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
Fuses - PCB
Fuses - PCB

33502 Products showing for Fuses & Circuit Breakers

214 of 999+
Eaton 235A British Standard Fuse, 660 V ac, 350V dc, 81.7mm
  • RS Stock No. 414-976
  • Mfr. Part No. GSGB235
Each
PHP22,170.53(exc. VAT)
ABB System Pro M Compact SU200 MR MCB, 4P, 8A Curve K, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-717
  • Mfr. Part No. 2CDS274347R0407
Each
PHP57,674.13(exc. VAT)
ABB RCBO, 16A Current Rating, 2P Poles, 100mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6868
  • Mfr. Part No. 2CSR255080R2164 DS201 C16 AC100
Each
PHP6,953.62(exc. VAT)
Hager Hager NKN Circuit Breaker, 4P, 16A Curve C, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 599-802
  • Mfr. Part No. NKN416
Each
PHP20,593.92(exc. VAT)
ABB MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 250-4248
  • Mfr. Part No. 1SDA054546R1
Each
PHP355,972.52(exc. VAT)
Better World
Schneider Electric, ComPacT NSX MCCB 3P 16A, Fixed Mount
  • RS Stock No. 254-6293
  • Mfr. Part No. C10H3TM016
Each
PHP53,406.05(exc. VAT)
Mersen 560A Bolted Tag Fuse, C2, 240 V dc, 415V ac, 133mm
  • RS Stock No. 178-1080
  • Mfr. Part No. L226330 / BTTM42V560
Each
PHP8,689.49(exc. VAT)
Better World
Schneider Electric GFP RCCB, 40A, 4 Pole, 260mA, 277V ac
  • RS Stock No. 211-2469
  • Mfr. Part No. M9R84440
Each
PHP29,597.44(exc. VAT)
ABB Tmax T Shunt Opening Release for use with MCCB
  • RS Stock No. 232-0109
  • Mfr. Part No. 1SDA054873R1 SOR-C 230VAC/DC T4-6
Each
PHP10,273.83(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-632
  • Mfr. Part No. 3VA6560-7KT36-2AA0
Each
PHP502,912.77(exc. VAT)
ABB, T7S MCCB 4P 1.6kA, Fixed Mount
  • RS Stock No. 237-6024
  • Mfr. Part No. 1SDA063002R1 T7S 1600A PR231-LS/I FF
Each
PHP469,074.94(exc. VAT)
Better World
Schneider Electric RCBO, 40A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3350
  • Mfr. Part No. A9DV7640
Each
PHP19,449.78(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 630A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 341-264
  • Mfr. Part No. C063N32AFM
Each
PHP575,125.48(exc. VAT)
Eaton RCCB, 63A, 4 Pole, 100mA, Type AC, 230 V ac, 400 V ac
  • RS Stock No. 227-0748
  • Mfr. Part No. 264307 PFGM-63/4/01
Each
PHP17,674.57(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 1kA, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 655-279
  • Mfr. Part No. C100N320FM
Each
PHP357,918.60(exc. VAT)
Eaton IZMX16 Electronic Circuit Breaker 630A , Fixed
  • RS Stock No. 127-507
  • Mfr. Part No. 183361 IZMX16N3-P06F-1
Each
PHP486,817.30(exc. VAT)
Siemens ALPHA Cover for use with ALPHA 1250 DIN
  • RS Stock No. 629-047
  • Mfr. Part No. 8GK9602-4KK11
Each
PHP5,855.22(exc. VAT)
Schneider Electric RCBO, 16A Current Rating, 3P Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 212-247
  • Mfr. Part No. A9D17316
Each
PHP27,987.42(exc. VAT)
Recom Surge Protector, 10A, 36V dc, Through Hole Mount
  • RS Stock No. 217-537
  • Mfr. Part No. RSP150-40M
1 Tray of 2
PHP18,921.27(exc. VAT)
Eaton 400A Centred Tag Fuse, 50.80 x 85.85mm, 600V ac
  • RS Stock No. 182-1361
  • Mfr. Part No. JKS-400
Each
PHP51,121.03(exc. VAT)
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