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

53 of 999+
In Stock
Europa EUC2P EUC MCB, 2P, 40A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6566
  • Mfr. Part No. EUC2P40C
Each
SGD26.82(exc. GST)
In Stock
Legrand 32A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 293-8250
  • Mfr. Part No. 0 133 32
Each (In a Pack of 10)
SGD4.554(exc. GST)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 250-4151
  • Mfr. Part No. 1SDA054421R1
Each
SGD6,055.28(exc. GST)
In Stock
Schurter Thermal Circuit Breaker - TA45 2 Pole 60 V dc, 240V ac Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 868-9169
  • Mfr. Part No. 4430.2078
Each
SGD49.62(exc. GST)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 100A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9718
  • Mfr. Part No. LV510307
Each
SGD234.99(exc. GST)
Temporarily out of stock
Eaton RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, Type B, FRBm6 Range
  • RS Stock No. 123-629
  • Mfr. Part No. 170718 FRBM6-B40/2/003-LIA
Each
SGD347.95(exc. GST)
In Stock
Eaton 15A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 480V
  • RS Stock No. 225-8218
  • Mfr. Part No. BK-HVP-HH-R
Each (In a Pack of 5)
SGD15.108(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 63A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 255-571
  • Mfr. Part No. 265712 NZMB1-M63
Each
SGD552.66(exc. GST)
In Stock
Wickmann 60A Inline Fuse Holder, 58V dc
  • RS Stock No. 174-0617
  • Mfr. Part No. FHJC1002G
1 Pack of 1
SGD18.22(exc. GST)
In Stock
Eaton MCB, 1+N, 2A Curve C
  • RS Stock No. 230-1105
  • Mfr. Part No. 109125 PLGC4-C2/1N
Each
SGD24.46(exc. GST)
In Stock
Eaton 400A Centred Tag Fuse, NH2, 690V ac
  • RS Stock No. 182-1368
  • Mfr. Part No. 170M5808D
Each (In a Box of 3)
SGD439.007(exc. GST)
Temporarily out of stock
ABB Tmax T Extended Front Terminal for use with MCCB
  • RS Stock No. 232-0125
  • Mfr. Part No. 1SDA055039R1 T5 8PCS
Each
SGD324.09(exc. GST)
In Stock
Siemens 63A D02 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1130
  • Mfr. Part No. 5SE2363
Each (In a Pack of 10)
SGD6.095(exc. GST)
Temporarily out of stock
Better World
Siemens RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type B, Sentron Range
  • RS Stock No. 243-6138
  • Mfr. Part No. 5SU1324-6FA40
Each
SGD288.88(exc. GST)
In Stock
ABB Tmax XT Changeover Contact for use with Circuit Breaker
  • RS Stock No. 232-0184
  • Mfr. Part No. 1SDA066433R1 AUX-C 2Q+1SY 250V XT1..XT4
Each
SGD159.55(exc. GST)
In Stock
RS PRO 2A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9771
Each (In a Pack of 10)
SGD0.691(exc. GST)
In Stock
Better World
Schneider Electric PowerPact Distribution Board, 18 Way, 800 A
  • RS Stock No. 247-2145
  • Mfr. Part No. MGPCM18R
Each
SGD3,192.78(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 1180 Single Pole 250V Voltage Rating DIN Rail Mount, 2A Current Rating
  • RS Stock No. 458-8683
  • Mfr. Part No. 1180-01-2A
Each
SGD39.33(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 35 kA
  • RS Stock No. 249-119
  • Mfr. Part No. 3VA6610-6HM32-0AA0
Each
SGD11,411.34(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 MCB, 2P, 2A Curve B, 10 kA Breaking Capacity
  • RS Stock No. 219-9107
  • Mfr. Part No. M9F21202
Each
SGD276.24(exc. GST)
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