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

120 / 999+
Being discontinued
Mersen 630mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 270-3090
  • Mfr. Part No. P090541
Each (In a Box of 10)
MYR2.858
In Stock
Schurter 20mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 870-1622
  • Mfr. Part No. 7010.3110
Each (In a Pack of 10)
MYR8.48
Temporarily out of stock
Littelfuse 2A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 769-0032
  • Mfr. Part No. 0313002.HXP
Each (In a Pack of 10)
MYR4.062
In Stock
Legrand 6A F Ceramic Cartridge Fuse, 8.5 x 32mm
  • RS Stock No. 293-8187
  • Mfr. Part No. 0 123 06
Each (In a Pack of 10)
MYR10.299
In Stock
Siemens 35A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 203-2026
  • Mfr. Part No. 3NA7814
Each (In a Pack of 3)
MYR43.24
In Stock
Eaton 250mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9410
  • Mfr. Part No. S500-250-R
1 Bag of 1000
MYR3,515.00
In Stock
Mersen 4A T Fibreglass Cartridge Fuse, 10 x 38mm
  • RS Stock No. 914-4320
  • Mfr. Part No. ATDR4
Each
MYR169.69
In Stock
Phoenix Contact Thermal Circuit Breaker - TCP 10A Single Pole 65 V dc, 250V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 801-6915
  • Mfr. Part No. 0712314
Each
MYR85.07
In Stock
RS PRO MCB, 2P, 32A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0184
Each
MYR111.42
In Stock
Hager CDC RCD Switch, 25A, 2 Pole, 30mA, Type AC, 230V
  • RS Stock No. 251-2026
  • Mfr. Part No. CDC728F
Each
MYR549.50
In Stock
Spelsberg Consumer Unit
  • RS Stock No. 548-8219
  • Mfr. Part No. 735-536/21
Each
MYR625.88
In Stock
Eaton 10A British Standard Fuse, A2, 550V ac, 73mm
  • RS Stock No. 413-333
  • Mfr. Part No. AAO10
Each (In a Pack of 5)
MYR34.772
In Stock
Better World
Schneider Electric Linergy Busbar, 690V, 45mm Pitch
  • RS Stock No. 608-8220
  • Mfr. Part No. GV2G345
Each
MYR152.21
In Stock
Schurter 12.5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 866-3101
  • Mfr. Part No. 0001.1015
Each (In a Pack of 10)
MYR1.919
In Stock
SIBA 200mA T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3276
  • Mfr. Part No. 70-007-65/0.2A
Each (In a Pack of 10)
MYR2.82
In Stock
Eaton 4A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8370
  • Mfr. Part No. C10G4
Each (In a Pack of 10)
MYR7.29
Temporarily out of stock
Eaton xEffect MCB, 1P, 3A Curve D, 240 → 415V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-6927
  • Mfr. Part No. 102101 FAZ-D3/1-NA
Each
MYR241.62
Temporarily out of stock
Mersen Surge Protector
  • RS Stock No. 251-3636
  • Mfr. Part No. 83020183 / STPT2-40K275V-2P-TE GROUND MONITORING
Each
MYR662.56
Limited stock
Limitor Thermal Fuse +100°C 2.5 A, 250V ac
  • RS Stock No. 204-7449
  • Mfr. Part No. Q82 A 100 05 100
Each
MYR31.21
Limited stock
Schneider Electric Acti 9 1 Phase Busbar, 230V ac, 9mm Pitch
  • RS Stock No. 191-9522
  • Mfr. Part No. A9XPN612
Each
MYR192.38
1
120
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