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

115 of 999+
RS PRO 30A Inline Fuse Holder for ATO/ATC 19x18.6mm Fuse, 32V dc
  • RS Stock No. 284-6488
Each (In a Pack of 5)
$8.714(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-778
  • Mfr. Part No. 3VA6140-8HL31-0AA0
Each
$2,511.55(exc. GST)
Schneider Electric Altivar Process Modular Busbar Kit
  • RS Stock No. 119-414
  • Mfr. Part No. VW3A99ACFCB
Each
$1,211.14(exc. GST)
RS PRO 12A Slow-Blow Ceramic Cartridge Fuse, 6.35 x 32mm
  • RS Stock No. 180-084
1 Pack of 10
$71.45(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 3P, 2A Curve D, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 527-9554
  • Mfr. Part No. 2CDS253001R0021 S203-D2
Each
$198.23(exc. GST)
RS PRO Three Phase Industrial Surge Protector, 40kA, 1.35kV, DIN Rail Mount
  • RS Stock No. 101-792
Each
$1,064.46(exc. GST)
RS PRO 20A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 180-071
1 Pack of 10
$52.62(exc. GST)
RS PRO 3A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 668-6007
Each (In a Pack of 10)
$0.745(exc. GST)
Siemens 5SM28 RCCB, 40A, 4 Pole, Type A, 400V
  • RS Stock No. 328-426
  • Mfr. Part No. 5SM2842-8
Each
$542.15(exc. GST)
Siemens SENTRON 3 Phase Busbar, 400V
  • RS Stock No. 328-330
  • Mfr. Part No. 5ST3785-0
Each
$89.89(exc. GST)
Eaton 2.5A T Melamine Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 261-651
  • Mfr. Part No. LP-CC-2-1/2
1 Pack of 10
$1,063.50(exc. GST)
Siemens SENTRON Positioning Unit for use with For Circuit Breaker
  • RS Stock No. 265-643
  • Mfr. Part No. 8US1998-1DA45
1 Pack of 10
$91.80(exc. GST)
Eaton Eaton Moeller 3 Phase Busbar, 690V
  • RS Stock No. 272-2296
  • Mfr. Part No. 220224 B3.1/3-PKZ4
Each
$92.60(exc. GST)
Eaton 50A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 703-8469
  • Mfr. Part No. C22G50
Each (In a Pack of 10)
$9.517(exc. GST)
onsemi Thermal Fuse +125°C 3 A, 5V
  • RS Stock No. 195-8755
  • Mfr. Part No. NIS6350MT2TXG
Each (In a Pack of 250)
$2.081(exc. GST)
Eaton 10A F Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 412-598
  • Mfr. Part No. TDC180-10A
Each (In a Pack of 10)
$1.734(exc. GST)
Sensata Airpax Airpax Thermal Circuit Breaker - LELB1 Single Pole Panel Mount, 100A Current Rating
  • RS Stock No. 275-0359
  • Mfr. Part No. LELB1-1-51-100.-1-01-V
Each
$231.15(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 600A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-586
  • Mfr. Part No. 3VA6560-6KT42-0AA0
Each
$15,585.01(exc. GST)
Schneider Electric, Compact MCCB 3P 630A, Breaking Capacity 75 kA
  • RS Stock No. 340-874
  • Mfr. Part No. C063B3WM
Each
$8,112.82(exc. GST)
Siemens SENTRON Busbar
  • RS Stock No. 265-556
  • Mfr. Part No. 8US1215-5CS10
Each
$202.21(exc. GST)
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