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

33502 Products showing for Fuses & Circuit Breakers

246 of 999+
Temporarily out of stock
Schneider Electric MasterPacT Locking Kit for use with MasterPact NW
  • RS Stock No. 341-053
  • Mfr. Part No. 64939
Each
PHP22,759.37(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 90A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 147-591
  • Mfr. Part No. 3VA5190-4EC31-0AA0
Each
PHP38,590.94(exc. VAT)
In Stock
Mersen 100A Bolted Tag Fuse, A3, 240 V dc, 415V ac, 73mm
  • RS Stock No. 178-1030
  • Mfr. Part No. S1045274 / BTIS42V100
Each (In a Pack of 10)
PHP1,179.338(exc. VAT)
Temporarily out of stock
ABB S301 MCB, 1P, 50A Curve D, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-280
  • Mfr. Part No. 2CDS381001R0501
Each
PHP11,205.08(exc. VAT)
Temporarily out of stock
Hager RCBO, 16A Current Rating, 1P + N Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 597-993
  • Mfr. Part No. ADH823F
Each
PHP23,790.48(exc. VAT)
Currently unavailable
RS PRO 25A NH Fuse, NH000, 415V ac
  • RS Stock No. 221-3672
Each
PHP1,165.00(exc. VAT)
Temporarily out of stock
Eaton 20A Tag Fuse, 22 x 82mm, 0.46/0.66kV
  • RS Stock No. 229-159
  • Mfr. Part No. 20H07-660
1 Pack of 20
PHP62,055.44(exc. VAT)
In Stock
ABB DDA 200 A RCD, 25A, 3+N Pole, 30mA, Type A
  • RS Stock No. 610-3442
  • Mfr. Part No. 2CSB204101R1250 - DDA204A-25/0,03
Each
PHP8,962.84(exc. VAT)
Temporarily out of stock
25A Tag Fuse, 22 x 139mm, 0.66/1.2kV
  • RS Stock No. 261-976
  • Mfr. Part No. TAC25
1 Pack of 10
PHP23,830.19(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 10A, 125V ac/dc
  • RS Stock No. 541-3467
  • Mfr. Part No. 0451010.MRL
Each (In a Pack of 10)
PHP116.771(exc. VAT)
Temporarily out of stock
ABB, Tmax MCCB 4P 800A, Fixed Mount
  • RS Stock No. 237-6000
  • Mfr. Part No. 1SDA061979R1 T7S 800A PR332-LSIRc FF
Each
PHP346,410.52(exc. VAT)
Temporarily out of stock
Wickmann Non Resettable Fuse 2A, 250V ac
  • RS Stock No. 174-0501
  • Mfr. Part No. 37012000410
1 Box of 1000
PHP31,316.67(exc. VAT)
In Stock
Hager NFT MCB, 3+N, 32A, 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4753
  • Mfr. Part No. NFT832
Each
PHP12,784.61(exc. VAT)
In Stock
Eaton 10A British Standard Fuse, LCT, 240 V ac, 150V dc, 38mm
  • RS Stock No. 156-8759
  • Mfr. Part No. 10LCT
Each (In a Pack of 5)
PHP230.584(exc. VAT)
In Stock
Legrand 4115 RCD, 63A, 1+N Pole, 30mA, Type AC
  • RS Stock No. 863-7751
  • Mfr. Part No. 4 115 06
Each
PHP5,901.20(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 A9V4 MCB, 3P, 40A, 415V AC
  • RS Stock No. 244-909
  • Mfr. Part No. A9V41340
Each
PHP20,383.45(exc. VAT)
In Stock
Schurter SMD Non Resettable Fuse 3.15A, 125 V dc, 250V ac
  • RS Stock No. 736-0769
  • Mfr. Part No. 3403.0171.24
Each (In a Pack of 10)
PHP55.238(exc. VAT)
In Stock
Better World
Siemens 5sV3 RCCB, 16A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 211-9628
  • Mfr. Part No. 5SV3311-6KL
Each
PHP10,662.91(exc. VAT)
In Stock
Schneider Electric Multi 9 Busbar Connector, 1000V, 18mm Pitch
  • RS Stock No. 214-2108
  • Mfr. Part No. M9XUPC04
Each
PHP4,682.21(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-974
  • Mfr. Part No. 3VA6110-7HL31-2AA0
Each
PHP82,841.32(exc. VAT)
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