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

192 of 999+
Temporarily out of stock
Eaton SASY 60i Busbar, 60mm Pitch
  • RS Stock No. 235-419
  • Mfr. Part No. 007466 CU20X5-2250
Each
PHP5,552.27(exc. VAT)
Temporarily out of stock
Schneider Electric Cross Elbow Busbar Trunking, 800mm, 630A, Canalis Series
  • RS Stock No. 340-965
  • Mfr. Part No. KSA630DZE43A
Each
PHP173,060.64(exc. VAT)
Temporarily out of stock
Schneider Electric PowerPact Electronic Circuit Breaker 600A PowerPacT, Fixed Type C
  • RS Stock No. 341-450
  • Mfr. Part No. NLLF36000S60XTW
Each
PHP309,844.85(exc. VAT)
Temporarily out of stock
Hager CDC RCCB, 40A, 2 Pole, 30mA, Type AC, 127 → 230V ac
  • RS Stock No. 597-962
  • Mfr. Part No. CDC247F
Each
PHP14,167.04(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 630A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 341-265
  • Mfr. Part No. C063N35AFM
Each
PHP652,062.33(exc. VAT)
Temporarily out of stock
Phoenix Contact CAPAROC Busbar Connector, 24V dc
  • RS Stock No. 269-7938
  • Mfr. Part No. 1110991
Each (In a Pack of 12)
PHP644.646(exc. VAT)
Temporarily out of stock
ABB S802S MCB, 2P, 8A Curve B, 690V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-683
  • Mfr. Part No. 2CCS862001R0085
Each
PHP13,385.11(exc. VAT)
In Stock
Better World
Siemens Surge Protector, 24V dc, Clip-On Mount
  • RS Stock No. 122-9486
  • Mfr. Part No. 3RT2936-1ER00
Each
PHP2,392.12(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Resi9 Range
  • RS Stock No. 212-136
  • Mfr. Part No. R9D01632
Each
PHP11,457.82(exc. VAT)
Temporarily out of stock
ABB 250V ac ON-OFF Switch Circuit Trip for use with E210 Switches
  • RS Stock No. 183-3691
  • Mfr. Part No. 2CCA703007R0001
Each
PHP2,279.14(exc. VAT)
In Stock
Siemens 2A DII Diazed Fuse, E27 Thread Size, gG, 500V ac
  • RS Stock No. 396-152
  • Mfr. Part No. 5SB211
Each (In a Pack of 5)
PHP99.932(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 1.5A Curve B, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 244-888
  • Mfr. Part No. 132770 FAZ-B1,5/3-RT
Each
PHP12,536.16(exc. VAT)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 630A, Fixed
  • RS Stock No. 122-332
  • Mfr. Part No. LV563516
Each
PHP51,550.17(exc. VAT)
Temporarily out of stock
Sato Parts 10A Rail Mount Fuse Holder for 6.3 x 32 mm, 6.35 x 30 x 6.35 x 31.8 mm Fuse, 1P, 250V
  • RS Stock No. 229-4966
  • Mfr. Part No. F-700-AL
Each
PHP605.66(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 250 Circuit Breakers
  • RS Stock No. 260-7829
  • Mfr. Part No. C2534V250
Each
PHP161,972.65(exc. VAT)
In Stock
RS PRO SMD Non-Resettable Surface Mount Fuse 2A, 63V
  • RS Stock No. 252-2123
Each (In a Pack of 50)
PHP4.841(exc. VAT)
In Stock
Schneider Electric R9E RCCB, 63A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 276-8941
  • Mfr. Part No. R9ERA263
Each
PHP13,041.78(exc. VAT)
In Stock
Eaton MCCB 1P 125A, Breaking Capacity 80 kA, Fixed Mount
  • RS Stock No. 628-8082
  • Mfr. Part No. 259142 PN1-125
1 Box of 1
PHP29,824.95(exc. VAT)
In Stock
Siemens Push Button Circuit Trip for use with Standard rail mounting
  • RS Stock No. 209-5272
  • Mfr. Part No. 5TE4820
Each
PHP3,939.29(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 15A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-634
  • Mfr. Part No. 3VA5195-5EF41-0AA0
Each
PHP50,916.25(exc. VAT)
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