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

2234 / 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 63A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9401
  • Mfr. Part No. 3VA1163-6ED46-0AA0
Each
MYR2,781.92
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. 271-9705
  • Mfr. Part No. 3VA11123GE420AA0
Each
MYR4,121.99
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 63A, Fixed Mount
  • RS Stock No. 260-7510
  • Mfr. Part No. C10W4TM063
Each
MYR8,914.76
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-3001
  • Mfr. Part No. 1SDA070838R1
Each
MYR43,620.76
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 16A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9470
  • Mfr. Part No. 3VA1196-6ED46-0AA0
Each
MYR2,781.92
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Dip LI, 3 channels
  • RS Stock No. 259-3088
  • Mfr. Part No. 1SDA070941R1
Each
MYR31,873.73
Temporarily out of stock
Siemens, SENTRON MCCB 3P 800A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 270-4839
  • Mfr. Part No. 3VA2580-5HN32-0KF0
Each
MYR21,865.28
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 70 kA
  • RS Stock No. 209-6966
  • Mfr. Part No. 3VA1110-6EE32-0AA0
Each
MYR1,859.11
In Stock
Bourns 60A Tag Fuse, 66mm, 170V dc, 24.1mm
  • RS Stock No. 254-4225
  • Mfr. Part No. PF-NT2-60
Each
MYR127.67
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 85 kA
  • RS Stock No. 209-7050
  • Mfr. Part No. 3VA2025-6KP32-0AA0
Each
MYR6,766.16
Temporarily out of stock
ABB RCBO, 13A Current Rating, 4P Poles, Type C
  • RS Stock No. 237-5096
  • Mfr. Part No. 2CSR254001R1134
Each
MYR1,943.27
In Stock
Bourns Surface Mount Fuse 1A, 65V dc
  • RS Stock No. 245-9242
  • Mfr. Part No. SF-1206SA100M-2
Each (On a Tape of 10)
MYR4.959
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 3 channels
  • RS Stock No. 259-9950
  • Mfr. Part No. 1SDA070829R1
Each
MYR44,960.07
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 1P 32A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9876
  • Mfr. Part No. 3VA1132-3ED12-0AA0
Each
MYR772.81
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-3845
  • Mfr. Part No. 1SDA071857R1
Each
MYR192,264.27
Temporarily out of stock
ABB 50A Tag Fuse, 125 x 30 x 60mm, 500V
  • RS Stock No. 250-4409
  • Mfr. Part No. 1SCA022697R4040
1 Box of 3
MYR290.07
Temporarily out of stock
Siemens 24V ac Circuit Trip
  • RS Stock No. 223-7618
  • Mfr. Part No. 5TT4402-2
Each
MYR436.81
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 4 channels
  • RS Stock No. 259-3477
  • Mfr. Part No. 1SDA071432R1
Each
MYR35,967.94
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-3659
  • Mfr. Part No. 1SDA071633R1
Each
MYR47,392.46
Temporarily out of stock
Better World
Siemens SENTRON Box Terminal for use with 3VA1 100/160
  • RS Stock No. 210-3516
  • Mfr. Part No. 3VA9154-0JA11
Each
MYR289.90
1
2234
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