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

205 of 999+
Hager 16A Cartridge Fuse, 22.2 x 58mm
  • RS Stock No. 250-8638
  • Mfr. Part No. LF516G
Each (In a Pack of 10)
$18.238(exc. GST)
Legrand 1A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 180-6104
  • Mfr. Part No. 0 102 10
Each (In a Box of 10)
$3.63(exc. GST)
Mersen 40A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 188-7397
  • Mfr. Part No. Q200758
Each (In a Pack of 10)
$6.963(exc. GST)
Eaton 63A Rail Mount Fuse Holder for A3 Fuse, 1P, 690V ac
  • RS Stock No. 221-645
  • Mfr. Part No. RS63PWH
Each
$114.10(exc. GST)
Hager MJT MCB, 2P, 10A Curve C, 240 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 144-4949
  • Mfr. Part No. MJT710
Each
$66.48(exc. GST)
Eaton 50A Cartridge Fuses, 22.2 x 58mm
  • RS Stock No. 228-994
  • Mfr. Part No. C22G50S
1 Pack of 10
$232.17(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 1P, 63A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7554
  • Mfr. Part No. 2CDS251001R0635 S201-B63
Each
$39.86(exc. GST)
Siemens ALPHA Assembly Kit for use with 3VA2 Molded Case Circuit Breakers
  • RS Stock No. 628-849
  • Mfr. Part No. 8GK6725-6KK13
Each
$734.80(exc. GST)
Legrand RCBO, 16A Current Rating, 1P + N Poles, 30mA Trip Sensitivity, Type A, RCBO DX3 Range
  • RS Stock No. 338-567
  • Mfr. Part No. 418893
Each
$113.44(exc. GST)
Mersen 40A British Standard Fuse, 17 x 49mm, 690V, 61 → 65.5mm
  • RS Stock No. 238-3997
  • Mfr. Part No. C220963
Each
$104.90(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 260-513
  • Mfr. Part No. 3VA6325-8JP41-0AA0
Each
$11,660.74(exc. GST)
Eaton 125A Tag Fuse, 415V ac, 94mm
  • RS Stock No. 228-793
  • Mfr. Part No. DEO125
1 Pack of 5
$805.57(exc. GST)
ABB BF1602 Busbar
  • RS Stock No. 200-399
  • Mfr. Part No. 1STQ008222A0000
Each
$1,421.35(exc. GST)
Hager NEN MCB, 2P, 10A Curve B, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4962
  • Mfr. Part No. NEN210
Each
$269.71(exc. GST)
Eaton NZM Handle for use with NS2…-NA, NZM2…-NA
  • RS Stock No. 120-806
  • Mfr. Part No. 155484 NZM2-XSH-12-120-NA
Each
$2,420.51(exc. GST)
SENTRON Wire Connector for use with 3VA61/62 Series
  • RS Stock No. 263-998
  • Mfr. Part No. 3VA9244-0JC22
1 Kit
$665.72(exc. GST)
Schurter Thermal Circuit Breaker - RTS 60V Voltage Rating Surface Mount, 0.1A Current Rating
  • RS Stock No. 174-5394
  • Mfr. Part No. 3-104-513
Each (In a Bag of 100)
$4.045(exc. GST)
Schneider Electric, ComPacT MCCB 3P 150A, Fixed Mount
  • RS Stock No. 260-8045
  • Mfr. Part No. C25W3MA150
Each
$7,406.05(exc. GST)
Eaton 10A Tag Fuse, 550V ac
  • RS Stock No. 228-973
  • Mfr. Part No. NSD10
1 Pack of 20
$361.06(exc. GST)
Siemens 200A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 210-6924
  • Mfr. Part No. 3NA7140-6
Each (In a Pack of 3)
$163.173(exc. GST)
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