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

327 / 999+
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7759
  • Mfr. Part No. C16F3TM100
Each
MYR4,624.90
In Stock
ABB System Pro M Compact S200 M UC MCB, 4P, 60A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 201-107
  • Mfr. Part No. 2CDS274061R0587
Each
MYR6,008.39
Temporarily out of stock
630A Fuse Holder for 250 x 3254mm Fuse, 3P, 690V
  • RS Stock No. 262-040
  • Mfr. Part No. EBH3O3TS8
Each
MYR1,501.96
In Stock
Littelfuse SMD Non Resettable Fuse 15A, 65V
  • RS Stock No. 738-2933
  • Mfr. Part No. 0451015.MRL
Each (In a Pack of 10)
MYR7.227
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 4 channels
  • RS Stock No. 156-739
  • Mfr. Part No. 3VA2340-5JP42-0AA0
Each
MYR19,616.99
Temporarily out of stock
SENTRON Wire Connector for use with 3VA53/54, 3VA63/64 Series
  • RS Stock No. 263-941
  • Mfr. Part No. 3VA9373-0JC24
1 Kit
MYR1,482.88
Temporarily out of stock
ABB S802 Circuit Breaker, 2P, 10A Curve C, 690V AC, 250V DC, 4.5 kA Breaking Capacity
  • RS Stock No. 287-6377
  • Mfr. Part No. 2CCS892001R0104
Each
MYR752.77
Temporarily out of stock
Schneider Electric EZ9R RCCB, 63A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-804
  • Mfr. Part No. EZ9R46263
Each
MYR325.83
Temporarily out of stock
Better World
Siemens SENTRON 5SL4 MCB, 2P, 3A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 209-6465
  • Mfr. Part No. 5SL4203-8
Each
MYR535.46
Temporarily out of stock
Eaton IZMX40H3-V16F-1 Electronic Circuit Breaker 1.6kA , Fixed
  • RS Stock No. 132-681
  • Mfr. Part No. 183721 IZMX40H3-V16F-1
Each
MYR60,198.01
Temporarily out of stock
25A Cartridge Fuse, 1.5 x 0.58in
  • RS Stock No. 263-414
  • Mfr. Part No. TPA-25
1 Pack of 10
MYR1,741.00
Temporarily out of stock
RS PRO SMD Non-Resettable Surface Mount Fuse 8A, 63V
  • RS Stock No. 252-2182
Each (On a Tape of 4000)
MYR0.745
Temporarily out of stock
Siemens 5SM23 RCCB, 63A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 328-325
  • Mfr. Part No. 5SM2325-6
Each
MYR1,352.52
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 4P, 16A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 202-979
  • Mfr. Part No. 2CDS274001R0467
Each
MYR2,669.06
In Stock
Siemens 20A NH Fuse, NH000, 500V ac
  • RS Stock No. 395-793
  • Mfr. Part No. 3NA3807
Each (In a Pack of 3)
MYR36.263
Temporarily out of stock
Siemens SENTRON Two Phase Busbar, 1mm Pitch
  • RS Stock No. 626-986
  • Mfr. Part No. 5ST3664-2HG
1 Pack of 10
MYR1,003.15
Temporarily out of stock
Hager NEN MCB, 1P, 50A, 230V AC, 10 Breaking Capacity
  • RS Stock No. 602-150
  • Mfr. Part No. NEN150
Each
MYR423.79
Temporarily out of stock
ABB System Pro M Compact S200 MCB, 3P, 16A, Type Z, 400V AC, 110V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-933
  • Mfr. Part No. 2CDS253001R0468
Each
MYR1,465.08
In Stock
Schneider Electric Surge Arrester, 40kA, 460V ac, Clip-On Mount
  • RS Stock No. 288-7109
  • Mfr. Part No. A9L40321
Each
MYR4,404.69
In Stock
ABB SU200 M MCB, 1P, 6A Curve C, 277V AC, 48V DC, 15 kA Breaking Capacity
  • RS Stock No. 203-848
  • Mfr. Part No. 2CDS271337R0064
Each
MYR562.99
1
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