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

91 of 999+
Limited stock
Better World
Siemens RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Sentron Range
  • RS Stock No. 772-1183
  • Mfr. Part No. 5SU1356-7KK06
Each
SGD261.50(exc. GST)
Temporarily out of stock
Schneider Electric EZ9R RCCB, 63A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-804
  • Mfr. Part No. EZ9R46263
Each
SGD93.53(exc. GST)
Temporarily out of stock
ABB SU200 M MCB, 1P, 35A Curve C, 277V AC, 48V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-127
  • Mfr. Part No. 2CDS271337R0354
Each
SGD90.08(exc. GST)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 32A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9730
  • Mfr. Part No. LV510332
Each
SGD270.22(exc. GST)
Temporarily out of stock
ETA Thermal Circuit Breaker - 3120-N 5 Pole 50 V DC, 240 V AC Voltage Rating, 12A Current Rating
  • RS Stock No. 210-2112
  • Mfr. Part No. 3120-N554-P7T1-W19DG4-12A
Each
SGD52.49(exc. GST)
Last RS stock
Phoenix Contact Non Resettable Fuse 1A, 250V
  • RS Stock No. 131-153
  • Mfr. Part No. 2901003
Each
SGD32.00(exc. GST)
In Stock
RS PRO Thermal Circuit Breaker - Single Pole 250V ac Voltage Rating Plug In, 500mA Current Rating
  • RS Stock No. 262-4259
1 Box of 2
SGD78.20(exc. GST)
Temporarily out of stock
Schneider Electric Busbar Tap-Off Unit with Circuit Breaker, Canalis Series
  • RS Stock No. 207-300
  • Mfr. Part No. KSB250DC4SP
Each
SGD2,473.54(exc. GST)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 4P, Fixed Mount
  • RS Stock No. 250-4060
  • Mfr. Part No. 1SDA054324R1
Each
SGD4,107.57(exc. GST)
In Stock
Better World
ABB Compact Home SH200 MCB, 1P, 40A Curve B, 440V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 539-8194
  • Mfr. Part No. 2CDS211001R0405 SH201-B40
Each
SGD26.64(exc. GST)
Temporarily out of stock
Leitungsschutzschalter Resi9 1P, 10A, C
  • RS Stock No. 537-866
  • Mfr. Part No. R9F24110
Each
SGD39.58(exc. GST)
Last RS stock
Eaton 1A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7128
  • Mfr. Part No. BK1-TDC11-3-R
Each
SGD5.00(exc. GST)
In Stock
Littelfuse PC Board Non Resettable Fuse, Axial 4A, 125V ac/dc
  • RS Stock No. 125-6894
  • Mfr. Part No. 0251004.HAT1L
Each (In a Pack of 10)
SGD1.618(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 5A Curve C, 250V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3161
  • Mfr. Part No. A9N61505
Each
SGD104.83(exc. GST)
In Stock
RS PRO RC Suppressor Circuit for use with Contactors
  • RS Stock No. 277-8527
Each
SGD13.34(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 6A Curve C, 500V DC
  • RS Stock No. 772-1515
  • Mfr. Part No. A9N61526
Each
SGD142.98(exc. GST)
In Stock
RS PRO 2A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 414-033
Each (In a Pack of 10)
SGD1.975(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 630A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 260-8223
  • Mfr. Part No. C63N32D630
Each
SGD8,193.33(exc. GST)
In Stock
RS PRO 6A Slotted Tag Fuse, A1, 250 V dc, 415V ac, 44.5mm
  • RS Stock No. 221-3702
Each (In a Pack of 10)
SGD5.188(exc. GST)
In Stock
Mersen 2.5A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 270-2999
  • Mfr. Part No. A085376
Each (In a Box of 10)
SGD1.804(exc. GST)
1
91
2456
Results per page

Related links