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

34933 Products showing for Fuses & Circuit Breakers

13 of 999+
1-pole circuit breaker, 12A
  • RS Stock No. 577-473
  • Mfr. Part No. 1658-G21-02-P10-12A
Each
$9.94(exc. GST)
Littelfuse 1.25A Resettable Fuse, 240V ac/dc
  • RS Stock No. 869-7384P
  • Mfr. Part No. LVR125S-240
Each (Supplied in a Box)
$1.284(exc. GST)
Littelfuse 10A Red Blade Car Fuse, 32V dc
  • RS Stock No. 787-4101
  • Mfr. Part No. 0287010.PXCN
Each (In a Pack of 10)
$0.623(exc. GST)
Mersen 16A D01 Neozed Fuse, gG, 400V ac
  • RS Stock No. 377-0257
  • Mfr. Part No. R223023
Each (In a Pack of 5)
$4.084(exc. GST)
Eaton 315A British Standard Fuse, B3, 660V, 111mm
  • RS Stock No. 182-1517
  • Mfr. Part No. TKF315M355
Each
$980.55(exc. GST)
Better World
Schneider Electric Acti 9 iC60N MCB, 1P, 16A Curve C, 100 → 133V AC, 12 → 48V DC, 6 kA Breaking Capacity
  • RS Stock No. 790-8866
  • Mfr. Part No. A9F44116
Each
$20.07(exc. GST)
Eaton 15A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 848-2687
  • Mfr. Part No. ABC-15-R
Each
$2.28(exc. GST)
SIBA 800mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3226
  • Mfr. Part No. 70-007-33/0.8A
Each (In a Pack of 10)
$0.449(exc. GST)
Wickmann 1A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 174-0640
  • Mfr. Part No. 0312001.MXP
Each (In a Pack of 20)
$0.609(exc. GST)
Schneider Electric Acti9 iID RCCB, 63A, 4 Pole, 300mA, Type B-SI, 400V ac
  • RS Stock No. 335-137
  • Mfr. Part No. A9Z65463
Each
$3,606.99(exc. GST)
Murrelektronik Limited Mico Pro Electronic Circuit Breaker 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10A 12 / 24V MICO, 1
  • RS Stock No. 270-9601
  • Mfr. Part No. 9000-41091-0101000
Each
$193.26(exc. GST)
Socomec 50A Cartridge Fuse, 22.2 x 58mm
  • RS Stock No. 252-5322
  • Mfr. Part No. 60620050
Each (In a Pack of 10)
$22.05(exc. GST)
Schneider Electric Acti 9 3 Phase Distribution Board, 72 Way, 250 A
  • RS Stock No. 230-6808
  • Mfr. Part No. MB272EM2
Each
$5,381.75(exc. GST)
Schurter 25A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 703-2672
  • Mfr. Part No. 8020.0606.G
Each (In a Pack of 10)
$2.519(exc. GST)
Mersen 400A Rail Mount Fuse Holder for NH2 Fuse, 3P, 690V ac
  • RS Stock No. 136-0489
  • Mfr. Part No. W1002129 / 1.000.504
1 Box of 1
$745.56(exc. GST)
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 16A Curve C, 500V DC
  • RS Stock No. 772-1530
  • Mfr. Part No. A9N61531
Each
$199.47(exc. GST)
Eaton IKA Standard Distribution Board Distribution Board
  • RS Stock No. 125-765
  • Mfr. Part No. 174209 IKA-1/18-OT
Each
$191.72(exc. GST)
Eaton Handle, Lockable for use with N(S)2(-4) Series, NZM2(-4) Switch, PN2(-4) Series
  • RS Stock No. 537-5719
  • Mfr. Part No. 260174 NZM2-XTVDV
Each
$348.98(exc. GST)
Littelfuse 0.125A Resettable Fuse, 30V dc
  • RS Stock No. 787-4186
  • Mfr. Part No. 1206L012WR
Each (In a Pack of 10)
$0.55(exc. GST)
ABB AC Switch Disconnectors Accessories Shaft for use with Switch Disconnectors
  • RS Stock No. 259-9748
  • Mfr. Part No. 1SCA108250R1001
Each
$9.66(exc. GST)
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