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

238 of 999+
Temporarily out of stock
Schneider Electric Horizontal Transport Length, 0.5 → 1.9m, 250A, Canalis Series
  • RS Stock No. 119-370
  • Mfr. Part No. KSA250ET43A
Each
$4,781.82(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 4P, 2A, Type A, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-625
  • Mfr. Part No. 5SY4602-5
Each
$526.04(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 1P, 10A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1252
  • Mfr. Part No. 5SY4110-8
Each
$138.08(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IUGN6 Single Pole Panel Mount, 30A Current Rating
  • RS Stock No. 275-0285
  • Mfr. Part No. IUGN6-1-62-30.0
Each
$175.38(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 268-526
  • Mfr. Part No. 3VA6115-5HM31-2AA0
Each
$4,238.22(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 260-391
  • Mfr. Part No. 3VA6225-8KQ41-0AA0
Each
$10,853.47(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-3671
  • Mfr. Part No. 1SDA071644R1
Each
$17,953.03(exc. GST)
In Stock
Eaton 63A Rail Mount Fuse Holder
  • RS Stock No. 418-653
  • Mfr. Part No. RS63LOCK
Each (In a Pack of 3)
$174.427(exc. GST)
Temporarily out of stock
Schneider Electric, Compact MCCB 3P 1.25kA, Fixed Mount
  • RS Stock No. 247-1782
  • Mfr. Part No. 33351
Each
$6,406.62(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA, Cable Mount
  • RS Stock No. 249-174
  • Mfr. Part No. 3VA6610-6KL46-0AA0
Each
$26,012.39(exc. GST)
Temporarily out of stock
40A Tag Fuse, 27 x 129mm, 0.46/0.66kV, 111mm
  • RS Stock No. 261-982
  • Mfr. Part No. TBC40
1 Pack of 20
$1,585.08(exc. GST)
Temporarily out of stock
Hager Push Button Circuit Trip for use with Modular Devices
  • RS Stock No. 144-4657
  • Mfr. Part No. SVN391
Each
$134.15(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 4P 40A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-134
  • Mfr. Part No. BGL46040LU
Each
$2,818.00(exc. GST)
Temporarily out of stock
Eaton NZM Undervoltage Release for use with Circuit Breaker
  • RS Stock No. 255-719
  • Mfr. Part No. 259539 NZM1-XUHIV208-240AC
Each
$425.52(exc. GST)
In Stock
Schurter SMD Non Resettable Fuse 10A, 125 V dc, 250V ac
  • RS Stock No. 173-8124
  • Mfr. Part No. 3403.0176.24
1 Reel of 2000
$2,533.59(exc. GST)
Temporarily out of stock
Eaton PKE Electronic Circuit Breaker 32A
  • RS Stock No. 103-962
  • Mfr. Part No. 138261 PKE-XTUW-32
Each
$348.17(exc. GST)
In Stock
ABB S-ARC1 M MCB, 1+N, 6A Curve B, 240V AC, 10 kA Breaking Capacity
  • RS Stock No. 175-9933
  • Mfr. Part No. 2CSA275901R9065 S-ARC1 M B6
Each
$533.90(exc. GST)
In Stock
Socomec 50A Rail Mount Fuse Holder for 14 x 51mm Fuse, 2P, 690V
  • RS Stock No. 233-3332
  • Mfr. Part No. 57025012
Each (In a Pack of 3)
$144.683(exc. GST)
Temporarily out of stock
Clipsal Electrical MAX9 MX9MC MCB, 3P, 2A, 415V AC, 6000 A Breaking Capacity
  • RS Stock No. 282-2954
  • Mfr. Part No. MX9MC332
Each
$57.51(exc. GST)
Temporarily out of stock
Siemens 230V ac Undervoltage Release Circuit Trip for use with 3RV2 Series Circuit Breakers
  • RS Stock No. 706-1967
  • Mfr. Part No. 3RV2902-2AP0
Each
$160.57(exc. GST)
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