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

2242 / 999+
Temporarily out of stock
Better World
Siemens RCBO, 13A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8822
  • Mfr. Part No. 5SV1316-7LK13
Each
MYR949.65
In Stock
Eaton 1.75A Resettable Fuse, 6V
  • RS Stock No. 225-8266
  • Mfr. Part No. PTSLR12106V175
Each (In a Pack of 10)
MYR2.099
In Stock
RS PRO 1A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 199-231
1 Pack of 10
MYR1,284.31
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7764
  • Mfr. Part No. C16F44V160
Each
MYR16,102.46
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3759
  • Mfr. Part No. 3VA2040-6KQ42-0AA0
Each
MYR12,197.39
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 125A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9704
  • Mfr. Part No. 3VA11123GD460AA0
Each
MYR4,246.65
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-4405
  • Mfr. Part No. 1SDA072587R1
Each
MYR124,707.13
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7860
  • Mfr. Part No. C25B34V160
Each
MYR15,210.81
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 5kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3952
  • Mfr. Part No. 1SDA071996R1
Each
MYR249,692.87
Temporarily out of stock
Schneider Electric Terminal for use with Compact INS, Compact INSE Circuit Breaker
  • RS Stock No. 247-1718
  • Mfr. Part No. 28948
Each
MYR127.97
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3761
  • Mfr. Part No. 3VA2025-5KP46-0AA0
Each
MYR7,857.47
Temporarily out of stock
Eaton Eaton Moeller Enclosure for use with PKZ01 +VHI
  • RS Stock No. 272-2357
  • Mfr. Part No. 281945 CI-PKZ01-NA-SVB-V
Each
MYR299.03
Temporarily out of stock
ABB RCBO, 13A Current Rating, 3P Poles, Type B
  • RS Stock No. 237-5079
  • Mfr. Part No. 2CSR253101R1135
Each
MYR1,746.14
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-4118
  • Mfr. Part No. 3VA2116-8HL32-0AA0
Each
MYR7,616.14
Temporarily out of stock
Better World
Siemens, 0AA0 MCCB 3P 40A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-6064
  • Mfr. Part No. 3VA2140-5HN32-0AA0
Each
MYR4,482.46
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 400A, Fixed Mount
  • RS Stock No. 260-8172
  • Mfr. Part No. C40W42D400
Each
MYR27,909.54
Temporarily out of stock
Europa EUR1 RCCB, 80A, 2 Pole, 300mA, Type A, 230V ac
  • RS Stock No. 210-4762
  • Mfr. Part No. EUR180.300/2A
Each
MYR250.56
Temporarily out of stock
Siemens ALPHA for use with Mounting Accessories
  • RS Stock No. 230-2193
  • Mfr. Part No. 8GK9100-0KK04
Each
MYR146.26
Temporarily out of stock
Eaton xEffect MCB, 4P, 1A Curve D
  • RS Stock No. 230-1004
  • Mfr. Part No. 177600 FAZ6-D1/4
Each
MYR1,041.94
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Dip LI, 3 channels
  • RS Stock No. 259-3304
  • Mfr. Part No. 1SDA071211R1
Each
MYR109,374.20
1
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