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

46578 Products showing for Fuses & Circuit Breakers

303 / 999+
Temporarily out of stock
Better World
Siemens 3VA91 RCD, 160A, 3 Pole, Type B
  • RS Stock No. 218-1787
  • Mfr. Part No. 3VA9113-0RL21
Each
MYR8,084.61
In Stock
Schneider Electric RCBO, 20A Current Rating, 1P Poles, Type C, Acti9 Range
  • RS Stock No. 245-138
  • Mfr. Part No. A9D05820
Each
MYR988.53
In Stock
Better World
Schneider Electric Compact Ins, Compact Inv, Compact Nsx, Easypact Cvs, Powerpact Multistandard Phase Barrier for use
  • RS Stock No. 221-1258
  • Mfr. Part No. LV432570
Each
MYR223.02
In Stock
Schneider Electric TransferPacT Electronic Circuit Breaker 63A TAA100, Fixed
  • RS Stock No. 272-7578
  • Mfr. Part No. TA10D2L0633TPE
Each
MYR10,531.92
Temporarily out of stock
Siemens SENTRON 5SL3 Circuit Breaker, 1+N, 10A Curve C, 230V AC, 60V DC, 4.5 KA Breaking Capacity
  • RS Stock No. 220-097
  • Mfr. Part No. 5SL3010-7KL
Each
MYR240.19
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-3591
  • Mfr. Part No. 1SDA071568R1
Each
MYR57,800.26
Temporarily out of stock
Wurth Elektronik 10A PCB Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 893-0586
  • Mfr. Part No. 696106003002
Each (In a Pack of 10)
MYR2.962
In Stock
ABB F200 RCCB, 100A, 2 Pole, 30mA, Type A, 110V ac
  • RS Stock No. 177-5068
  • Mfr. Part No. 2CSF202199R1100 F202 A-100/0,03 110V
Each
MYR1,742.31
Temporarily out of stock
Siemens ALPHA Distribution Board, 54 Way
  • RS Stock No. 211-6083
  • Mfr. Part No. 8GB1373-3
Each
MYR2,176.37
In Stock
Schurter 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 866-3438
  • Mfr. Part No. 0031.1663
Each (In a Pack of 50)
MYR6.633
Temporarily out of stock
Hager CFB RCD Switch, 40A, 4 Pole, 300mA, Type B, 230 → 400V
  • RS Stock No. 599-754
  • Mfr. Part No. CFB740F
Each
MYR5,490.91
Temporarily out of stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 4P 630A, Fixed Mount
  • RS Stock No. 231-9333
  • Mfr. Part No. 1SDA100388R1 XT5N 630 TMA 630-6300 4pFF
Each
MYR13,601.48
Temporarily out of stock
Siemens 630A Tag Fuse, NH4, 500 / 440V ac/dc
  • RS Stock No. 143-898
  • Mfr. Part No. 3NA3472
Each
MYR2,058.76
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 5kA Ekip Touch LI, 3 channels
  • RS Stock No. 259-4423
  • Mfr. Part No. 1SDA072614R1
Each
MYR156,580.65
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 8A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 131-977
  • Mfr. Part No. 2CDS272001R0084 S202M-C8
Each
MYR336.39
In Stock
ABB Tmax T Handle, Lockable for use with Circuit Breaker
  • RS Stock No. 232-0142
  • Mfr. Part No. 1SDA060409R1 RHE F T6
Each
MYR816.00
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-4577
  • Mfr. Part No. 1SDA072827R1
Each
MYR55,291.22
In Stock
Eaton 2.5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1486
Each (In a Pack of 10)
MYR1.287
Temporarily out of stock
Schneider Electric Resi9 Insulation accessory for use with Circuit Breaker
  • RS Stock No. 212-261
  • Mfr. Part No. R9XE310
Each
MYR71.88
In Stock
Eaton xEffect MCB, 1P, 12A Curve D
  • RS Stock No. 230-1008
  • Mfr. Part No. 177491 FAZ6-D12/1
Each
MYR127.46
1
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