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

116 / 999+
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 1P, 5A Curve D, 415V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 211-2385
  • Mfr. Part No. M9F23105
Each
MYR188.90
In Stock
Better World
ABB Compact Home SH200 MCB, 3P, 20A Curve B, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 539-8302
  • Mfr. Part No. 2CDS213001R0205 SH203-B20
Each
MYR203.25
In Stock
Weidmuller Electronic Circuit breaker 25mA 24V AMG ELM, 1 channels , DIN Rail Mount
  • RS Stock No. 179-2997
  • Mfr. Part No. 2080490000
Each
MYR180.85
In Stock
Eaton 30A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-4399
  • Mfr. Part No. LP-CC-30
Each
MYR308.49
In Stock
ABB High Performance S800S MCB, 2P, 100A Curve B, 400V AC, 250V DC, 50 kA Breaking Capacity
  • RS Stock No. 435-598
  • Mfr. Part No. 2CCG001218R0001
Each
MYR1,282.03
Temporarily out of stock
Better World
Siemens SENTRON 5SY MCB, 2P, 6A, Type A
  • RS Stock No. 232-2291
  • Mfr. Part No. 5SY4206-5
Each
MYR570.00
In Stock
Schurter 16A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 337-1995
  • Mfr. Part No. 3101.0030
Each (In a Pack of 5)
MYR14.978
In Stock
ABB F200 RCCB, 63A, 2 Pole, 30mA, Type AC
  • RS Stock No. 537-7377
  • Mfr. Part No. 2CSF202001R1630 F202 AC-63/0,03
Each
MYR939.12
Temporarily out of stock
ABB S800S MCB, 3P, 25A Curve D, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-641
  • Mfr. Part No. 2CCS863001R0251
Each
MYR1,744.19
Temporarily out of stock
ABB, XT2N MCCB 3P 63A, Fixed Mount
  • RS Stock No. 237-6213
  • Mfr. Part No. 1SDA067016R1 XT2N 160 TMA 63A FF
Each
MYR1,606.59
In Stock
Eaton 6.3A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1391
Each (In a Pack of 10)
MYR1.254
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 25 kA, Cable Mount
  • RS Stock No. 249-217
  • Mfr. Part No. 3VA6610-5JP36-0AA0
Each
MYR40,629.86
Currently unavailable
L-Com Surge Protector, DIN Rail Mount
  • RS Stock No. 297-413
  • Mfr. Part No. ELPD-CAT6
Each
MYR576.83
In Stock
Eaton 6A Slow-Blow Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-183
  • Mfr. Part No. C10M6 CYLINDRICAL FUSE 10 x 38 6A AM 500V AC
1 Pack of 10
MYR60.83
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 20A Curve C, 250V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3177
  • Mfr. Part No. A9N61512
Each
MYR175.30
In Stock
Eaton RCD, 32A, 2 Pole, 30mA, Type C
  • RS Stock No. 922-8752
  • Mfr. Part No. 236305 PKNM-32/1N/C/003-MW
Each
MYR850.64
In Stock
ABB RCBO, 16A Current Rating, 4P Poles, Type C
  • RS Stock No. 237-5098
  • Mfr. Part No. 2CSR254001R1164
Each
MYR1,535.03
In Stock
Eaton xEffect MCB, 3P, 6A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 624-0428
  • Mfr. Part No. 278867 FAZ-C6/3
Each
MYR660.03
Temporarily out of stock
ABB S800U MCB, 2P, 80A, Type Z, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-112
  • Mfr. Part No. 2CCS862017R0805
Each
MYR1,714.40
In Stock
Eaton 5A F Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 412-576
  • Mfr. Part No. TDC180-5A
Each (In a Pack of 10)
MYR4.314
1
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