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

178 / 999+
In Stock
Schurter PC Board Non Resettable Fuse, Radial 1A, 250V ac
  • RS Stock No. 284-5338
  • Mfr. Part No. 0034.6615
Each (In a Pack of 10)
MYR2.155
In Stock
Phoenix Contact Electronic Device Circuit Breaker Electronic Circuit breaker 4A 24V PTCB, 1 channels , DIN Rail Mount
  • RS Stock No. 207-2795
  • Mfr. Part No. 2908261
Each
MYR266.54
In Stock
Schneider Electric Vigi C120 MCB, 4P, 125A, Type AC
  • RS Stock No. 248-3684
  • Mfr. Part No. A9N18549
Each
MYR4,499.43
In Stock
Schurter 16A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 269-3870
  • Mfr. Part No. 8020.5023
Each
MYR6.55
In Stock
Schurter 5A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 269-3868
  • Mfr. Part No. 8020.5018
Each
MYR3.82
In Stock
Better World
ABB System Pro M Compact S200M MCB, 1P, 1A Curve C, 253V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 535-4093
  • Mfr. Part No. 2CDS271001R0014 S201M-C1
Each
MYR136.85
In Stock
Schurter 10A PCB Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 344-5563
  • Mfr. Part No. 0031.3558
Each (In a Pack of 5)
MYR22.182
In Stock
Better World
Siemens SENTRON 5SY8 MCB, 1P, 16A Curve C, 400V AC, 72V DC, 25 kA Breaking Capacity
  • RS Stock No. 209-6056
  • Mfr. Part No. 5SY8116-7
Each
MYR264.27
Temporarily out of stock
SENTRON Wire Connector for use with 3VA57, 3VA67 Series
  • RS Stock No. 263-556
  • Mfr. Part No. 3VA9773-0JJ34
1 Kit
MYR4,204.21
In Stock
SIBA SMD Non Resettable Fuse 2.5A, 250V
  • RS Stock No. 736-2683P
  • Mfr. Part No. 160016.2,5
Each (Supplied on a Reel)
MYR11.775
Temporarily out of stock
Hager ARC RCCB, 40A, 1P+N Pole
  • RS Stock No. 602-042
  • Mfr. Part No. ARC240F
Each
MYR1,453.40
Temporarily out of stock
Lovato 1 Phase Surge Protector, 50kA
  • RS Stock No. 216-8296
  • Mfr. Part No. SG21NA300
Each
MYR1,094.98
Temporarily out of stock
Lovato 32A Rail Mount Fuse Holder, 2P, 1kV
  • RS Stock No. 216-8278
  • Mfr. Part No. FB01D2P
Each
MYR116.68
Temporarily out of stock
Lovato 3 Phase Surge Protector
  • RS Stock No. 216-8303
  • Mfr. Part No. SG23NA300R
Each
MYR2,596.38
Temporarily out of stock
Lovato 3 Phase Surge Protector, 50kA
  • RS Stock No. 216-8305
  • Mfr. Part No. SG23PA300R
Each
MYR1,907.77
Temporarily out of stock
Lovato 1 Phase Surge Protector, 3kA
  • RS Stock No. 216-8294
  • Mfr. Part No. SA31NA275MS
Each
MYR498.11
Temporarily out of stock
Lovato 3 Phase Surge Protector, 40kA
  • RS Stock No. 216-8309
  • Mfr. Part No. SG2DGK10M3
Each
MYR1,572.02
Temporarily out of stock
Lovato 3 Phase Surge Protector, 60kA
  • RS Stock No. 216-8285
  • Mfr. Part No. SA03NA320R
Each
MYR4,384.44
Temporarily out of stock
Lovato 1 Phase Surge Protector, 3kA
  • RS Stock No. 216-8292
  • Mfr. Part No. SA31NA275ML
Each
MYR565.90
Temporarily out of stock
Lovato 3 Phase Surge Protector, 100kA
  • RS Stock No. 216-8289
  • Mfr. Part No. SA1B3NA320R
Each
MYR9,117.01
1
178
2329
Results per page

Related links