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

1729 of 999+
Schneider Electric EasyPact Electronic Circuit Breaker 100A, Plug In
  • RS Stock No. 122-439
  • Mfr. Part No. LV516461P
Each
$395.52(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-404
  • Mfr. Part No. 3VA6140-8KL41-0AA0
Each
$5,471.60(exc. GST)
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Dip LSI, 3 channels
  • RS Stock No. 259-4381
  • Mfr. Part No. 1SDA072562R1
Each
$50,588.07(exc. GST)
Schneider Electric RCBO, 25A Current Rating, 3P Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 212-096
  • Mfr. Part No. A9D17325
Each
$1,287.57(exc. GST)
Bourns Surface Mount Fuse 750mA, 65V dc
  • RS Stock No. 245-9238P
  • Mfr. Part No. SF-1206SA075M-2
Each (Supplied on a Reel)
$1.406(exc. GST)
Schneider Electric, PowerPact MCCB 3P 600A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 341-453
  • Mfr. Part No. NLLL36600U31X
Each
$30,849.07(exc. GST)
Schneider Electric Resi9 R9F2 MCB, 3P, 63A Curve B, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-087
  • Mfr. Part No. R9F23363
Each
$490.63(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-522
  • Mfr. Part No. 3VA6140-7KM31-2AA0
Each
$11,446.68(exc. GST)
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA
  • RS Stock No. 249-143
  • Mfr. Part No. 3VA6610-6KT42-0AA0
Each
$24,891.20(exc. GST)
Siemens ALPHA Distribution Board
  • RS Stock No. 629-323
  • Mfr. Part No. 8GK1383-2KK35
Each
$1,940.38(exc. GST)
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 3 channels
  • RS Stock No. 259-4420
  • Mfr. Part No. 1SDA072600R1
Each
$59,694.65(exc. GST)
Schneider Electric Acti9 iC60 RCCB, 25A, 2 Pole, 300mA, Type C, 220 → 240V ac
  • RS Stock No. 110-284
  • Mfr. Part No. A9D50225
Each
$1,893.14(exc. GST)
Lovato 3 Phase Surge Protector, 50kA
  • RS Stock No. 216-8304
  • Mfr. Part No. SG23PA300
Each
$550.77(exc. GST)
Schneider Electric Multi9 M9F1 MCB, 4P, 40A Curve C, 440V AC, 250V DC, 6 kA Breaking Capacity
  • RS Stock No. 212-192
  • Mfr. Part No. M9F11440
Each
$673.98(exc. GST)
Schneider Electric EasyPact Electronic Circuit Breaker 63A, Fixed
  • RS Stock No. 122-502
  • Mfr. Part No. LV510545
Each
$563.23(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4699
  • Mfr. Part No. 3VA2163-0KP46-0AA0
Each
$5,562.67(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9685
  • Mfr. Part No. 3VA11106FF420AA0
Each
$1,737.21(exc. GST)
Siemens ALPHA Base for use with ALPHA 630 DIN
  • RS Stock No. 629-094
  • Mfr. Part No. 8GK9902-0KK13
Each
$514.50(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 3 channels
  • RS Stock No. 259-4115
  • Mfr. Part No. 1SDA072223R1
Each
$10,216.24(exc. GST)
Lovato 1 Phase Surge Protector, 15kA
  • RS Stock No. 216-8308
  • Mfr. Part No. SG2C1NA320
Each
$313.40(exc. GST)
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