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

294 / 999+
In Stock
Wickmann Inline Fuse Holder
  • RS Stock No. 174-0667
  • Mfr. Part No. 01550120ZXU
Each (In a Pack of 5)
MYR4.502
In Stock
Eaton 1.5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 849-5649
  • Mfr. Part No. BK-GMD-1-5-R
Each
MYR6.00
Temporarily out of stock
Better World
Schneider Electric GFP RCCB, 63A, 4 Pole, 26mA, 277V ac
  • RS Stock No. 211-2466
  • Mfr. Part No. M9R81463
Each
MYR3,492.10
Temporarily out of stock
Better World
Schneider Electric Acti 9 3 Phase Distribution Board, 18 Way, 250 A
  • RS Stock No. 125-1414
  • Mfr. Part No. SEA9BN18PEV
Each
MYR3,930.63
In Stock
ABB System Pro M Compact S200MUC MCB, 2P, 6A, Type Z, 440V AC, 440V DC, 25 kA Breaking Capacity
  • RS Stock No. 231-9736
  • Mfr. Part No. 2CDS272061R0378 S202 MUC Z 6A 10 KA
1 Box of 1
MYR1,468.91
Temporarily out of stock
Schneider Electric Acti9 3 Phase Distribution Board, 16 Way, 250 A
  • RS Stock No. 244-940
  • Mfr. Part No. SE48B250
Each
MYR3,871.04
In Stock
RS PRO 3 Phase Industrial Surge Protector, 140kA, 2.5kV, DIN Rail Mount
  • RS Stock No. 101-770
Each
MYR4,227.96
Temporarily out of stock
Better World
Siemens 5sV3 RCCB, 40A, 4 Pole, 30mA, 400V ac
  • RS Stock No. 211-9642
  • Mfr. Part No. 5SV3344-4KK14
Each
MYR4,565.19
In Stock
Better World
ABB Compact Home SH200 MCB, 1P, 40A Curve C, 440V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 539-8267
  • Mfr. Part No. 2CDS211001R0404 SH201-C40
Each
MYR61.05
In Stock
Eaton 63A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 182-1601
  • Mfr. Part No. 170M1565D
Each
MYR354.37
In Stock
Better World
Schneider Electric Multi 9 MCB, 2P, 4A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 219-9157
  • Mfr. Part No. M9F42204
Each
MYR1,396.67
Limited stock
Limitor Thermal Fuse +130°C 2.5 A, 250V ac
  • RS Stock No. 204-7477
  • Mfr. Part No. Q82 A 130 05 100
Each
MYR31.21
In Stock
Eaton xEffect MCB, 1P, 10A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4536
  • Mfr. Part No. 239035 FAZ6-C10/1
Each
MYR163.91
In Stock
Spelsberg Consumer Unit Ake 03
  • RS Stock No. 475-1358
  • Mfr. Part No. 73551201
Each
MYR291.91
Temporarily out of stock
ABB RCBO, 10A Current Rating, 1P Poles, Type C
  • RS Stock No. 189-5647
  • Mfr. Part No. 2CSR245041R1104
Each
MYR472.94
Temporarily out of stock
ABB Tmax XT Changeover Contact for use with Circuit Breaker
  • RS Stock No. 232-0186
  • Mfr. Part No. 1SDA066436R1 AUX-C 3Q+2SY 250V XT2-XT4
Each
MYR944.24
In Stock
Siemens SENTRON 4 Phase Busbar, 18mm Pitch
  • RS Stock No. 187-5171
  • Mfr. Part No. 5ST3621
Each
MYR47.68
Temporarily out of stock
ABB IEC Range Busbar
  • RS Stock No. 250-4771
  • Mfr. Part No. 2CDL701001R0250
Each
MYR619.23
Temporarily out of stock
ABB System Pro M Compact S200 MCB, 3P, 32A, Type Z, 400V AC, 110V DC, 10 kA Breaking Capacity
  • RS Stock No. 202-825
  • Mfr. Part No. 2CDS253001R0538
Each
MYR1,828.74
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 5A, 250V ac
  • RS Stock No. 377-2203
  • Mfr. Part No. 3821500041
Each (In a Pack of 10)
MYR6.685
1
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