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

301 of 999+
Temporarily out of stock
Schneider Electric Multi 9 Multi9 MCB, 3P, 63A, 240V AC, 10 kA Breaking Capacity
  • RS Stock No. 119-431
  • Mfr. Part No. M9F52363
Each
PHP27,959.54(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 249-783
  • Mfr. Part No. 3VA6440-8HL31-2AA0
Each
PHP348,959.88(exc. VAT)
Temporarily out of stock
Siemens 5SM26 RCCB, 40A, 4 Pole, 300mA, Type AC, 400V
  • RS Stock No. 328-315
  • Mfr. Part No. 5SM2643-0
Each
PHP6,693.29(exc. VAT)
Temporarily out of stock
ABB Tmax Plug In Unit for use with T4
  • RS Stock No. 237-5976
  • Mfr. Part No. 1SDA054744R1 T4 WFP-VR
Each
PHP39,220.11(exc. VAT)
In Stock
Better World
Schneider Electric 220 → 240V ac Undervoltage Release Circuit Trip for use with ARA, iC40, ic60 MCB, iC65, iDPN
  • RS Stock No. 791-2799
  • Mfr. Part No. A9A26960
Each
PHP10,608.45(exc. VAT)
Temporarily out of stock
Eaton xE?ect - FBHmV RCCB, 80A, 2 Pole, 300mA, 240/415V ac
  • RS Stock No. 121-130
  • Mfr. Part No. 170137 FBHMV-80/2/03-S/A
Each
PHP22,104.24(exc. VAT)
Temporarily out of stock
ABB S804C MCB, 4P, 40A Curve B, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 141-006
  • Mfr. Part No. 2CCS884001R0405
Each
PHP18,071.85(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 1P 25A, Breaking Capacity 25 KA, Fixed Mount
  • RS Stock No. 119-289
  • Mfr. Part No. C10N1TM025
Each
PHP17,627.72(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with XT4
  • RS Stock No. 236-7299
  • Mfr. Part No. 1SDA067473R1 TMA 63-630 XT4 4p
Each
PHP43,725.78(exc. VAT)
Temporarily out of stock
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)1, NZM1
  • RS Stock No. 240-430
  • Mfr. Part No. 100683 NZM1-XTVDV-NA
Each
PHP7,844.27(exc. VAT)
Temporarily out of stock
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)1, NZM1
  • RS Stock No. 248-656
  • Mfr. Part No. 100671 NZM1-XTVDVR-60-NA
Each
PHP8,430.75(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Busbar Feed Unit, Canalis KBB Series
  • RS Stock No. 219-8864
  • Mfr. Part No. KBB40ABG44W
Each
PHP13,236.77(exc. VAT)
In Stock
Littelfuse 0.9A Resettable Fuse, 72V
  • RS Stock No. 517-6679P
  • Mfr. Part No. RXEF090
Each (Supplied in a Bag)
PHP20.79(exc. VAT)
Temporarily out of stock
Siemens SENTRON Nut Keeper Kit for use with 3VA1
  • RS Stock No. 269-7120
  • Mfr. Part No. 3VA9213-0QG00
Each (In a Pack of 3)
PHP926.58(exc. VAT)
Temporarily out of stock
Siemens 224A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 210-6892
  • Mfr. Part No. 3NA3242-6
Each (In a Pack of 3)
PHP4,572.147(exc. VAT)
Temporarily out of stock
Eaton Eaton xEffect SASY 60i Busbar
  • RS Stock No. 235-216
  • Mfr. Part No. 107203 BBT-CU-BAR500/720-50
Each (In a Pack of 6)
PHP2,056.518(exc. VAT)
Temporarily out of stock
Eaton Extension Connector for use with N(S)4, NZM4
  • RS Stock No. 230-499
  • Mfr. Part No. 119861 NZM4-XKV95-2KB
Each
PHP35,262.54(exc. VAT)
In Stock
Eaton 100A Centred Tag Fuse, NH01, 500V ac
  • RS Stock No. 703-8699
  • Mfr. Part No. 100NHG01B
Each
PHP660.16(exc. VAT)
Temporarily out of stock
Better World
Kimberly Clark
  • RS Stock No. 210-3517
  • Mfr. Part No. 3VA9163-0JA12
Each
PHP2,139.44(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 25A, Fixed Mount
  • RS Stock No. 260-7586
  • Mfr. Part No. C11F3TM025B
Each
PHP30,915.02(exc. VAT)
1
301
1676
Results per page

Related links