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

306 of 999+
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-467
  • Mfr. Part No. 3VA6140-8KT41-2AA0
Each
$6,929.15(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-445
  • Mfr. Part No. 3VA6580-7HL46-0AA0
Each
$17,872.33(exc. GST)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 500mA, 125V ac/dc
  • RS Stock No. 738-3078P
  • Mfr. Part No. 0259.500T
Each (Supplied in a Bag)
$3.86(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7943
  • Mfr. Part No. C25N3TM160
Each
$3,828.18(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 500A, Fixed Mount
  • RS Stock No. 260-8259
  • Mfr. Part No. C63W32M500
Each
$13,722.03(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 3130 3 Pole 240V Voltage Rating Snap In, 16A Current Rating
  • RS Stock No. 729-2815
  • Mfr. Part No. 3130-F130-P7T1-W02Q-16A
Each
$131.57(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-871
  • Mfr. Part No. 3VA6560-5HL42-2AA0
Each
$10,943.16(exc. GST)
Temporarily out of stock
Eaton NZM Undervoltage Release for use with Circuit Breaker
  • RS Stock No. 254-106
  • Mfr. Part No. 259537 NZM1-XUHIV110-130AC
Each
$425.52(exc. GST)
Temporarily out of stock
Siemens 3RV1935 Busbar for use with Circuit-Breakers 3RV2
  • RS Stock No. 272-0031
  • Mfr. Part No. 3RV19353B
Each
$170.38(exc. GST)
In Stock
Bulgin 13A Panel Mount Fuse Holder for 6.3 x 25mm Fuse, 1P, 250V ac
  • RS Stock No. 408-397
  • Mfr. Part No. FX0416
Each
$22.61(exc. GST)
Temporarily out of stock
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 170-666
  • Mfr. Part No. 2804649
Each (In a Pack of 10)
$269.96(exc. GST)
Temporarily out of stock
Eaton NZM Circuit Breaker for use with Circuit Breaker
  • RS Stock No. 246-853
  • Mfr. Part No. 191604 NZMN3-VX630
Each
$6,810.62(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 250-008
  • Mfr. Part No. 3VA6560-6JT36-2AA0
Each
$14,486.23(exc. GST)
Temporarily out of stock
RS PRO 60A Slotted Tag Fuse, 17.4 x 42mm, 240V, 42mm
  • RS Stock No. 188-4502
Each (In a Box of 200)
$43.507(exc. GST)
Temporarily out of stock
Hager NGT MCB, 3P, 10A, 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4785
  • Mfr. Part No. NGT310
Each
$387.63(exc. GST)
In Stock
Eaton 25A Bolted Tag Fuse, 240V ac, 35mm
  • RS Stock No. 181-8759
  • Mfr. Part No. STD25
Each
$18.41(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Linergy Busbar, 690V
  • RS Stock No. 221-0905
  • Mfr. Part No. GV3G264
Each
$109.16(exc. GST)
In Stock
Eaton 6A T Cartridge Fuse, 21 x 57mm
  • RS Stock No. 773-3536
  • Mfr. Part No. LPJ-6SP
Each
$162.91(exc. GST)
In Stock
Eaton Fuse Holder Locking Kit
  • RS Stock No. 262-566
  • Mfr. Part No. RS20LOCK
1 Pack of 10
$457.89(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 225A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 257-457
  • Mfr. Part No. 3VA5322-5EF41-0AA0
Each
$6,678.08(exc. GST)
1
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