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

190 of 999+
ABB IEC Range Busbar for use with DDA200, F200, S200
  • RS Stock No. 250-4733
  • Mfr. Part No. 2CDL210001R1009
Each
$10.27(exc. GST)
Hager BF RCD, 63A, 2 Pole, 300mA, Type AC
  • RS Stock No. 144-4866
  • Mfr. Part No. BF264
Each
$811.92(exc. GST)
Bourns 0.11A Resettable Fuse, 230V
  • RS Stock No. 817-1620
  • Mfr. Part No. CMF-SDP35A-2
Each (In a Pack of 10)
$1.495(exc. GST)
ABB Marker Label for use with Busbars
  • RS Stock No. 250-4723
  • Mfr. Part No. 2CDL200002R0010
1 Box of 50
$27.10(exc. GST)
Siemens 63A Bottle Fuse Holder, 3P, 400V ac
  • RS Stock No. 202-7075
  • Mfr. Part No. 5SG5653
Each (In a Pack of 2)
$56.655(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 260-424
  • Mfr. Part No. 3VA6325-7JP31-2AA0
Each
$8,947.38(exc. GST)
Phoenix Contact EC-E Electronic Circuit Breaker 1A 24V EC-E1, 1 channels , DIN Rail
  • RS Stock No. 131-317
  • Mfr. Part No. 0903023
Each (In a Pack of 6)
$182.857(exc. GST)
Schurter Non-Resettable Fuse Kit
  • RS Stock No. 539-3802
  • Mfr. Part No. 0034.9871
Each
$448.75(exc. GST)
Eaton 125mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9447
  • Mfr. Part No. S506-125-R
1 Bag of 1000
$7,503.10(exc. GST)
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 3P 150A, Fixed Mount
  • RS Stock No. 221-1045
  • Mfr. Part No. LV433502
Each
$4,982.16(exc. GST)
Hager HMX MCB, 4P, 10A, 400V AC, 50 Breaking Capacity
  • RS Stock No. 602-238
  • Mfr. Part No. HMX410
Each
$1,472.21(exc. GST)
Schurter 5A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 173-8060
  • Mfr. Part No. 8020.5018.G
1 Box of 1000
$1,170.40(exc. GST)
WJ Furse Copper Earth Bar L. 725mm x W. 90mm x H. 96mm 10 Ways
  • RS Stock No. 124-2502
  • Mfr. Part No. 7TCA083670R0647 LK243-10
Each
$694.11(exc. GST)
250A Tag Fuse, 190 x 280mm, 690V
  • RS Stock No. 262-631
  • Mfr. Part No. EBH113TBM1
Each
$494.45(exc. GST)
Legrand 5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 266-3068
  • Mfr. Part No. 0 102 50
1 Box of 10
$35.45(exc. GST)
SIBA 500mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3214
  • Mfr. Part No. 70-007-33/0.5A
Each (In a Pack of 10)
$0.449(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 874-4200
  • Mfr. Part No. 3VA1116-4ED36-0AA0
Each
$1,696.13(exc. GST)
ABB System Pro M Compact S200M MCB, 1P, 32A Curve C, 253V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 535-4188
  • Mfr. Part No. 2CDS271001R0324 S201M-C32
Each
$51.55(exc. GST)
Inventronics Surge Protector, 5kA, 10kV, Surface Mount Mount
  • RS Stock No. 285-370
  • Mfr. Part No. PU-10KD05KBTA
Each
$19.94(exc. GST)
Siemens SENTRON Auxiliary Contact for use with 3VA4/5/6
  • RS Stock No. 272-0236
  • Mfr. Part No. 3VA9978-0AA13
Each
$383.96(exc. GST)
1
190
1758
Results per page

Related links