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
Fuses - PCB
Fuses - PCB

46580 Products showing for Fuses & Circuit Breakers

84 / 999+
In Stock
Littelfuse 2A Grey Blade Car Fuse, 32V dc
  • RS Stock No. 787-4117
  • Mfr. Part No. 0297002.WXNV
Each (In a Pack of 10)
MYR1.376
In Stock
Schneider Electric TransferPacT Electronic Circuit Breaker 63A TA100, Fixed
  • RS Stock No. 272-7583
  • Mfr. Part No. TA10D4S0634TPE
Each
MYR11,453.87
In Stock
ABB Tmax T Motor Operator for use with MCCB
  • RS Stock No. 232-0114
  • Mfr. Part No. 1SDA054897R1 MOE 220-250VACDC T4-5
Each
MYR4,701.17
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 6A Curve C, 250V DC
  • RS Stock No. 772-1502
  • Mfr. Part No. A9N61506
Each
MYR302.37
In Stock
Eaton 15A T Melamine Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 261-379
  • Mfr. Part No. LP-CC-15
1 Pack of 10
MYR2,753.17
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 3A Curve C, 250V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3159
  • Mfr. Part No. A9N61503
Each
MYR313.00
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 10A Curve B, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7567
  • Mfr. Part No. 2CDS252001R0105 S202-B10
Each
MYR282.19
Temporarily out of stock
TE Connectivity Thermal Magnetic Circuit Breakers - Potter & Brumfield W54 Single Pole 250V ac Voltage Rating Panel
  • RS Stock No. 240-8954
  • Mfr. Part No. 3-1393250-2
Each (In a Bag of 100)
MYR36.433
In Stock
ABB, Formula DSA MCCB 1P 125A, Fixed Mount
  • RS Stock No. 237-6137
  • Mfr. Part No. 1SDA066687R1
Each
MYR775.72
In Stock
Better World
Schneider Electric Acti 9 Rotary Handle for use with iC60 MCB, iDPN Vigi, ilD MCB, iSW-NA
  • RS Stock No. 791-3032
  • Mfr. Part No. A9A27006
Each
MYR535.56
In Stock
Siemens SIRIUS 3 Phase Busbar, 690V, 63mm Pitch
  • RS Stock No. 246-5178
  • Mfr. Part No. 3RV1915-3AB
Each
MYR88.67
In Stock
Eaton PKZ0 Circuit Breaker for use with PKZM0, PKZM4
  • RS Stock No. 272-7215
  • Mfr. Part No. 106137 PKZ0-XRH-MCC
Each
MYR428.97
In Stock
Dold Remote Switch Control Station Switch
  • RS Stock No. 240-9241
  • Mfr. Part No. IK8800.11 AC50Hz 230V
Each
MYR272.02
Last RS stock
Littelfuse 250mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 725-8026
  • Mfr. Part No. 0213.250MXP
Each (In a Bag of 10)
MYR4.636
In Stock
Eaton 3.15A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9399
  • Mfr. Part No. S500-3.15-R
1 Bag of 1000
MYR914.40
Temporarily out of stock
Schurter SMD Non Resettable Fuse 1.25A, 277 V ac, 250V dc
  • RS Stock No. 830-4189
  • Mfr. Part No. 3403.0275.23
Each (In a Pack of 10)
MYR5.747
In Stock
Littelfuse 0.5A Resettable Fuse, 24V dc
  • RS Stock No. 517-7111P
  • Mfr. Part No. MINISMDC050F-2
Each (Supplied on a Reel)
MYR1.539
In Stock
Better World
Schneider Electric Multi 9 C60N MCB, 2P, 10A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 214-2065
  • Mfr. Part No. M9F11210
Each
MYR343.10
In Stock
Better World
Schneider Electric RCBO, 40A Current Rating, 1P+N Poles, Type AB, Easy9 Range
  • RS Stock No. 850-8662
  • Mfr. Part No. EZ9D16840
Each
MYR170.94
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 4P, 32A Curve C, 440V AC, 220 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3442
  • Mfr. Part No. A9F54432
Each
MYR1,185.01
1
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