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

47304 Products showing for Fuses & Circuit Breakers

5 of 999+
In Stock
Eaton 10A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 414-623
  • Mfr. Part No. NIT10
Each (In a Pack of 5)
TWD237.80(exc. GST)
In Stock
Better World
ABB SN201 MCB, 1P, 4A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 231-9970
  • Mfr. Part No. 2CSS255101R0044 SN201-C4 -
Each
TWD1,360.00(exc. GST)
In Stock
Legrand DX Range DX3 MCB, 1P, 20A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 731-9663
  • Mfr. Part No. 4 076 55
Each
TWD1,433.00(exc. GST)
In Stock
Littelfuse 5A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4707
  • Mfr. Part No. 0215005.MXP
Each (In a Pack of 10)
TWD37.60(exc. GST)
In Stock
Mersen 10A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2785
  • Mfr. Part No. H213102
1 Box of 10
TWD1,174.00(exc. GST)
Temporarily out of stock
Eaton xPole - PXL PXL MCB, 1P, 32A Curve C, 440V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 253-929
  • Mfr. Part No. 236690 PXL-C32-DC
Each
TWD3,280.00(exc. GST)
In Stock
Better World
Siemens Sentron 5SY6 MCB, 1P, 4A Curve C, 230V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 521-4951
  • Mfr. Part No. 5SY6104-7
Each
TWD773.00(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 6A Curve C, 277V AC
  • RS Stock No. 256-6797
  • Mfr. Part No. M9F52206
Each
TWD8,672.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 3 Phase Busbar, 230V, 26.5mm Pitch
  • RS Stock No. 187-5231
  • Mfr. Part No. 5ST3777-0
Each
TWD10,186.00(exc. GST)
In Stock
Littelfuse 10A Red Blade Car Fuse, 32V dc
  • RS Stock No. 787-4101P
  • Mfr. Part No. 0287010.PXCN
Each (Supplied in a Bag)
TWD8.60(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 10A, 125V
  • RS Stock No. 738-2867
  • Mfr. Part No. 0154010.DR
Each (In a Pack of 10)
TWD68.10(exc. GST)
In Stock
Mersen 4A Slow-Blow Ceramic Cartridge Fuse, 8.5 x 31.5mm
  • RS Stock No. 247-2945
  • Mfr. Part No. X222959
1 Box of 10
TWD606.00(exc. GST)
In Stock
Socomec 40A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 122-5276
  • Mfr. Part No. 60220040
Each (In a Pack of 10)
TWD90.80(exc. GST)
Temporarily out of stock
ABB Tmax XT Shunt Opening Release for use with XT1, XT4
  • RS Stock No. 237-6050
  • Mfr. Part No. 1SDA066327R1 SOR-C XT1..XT4 F/P 480-525
Each
TWD3,765.00(exc. GST)
Temporarily out of stock
RS PRO PC Board Non Resettable Fuse, Axial 3A, 250V ac
  • RS Stock No. 764-9598
Each (In a Pack of 10)
TWD6.70(exc. GST)
In Stock
SIBA 16A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 421-637
  • Mfr. Part No. 20-000-13/16E1
Each (In a Pack of 3)
TWD241.00(exc. GST)
Temporarily out of stock
Schurter 30A Rail Mount Fuse Holder for 10 x 38mm Fuse, 2P, 600V ac
  • RS Stock No. 712-4796P
  • Mfr. Part No. 0091.0002
Each (Supplied in a Box)
TWD893.00(exc. GST)
In Stock
Mersen 2A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2892
  • Mfr. Part No. S216653
1 Box of 10
TWD1,269.00(exc. GST)
Unavailable
Schurter 1.25A Slow-Blow Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-7291
  • Mfr. Part No. 7030.3330
Each (In a Pack of 5)
TWD275.40(exc. GST)
In Stock
Eaton 32A Rail Mount Fuse Holder for A2 Fuse, 1P, 690V ac
  • RS Stock No. 413-917
  • Mfr. Part No. RS32H
Each
TWD2,698.00(exc. GST)
1
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