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

46372 Products showing for Fuses & Circuit Breakers

1 / 999+
In Stock
Schneider Electric DIN Rail Undervoltage Release Circuit Trip for use with ARA, iC40, ic60 MCB, iC65, iDPN (China
  • RS Stock No. 791-2799
  • Mfr. Part No. A9A26960
Each
MYR804.22
In Stock
Eaton 5 A F Melamine Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 848-3911
  • Mfr. Part No. KTK-R-5
Each
MYR178.46
Limited stock
Limitor Thermal Fuse 152 °C, 15 A, 250 V
  • RS Stock No. 797-6058
  • Mfr. Part No. SF 150 R
Each (In a Pack of 10)
MYR5.462
In Stock
ABB Residual Current Circuit Breaker with Overload Protection, 16 A Current Rating, 2-Pole, 30 mA Trip Sensitivity, Type
  • RS Stock No. 201-6932
  • Mfr. Part No. 2CSR275180R1164 DS201 M C16 A30
Each
MYR860.48
In Stock
ABB Residual Current Circuit Breaker with Overload Protection, 32 A Current Rating, 4-Pole, 30 mA Trip Sensitivity, Type
  • RS Stock No. 225-6146
  • Mfr. Part No. 2CSR256040R1324 DS203NC C32 AC30
Each
MYR986.33
Limited stock
ABB SN201 SN201 Miniature Circuit Breaker, 1-Pole, 16 A, Type C, 230 V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 186-3479
  • Mfr. Part No. 2CSS245202R0164
Each
MYR70.66
In Stock
Siemens 16A Bottle Fuse Holder, 3P, 400V ac
  • RS Stock No. 202-7055
  • Mfr. Part No. 5SG5302
Each (In a Pack of 5)
MYR107.818
In Stock
RS PRO 5 A FF Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 420-117
Each (In a Pack of 10)
MYR6.776
In Stock
Schurter Non-Resettable Fuse 2 A, 125 V
  • RS Stock No. 173-7994
  • Mfr. Part No. 3404.0116.22
Each (On a Reel of 750)
MYR2.505
Being discontinued
RS PRO 15 A F Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 177-8139
Each (In a Pack of 50)
MYR1.553
In Stock
ABB S201L Miniature Circuit Breaker, 1-Pole, 16 A, Type C, 400 V AC, 6 kA Breaking Capacity
  • RS Stock No. 203-770
  • Mfr. Part No. 2CDS241701R0164
Each
MYR93.06
Limited stock
Schneider Electric Multi9 C60SP Miniature Circuit Breaker, 2-Pole, 32 A, Type D, 440 V ac AC, 125 V DC, 14 kA Breaking
  • RS Stock No. 211-2398
  • Mfr. Part No. M9F23232
Each
MYR191.92
In Stock
RS PRO 1 A T Glass Cartridge Fuse, 5.2 x 20 mm
  • RS Stock No. 668-5994
Each (In a Pack of 10)
MYR1.746
In Stock
Eaton 160A Rail Mount Fuse Holder for NH00 Fuse, 3P, 690V ac
  • RS Stock No. 182-1438
  • Mfr. Part No. TD00-DI
Each
MYR186.98
In Stock
Mersen 16 A FF Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 136-0605
  • Mfr. Part No. D1014579 / FR10GR69V16
Each
MYR86.81
In Stock
ABB System Pro M Compact System Pro M Compact Miniature Circuit Breaker, 1-Pole, 16 A, Type C, 253 V ac AC, 72 V DC, 10
  • RS Stock No. 535-4150
  • Mfr. Part No. 2CDS271001R0164 S201M-C16
Each
MYR124.31
In Stock
Eaton xPole xPole Miniature Circuit Breaker, 1-Pole, 16 A, Type C, 230 V ac AC, 4.5 kA Breaking Capacity
  • RS Stock No. 230-1076
  • Mfr. Part No. 264746 PLG4-C16/1N
Each
MYR66.22
In Stock
Hager 1 A GG Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 250-8589
  • Mfr. Part No. LF301G
Each (In a Pack of 10)
MYR17.964
In Stock
Eaton PXF-A RCCB, 40A, 3+N Pole, 30mA, Type A, 400V ac
  • RS Stock No. 490-466
  • Mfr. Part No. 236776 PXF-40/4/003-A
Each
MYR306.80
In Stock
RS PRO 6 A T Glass Cartridge Fuse, 5.2 x 20 mm
  • RS Stock No. 177-8089
Each (In a Pack of 50)
MYR2.095
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