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

4 of 999+
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
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)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 4A Curve D, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 527-9447
  • Mfr. Part No. 2CDS251001R0041 S201-D4
Each
TWD638.00(exc. GST)
In Stock
Littelfuse 1A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 769-0063
  • Mfr. Part No. 0313001.HXP
Each (In a Pack of 10)
TWD28.10(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)
Temporarily out of stock
Better World
ABB SN201 MCB, 2P, 6A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 231-9972
  • Mfr. Part No. 2CSS255101R0064 SN201-C6 -
1 Box of 1
TWD1,360.00(exc. GST)
In Stock
RS PRO 10A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 414-061
Each (In a Pack of 10)
TWD39.50(exc. GST)
In Stock
Littelfuse 6.3A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4713
  • Mfr. Part No. 021506.3MXP
Each (In a Pack of 10)
TWD37.10(exc. GST)
In Stock
Siemens SENTRON 2 Phase Busbar, 18mm Pitch
  • RS Stock No. 124-3140
  • Mfr. Part No. 5ST3704
Each
TWD916.00(exc. GST)
In Stock
Eaton xEffect MCB, 3P, 6A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3412
  • Mfr. Part No. 102244 FAZ-C6/3-NA
Each
TWD5,288.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 A9N1 MCB, 2P, 125A Curve C, 440V AC, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 219-8297
  • Mfr. Part No. A9N18459
Each
TWD13,249.00(exc. GST)
In Stock
ABB DDA202 RCD, 63A, 2 Pole, 30mA
  • RS Stock No. 231-9888
  • Mfr. Part No. 2CSB202001R1630 DDA202 AC-63/0.03
Each
TWD5,089.00(exc. GST)
In Stock
SIBA 500mA F Glass Cartridge Fuse, 5 x 30mm
  • RS Stock No. 361-8159
  • Mfr. Part No. 171530.0,5
Each (In a Pack of 10)
TWD50.70(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 3P, 32A Curve C, 100 → 130V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9166
  • Mfr. Part No. A9F77332
Each
TWD4,973.00(exc. GST)
In Stock
Schurter Fuse Holder Fusedrawer
  • RS Stock No. 867-6848
  • Mfr. Part No. 4303.2401
Each
TWD146.00(exc. GST)
Being discontinued
Siemens 160A Fuse Holder for NH00 Fuse, 1P, 690V
  • RS Stock No. 269-8368
  • Mfr. Part No. 3NH3032
Each (In a Pack of 3)
TWD662.70(exc. GST)
Being discontinued
RS PRO 4A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-542
Each (In a Pack of 10)
TWD11.70(exc. GST)
In Stock
Siemens 5SY41 5SY MCB Mini Circuit Breaker, 1P, 6A, Type A, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 266-9592
  • Mfr. Part No. 5SY4115-5
Each
TWD1,984.00(exc. GST)
In Stock
Littelfuse 10A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-3120
  • Mfr. Part No. 0217010.MXP
Each (In a Pack of 10)
TWD9.70(exc. GST)
1
4
2366
Results per page

Related links