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

34912 Products showing for Fuses & Circuit Breakers

77 of 999+
In Stock
Better World
Schneider Electric Linergy Busbar, 690V, 54mm Pitch
  • RS Stock No. 608-8214
  • Mfr. Part No. GV2G254
Each
$56.49(exc. GST)
In Stock
Schurter Surface Mount Fuse 3.15A, 250V ac
  • RS Stock No. 270-7958
  • Mfr. Part No. 3405.0171.24
Each
$1.33(exc. GST)
Temporarily out of stock
Schneider Electric 3 Phase Surge Arrester, 75kA, 2000V (Volts), Clip-On Mount
  • RS Stock No. 438-864
  • Mfr. Part No. M9L33480
Each
$2,658.65(exc. GST)
Temporarily out of stock
Hager BDF Series RCCB, 40A, 4 Pole, 30mA, Type F
  • RS Stock No. 597-899
  • Mfr. Part No. BDF840
Each
$990.07(exc. GST)
Temporarily out of stock
Eaton 20A Ceramic Cartridge Fuse, 13 x 29mm
  • RS Stock No. 181-8488
  • Mfr. Part No. SMD20
1 Box of 20
$173.97(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-498
  • Mfr. Part No. 3VA5110-6ED31-0AA0
Each
$2,049.56(exc. GST)
Temporarily out of stock
Eaton 5A T Melamine Cartridge Fuse, 0.41 x 1.5in
  • RS Stock No. 261-726
  • Mfr. Part No. FNQ-R-5
1 Pack of 10
$1,146.33(exc. GST)
Temporarily out of stock
160A Fuse Holder for 135 x 470mm Fuse, 3P, 690V
  • RS Stock No. 263-158
  • Mfr. Part No. EBF00230S8
Each
$217.32(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 4P 150A, Breaking Capacity 100 kA, Clip-On
  • RS Stock No. 438-872
  • Mfr. Part No. NHJL36150M38X
Each
$7,333.93(exc. GST)
In Stock
Osram Surge Protector, 15A, 20kV, Screw Mount Mount
  • RS Stock No. 251-5285
  • Mfr. Part No. SPD-20-275-G2
Each
$36.43(exc. GST)
Temporarily out of stock
Siemens 25A NH Fuse, NH1, 440 - 500V ac/dc
  • RS Stock No. 269-8307
  • Mfr. Part No. 3NA3110
Each (In a Pack of 3)
$28.06(exc. GST)
Temporarily out of stock
Hager RCBO, 25A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type A
  • RS Stock No. 602-207
  • Mfr. Part No. ADM475C
Each
$1,092.65(exc. GST)
Temporarily out of stock
Eaton 250A Ceramic Cartridge Fuse, 150 x 54mm
  • RS Stock No. 254-889
  • Mfr. Part No. 250NHG03BI-400 BUSSMANN 250A 400V GG 03
1 Pack of 3
$110.54(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 260-587
  • Mfr. Part No. 3VA6340-6HM31-0AA0
Each
$6,682.47(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 2P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 257-233
  • Mfr. Part No. 3VA5340-6EC61-0AA0
Each
$7,340.04(exc. GST)
Temporarily out of stock
SENTRON Wire Connector for use with 3VA61/62 Series
  • RS Stock No. 263-717
  • Mfr. Part No. 3VA9243-0JD12
1 Kit
$663.23(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-963
  • Mfr. Part No. 3VA6110-6JQ31-0AA0
Each
$4,888.53(exc. GST)
Temporarily out of stock
Schneider Electric, Compact MCCB 3P 1.25kA, Breaking Capacity 31 kA, Fixed Mount
  • RS Stock No. 354-283
  • Mfr. Part No. C125H3FM
Each
$11,484.68(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 13A Curve B, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 132-100
  • Mfr. Part No. 2CDS272001R0135 S202M-B13
Each
$131.68(exc. GST)
Temporarily out of stock
Schneider Electric Load Centre KQ II B RCCB, 160A, 3P+N Pole
  • RS Stock No. 654-706
  • Mfr. Part No. SE160QRCD
Each
$4,024.13(exc. GST)
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