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

35151 Products showing for Fuses & Circuit Breakers

273 of 999+
In Stock
Eaton 8A Bolt Fixing Photovoltaic Fuse, 1000V dc, 49.7mm
  • RS Stock No. 703-8260
  • Mfr. Part No. PV-8A10-T
Each
$118.90(exc. GST)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 75 A
  • RS Stock No. 117-002
  • Mfr. Part No. KV FC 18
Each
$75.57(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 150A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 268-602
  • Mfr. Part No. 3VA6115-5KQ41-2AA0
Each
$7,714.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 400A, Fixed Mount
  • RS Stock No. 260-8174
  • Mfr. Part No. C40W45E400
Each
$18,313.71(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-966
  • Mfr. Part No. 3VA6110-6JT41-0AA0
Each
$4,552.19(exc. GST)
Temporarily out of stock
Eaton 32A Fuse Holder for 60 x 94 x 25mm Fuse, 1P, 690V
  • RS Stock No. 228-941
  • Mfr. Part No. CM32FC
1 Pack of 10
$454.83(exc. GST)
Temporarily out of stock
Hager CFB RCCB, 63A, 4 Pole, 300mA, Type B, 230 → 400V ac
  • RS Stock No. 597-932
  • Mfr. Part No. CFB463F
Each
$2,831.75(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 260-7983
  • Mfr. Part No. C25R46E100
Each
$10,663.61(exc. GST)
Temporarily out of stock
Phoenix Contact Thermomagnetic Device Circuit Breaker Thermal Circuit Breaker - CB Single Pole 50V dc Voltage Rating,
  • RS Stock No. 212-8788
  • Mfr. Part No. 2800860
Each
$96.13(exc. GST)
In Stock
Littelfuse 6.3A Base Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 787-4243
  • Mfr. Part No. 64700001003
Each (In a Pack of 5)
$1.322(exc. GST)
Temporarily out of stock
Wickmann Resettable Fuse, 24V dc
  • RS Stock No. 174-0924
  • Mfr. Part No. RF1256-000
Each (In a Pack of 500)
$0.329(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 250A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 428-702
  • Mfr. Part No. NJGF36250U53XTW
Each
$10,191.86(exc. GST)
Temporarily out of stock
Better World
Schneider Electric 690 V ac, 750V dc Circuit Trip for use with Compact NSX 100/160 Circuit Breakers
  • RS Stock No. 212-0230
  • Mfr. Part No. LV429053
Each
$332.96(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Assembly Kit for use with N(S)4(-4), NZM4(-4)
  • RS Stock No. 258-220
  • Mfr. Part No. 289807 NZM4-XS-R
Each
$1,245.55(exc. GST)
In Stock
RS PRO 5A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-693
Each (In a Pack of 10)
$1.91(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 25A, Fixed Mount
  • RS Stock No. 260-7615
  • Mfr. Part No. C11H3TM025B
Each
$1,452.31(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 3P 100A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 178-7914
  • Mfr. Part No. LV426702
Each
$1,539.54(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 200A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 256-580
  • Mfr. Part No. 3VA5320-7GF41-0AA0
Each
$11,750.49(exc. GST)
Temporarily out of stock
Eaton 3A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8213
  • Mfr. Part No. PV-3A10F
Each
$130.09(exc. GST)
In Stock
Bourns Surface Mount Fuse 6A, 48V dc
  • RS Stock No. 245-9229P
  • Mfr. Part No. SF-1206F600M-2
Each (Supplied on a Reel)
$1.026(exc. GST)
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