD329.78(exc. GST)
Temporarily out of stock
Schneider Electric Vigi C120 RCD, 125A, 3 Pole, 1000mA
  • RS Stock No. 219-9020
  • Mfr. Part No. A9N18559
Each
SGD1,642.03(exc. GST)
In Stock
Eaton 63A British Standard Fuse, FE, 690 V ac, 500V dc, 63.5mm
  • RS Stock No. 156-8973
  • Mfr. Part No. 63FE
Each
SGD122.80(exc. GST)
In Stock
SIBA 3.15A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3311
  • Mfr. Part No. 70-007-65/3.15A
Each (In a Pack of 10)
SGD0.318(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 3P, 45A Curve C, 277V AC
  • RS Stock No. 256-6764
  • Mfr. Part No. M9F22345
Each
SGD307.00(exc. GST)
In Stock
ABB SMISSLINE TP S400M MCB, 1P, 20A Curve C, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 176-295
  • Mfr. Part No. 2CCS571001R0204 S401M-C20
Each
SGD55.64(exc. GST)
In Stock
Better World
Siemens 5SV3 RCCB, 40A, 4 Pole, 300mA
  • RS Stock No. 200-6018
  • Mfr. Part No. 5SV3644-4
Each
SGD1,091.75(exc. GST)
Temporarily out of stock
ABB, SACE FORMULA MCCB Molded Case Circuit Breaker 1P 16A, Fixed Mount
  • RS Stock No. 231-9297
  • Mfr. Part No. 1SDA074641R1 XT1N 125 TMF 50-500 3p F F
Each
SGD231.46(exc. GST)
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