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

143 of 999+
Siemens SENTRON 3VA9 Wire Connector for use with 3VA1 160
  • RS Stock No. 218-1792
  • Mfr. Part No. 3VA9114-0KP10
Each
PHP11,123.04(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3785
  • Mfr. Part No. 3VA2040-7KP42-0AA0
Each
PHP151,842.41(exc. VAT)
Schneider Electric 34 Way Metal Consumer Unit, 100A, IP2X, IP3X EZ9E
  • RS Stock No. 654-803
  • Mfr. Part No. EZ9E312MCCU
Each
PHP17,138.27(exc. VAT)
ABB S800U MCB, 2P, 25A, Type Z, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-904
  • Mfr. Part No. 2CCS862017R0255
Each
PHP15,995.79(exc. VAT)
Eaton 2A Bottle Fuse, 500V
  • RS Stock No. 258-963
  • Mfr. Part No. 2D27R FUSE-D2 2A F GR 500VAC E27
1 Pack of 5
PHP2,023.10(exc. VAT)
Eaton Switch Disconnector for use with Circuit Breaker
  • RS Stock No. 228-777
  • Mfr. Part No. CCP2-1-30M
1 Pack of 6
PHP20,590.52(exc. VAT)
Eaton Eaton xEnergy Main Assembly Kit for use with NZM2-3
  • RS Stock No. 246-412
  • Mfr. Part No. 185206 XPA-NZM2-3-ARC
Each
PHP1,737.47(exc. VAT)
ABB System Pro M Compact S200M MCB, 3P, 40A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 204-364
  • Mfr. Part No. 2CDS273001R0557
Each
PHP32,076.01(exc. VAT)
Schneider Electric Acti9 A9F MCB, 4P, 1.6A, Type Z, 500V AC, 250V DC, 415 V Breaking Capacity
  • RS Stock No. 577-185
  • Mfr. Part No. A9F92472
1 Pack of 3
PHP68,068.05(exc. VAT)
ABB, Parts MCCB 4P 0A
  • RS Stock No. 236-6843
  • Mfr. Part No. 1SDA068642R1
Each
PHP2,446.92(exc. VAT)
Phoenix Contact Circuit Breaker - VARIOFACE 250V ac/dc Voltage Rating DIN Rail, 32A Current Rating
  • RS Stock No. 129-765
  • Mfr. Part No. 2302382
Each
PHP7,535.62(exc. VAT)
Schurter PC Board Non Resettable Fuse, Radial 40mA, 250V ac
  • RS Stock No. 866-8402
  • Mfr. Part No. 0034.6000
Each (In a Pack of 100)
PHP34.729(exc. VAT)
Siemens SIRIUS 3 Phase Busbar, 45mm Pitch
  • RS Stock No. 783-9246
  • Mfr. Part No. 3RM1910-1BA
Each
PHP1,429.39(exc. VAT)
ABB RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A
  • RS Stock No. 231-9950
  • Mfr. Part No. 2CSR255180R1324 DS201 C32 A30
1 Box of 1
PHP16,173.00(exc. VAT)
Siemens SENTRON 5SL64 MCB, 4P, 13A Curve B, 440V AC, 62.5V DC, 6 kA Breaking Capacity
  • RS Stock No. 328-299
  • Mfr. Part No. 5SL6413-6
Each
PHP8,851.09(exc. VAT)
Schneider Electric RCBO, 20A Current Rating, 2P Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-446
  • Mfr. Part No. A9D50220
Each
PHP43,132.32(exc. VAT)
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0245
  • Mfr. Part No. 8GK1031-1KK10
Each
PHP20,815.62(exc. VAT)
Eaton 250A Ceramic Cartridge Fuse, 150 x 54mm
  • RS Stock No. 254-889
  • Mfr. Part No. 250NHG03BI-400 BUSSMANN 250A 400V GG 03
1 Pack of 3
PHP3,645.27(exc. VAT)
SIBA 35A D02 Neozed Fuse, E18 Thread Size, gR, 440V ac
  • RS Stock No. 421-429
  • Mfr. Part No. 10-028-07/35A
Each (In a Pack of 5)
PHP560.19(exc. VAT)
ABB, Tmax XT MCCB 4P 1.6kA, Fixed Mount
  • RS Stock No. 236-6881
  • Mfr. Part No. 1SDA101117R1 XT7S1600 EkipDip LS/I 4pFF
Each
PHP450,915.20(exc. VAT)
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