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

128 of 999+
Temporarily out of stock
Siemens 100A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 210-6888
  • Mfr. Part No. 3NA3230-6
Each (In a Pack of 3)
PHP4,572.147(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 3P, 20A Curve C, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-083
  • Mfr. Part No. 2CCS863001R0204
Each
PHP20,954.12(exc. VAT)
In Stock
ABB Tmax XT Auxiliary Contact for use with Circuit Breaker
  • RS Stock No. 232-0179
  • Mfr. Part No. 1SDA066422R1 AUX 250V XT1..XT4
Each
PHP1,709.65(exc. VAT)
In Stock
Eaton PC Board Non Resettable Fuse, Radial 1.6A, 250V ac
  • RS Stock No. 769-3205
  • Mfr. Part No. SR-5-1-6A-BK
Each (In a Pack of 10)
PHP39.648(exc. VAT)
Temporarily out of stock
ABB OS Switch Disconnector for use with Low-Voltage Switch Technology
  • RS Stock No. 259-9764
  • Mfr. Part No. 1SCA114769R1001
Each
PHP6,239.05(exc. VAT)
In Stock
Littelfuse 5A Resettable Fuse, 30V dc
  • RS Stock No. 517-6843
  • Mfr. Part No. RUEF500
Each (In a Pack of 10)
PHP32.373(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 35A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-592
  • Mfr. Part No. 3VA5135-5ED41-0AA0
Each
PHP33,978.50(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Masterpact MCCB 4P 4kA, Fixed Mount
  • RS Stock No. 248-3791
  • Mfr. Part No. LV848097
Each
PHP2,228,748.92(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
Better World
Schneider Electric Straight Busbar Trunking, 3m, 25A, KBA Series
  • RS Stock No. 219-8849
  • Mfr. Part No. KBA25ED2305TW
Each (In a Pack of 6)
PHP17,277.747(exc. VAT)
In Stock
ABB S203L MCB, 3P, 25A Curve D, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 204-245
  • Mfr. Part No. 2CDS243701R0251
Each
PHP7,677.59(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-399
  • Mfr. Part No. 3VA5210-6EF31-2AA0
Each
PHP142,064.75(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 63A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9385
  • Mfr. Part No. 3VA1163-4ED12-0AA0
Each
PHP10,834.84(exc. VAT)
In Stock
ABB RCBO, 50A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, System Pro M Compact Range
  • RS Stock No. 136-7811
  • Mfr. Part No. 2CSR255051R1504 DSE201 C50 AC30 - N Blue
Each
PHP6,646.65(exc. VAT)
Temporarily out of stock
Lovato P1RD MCCB, 25A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 276-5662
  • Mfr. Part No. P1RD2P25A030
Each
PHP13,514.10(exc. VAT)
Temporarily out of stock
Eaton xEffect xEffect - FAZ-T MCB, 3P, 32A Curve C, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 129-393
  • Mfr. Part No. 142495 FAZT-C32/3
Each
PHP16,545.71(exc. VAT)
Temporarily out of stock
ABB Plastic Consumer Unit, IP65 1SLM006501A
  • RS Stock No. 286-4981
  • Mfr. Part No. 1SLM006501A2215
Each
PHP8,669.48(exc. VAT)
Temporarily out of stock
Siemens 80A Centred Tag Fuse, NH000, 400V
  • RS Stock No. 230-2964
  • Mfr. Part No. 3NA6824-4
Each (In a Pack of 3)
PHP713.737(exc. VAT)
Temporarily out of stock
ABB Tmax XT Changeover Contact for use with Circuit Breaker
  • RS Stock No. 232-0187
  • Mfr. Part No. 1SDA066446R1 AUX-C 1Q+1SY 24VDC XT1...4
Each
PHP5,034.90(exc. VAT)
Temporarily out of stock
Z-R230 ICS-R16 MCB, 16A, 240V AC
  • RS Stock No. 261-953
  • Mfr. Part No. ICS-R16A230B100 Z-R230/16-10
1 Pack of 2
PHP3,012.31(exc. VAT)
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