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

46578 Products showing for Fuses & Circuit Breakers

210 / 999+
In Stock
Better World
Schneider Electric Multi 9 C60N MCB, 4P, 16A Curve C
  • RS Stock No. 248-3870
  • Mfr. Part No. M9F11416
Each
MYR1,679.19
In Stock
ABB Tmax XT Rotary Handle for use with Circuit Breaker
  • RS Stock No. 236-6855
  • Mfr. Part No. 1SDA069056R1 RHE_EM XT2-4 F/P EMERG
Each
MYR831.92
Temporarily out of stock
Hager RCBO, 40A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type A
  • RS Stock No. 602-212
  • Mfr. Part No. ADX490C
Each
MYR3,267.67
Temporarily out of stock
ABB MCCB 4P 63A, Breaking Capacity 15 kA
  • RS Stock No. 192-0828
  • Mfr. Part No. 1SDA067961R1
Each
MYR11,281.51
In Stock
Schneider Electric Compact NSX Toggle Extention for use with Compact NSX 400/630
  • RS Stock No. 347-004
  • Mfr. Part No. LV432553T
Each
MYR215.64
Temporarily out of stock
Hager HMC MCB, 2P, 80A, 400V AC, 15 Breaking Capacity
  • RS Stock No. 602-110
  • Mfr. Part No. HMC280
Each
MYR1,765.62
Last RS stock
RS PRO 63A Bolted Tag Fuse, 350 V dc, 690V ac, 63.5mm
  • RS Stock No. 221-3665
Each
MYR67.63
In Stock
Eaton 10A PCB Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 169-9384
  • Mfr. Part No. HTC-45M
1 Bag of 1000
MYR6,888.73
In Stock
Eaton 750mA T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7146
  • Mfr. Part No. MDL-3-4-R
Each
MYR14.74
In Stock
20A Fuse Holder for 55 x 79mm Fuse, 1P, 690V
  • RS Stock No. 261-964
  • Mfr. Part No. RS20H
1 Pack of 10
MYR1,017.83
In Stock
Littelfuse 2A Grey Blade Car Fuse, 32V dc
  • RS Stock No. 787-4126P
  • Mfr. Part No. 0287002.PXCN
Each (Supplied in a Bag)
MYR1.615
Temporarily out of stock
Siemens, SENTRON MCCB 1P 90A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 147-727
  • Mfr. Part No. 3VA5190-5ED11-0AA0
Each
MYR1,113.66
Temporarily out of stock
ABB MCCB 4P 200A, Breaking Capacity 27 kA
  • RS Stock No. 192-0831
  • Mfr. Part No. 1SDA068069R1
Each
MYR9,882.85
Temporarily out of stock
Better World
Schneider Electric Multi 9 C60BP MCB, 1P, 20A Curve C, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 211-2411
  • Mfr. Part No. M9F42120
Each
MYR300.29
In Stock
RS PRO 800mA T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-356
Each (In a Pack of 10)
MYR1.598
In Stock
Hager 125A Rail Mount Fuse Holder for 22 x 58mm Fuse, 1P, 690V ac
  • RS Stock No. 144-4548
  • Mfr. Part No. LS712
Each
MYR478.90
Temporarily out of stock
Schneider Electric MASTERPACT NW MCB, 3P, 2.5kA
  • RS Stock No. 247-1895
  • Mfr. Part No. 48300
Each
MYR91,452.93
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-466
  • Mfr. Part No. 3VA5110-4GD41-0AA0
Each
MYR3,302.37
Temporarily out of stock
Hager NFN MCB, 2P, 4A Curve C, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4710
  • Mfr. Part No. NFN204
Each
MYR666.12
In Stock
Mersen 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 189-5337
  • Mfr. Part No. S1062708 / CMC101I
Each
MYR57.79
1
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