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

33493 Products showing for Fuses & Circuit Breakers

23 of 999+
Temporarily out of stock
Schneider Electric, Compact MCCB 3P 630A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 212-0277
  • Mfr. Part No. LV433707
Each
PHP412,807.01(exc. VAT)
In Stock
Better World
Schneider Electric RCBO, 32A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 201-2239
  • Mfr. Part No. A9DC3632
Each
PHP14,970.83(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 K60N MCB Mini Circuit Breaker, 3P, 20A Curve B, 400V AC, 6000 A Breaking Capacity
  • RS Stock No. 588-896
  • Mfr. Part No. A9K01320
Each
PHP1,306.19(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 1.5A, 125V
  • RS Stock No. 738-2986
  • Mfr. Part No. 045201.5MRL
Each (In a Pack of 10)
PHP83.636(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Masterpact MCCB 3P 3.2kA, Fixed Mount
  • RS Stock No. 248-3809
  • Mfr. Part No. LV848312
Each
PHP1,453,778.42(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 40A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9714
  • Mfr. Part No. LV510303
Each
PHP20,725.20(exc. VAT)
In Stock
Eaton xEffect FAZ MCB, 1P, 5A Curve B, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 246-274
  • Mfr. Part No. 132419 FAZ-B5/1-NA
Each
PHP2,496.42(exc. VAT)
In Stock
Eaton RCD, 16A, 2 Pole, 30mA, Type C
  • RS Stock No. 922-8721
  • Mfr. Part No. 236217 PKNM-16/1N/C/003-A-MW
Each
PHP9,624.33(exc. VAT)
In Stock
ETI 20A DII Diazed Fuse, E27 Thread Size, gG - gL, 500V ac
  • RS Stock No. 413-670
  • Mfr. Part No. 2312406
Each (In a Pack of 5)
PHP98.92(exc. VAT)
In Stock
Littelfuse 10A Inline Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 878-3882
  • Mfr. Part No. 01500274Z
Each (In a Pack of 10)
PHP241.528(exc. VAT)
Temporarily out of stock
Eaton RCCB, 100A, 2 Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 227-0687
  • Mfr. Part No. 114108 PFGM-100/2/03/-
Each
PHP25,204.74(exc. VAT)
Temporarily out of stock
Schneider Electric Multi9 M9F MCB Mini Circuit Breaker, 1P, 10A Curve C, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 654-615
  • Mfr. Part No. M9U21110
Each
PHP3,618.86(exc. VAT)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 4P 630A, Fixed Mount
  • RS Stock No. 232-0089
  • Mfr. Part No. 1SDA054400R1 T5N630 FF PR221-LS 630A
Each
PHP214,250.25(exc. VAT)
In Stock
Siemens 25A D02 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1089
  • Mfr. Part No. 5SE2325
Each (In a Pack of 10)
PHP89.619(exc. VAT)
Temporarily out of stock
Phoenix Contact 1 Phase Surge Protector, 40kA, 1500V (Volts), DIN Rail Mount
  • RS Stock No. 131-487
  • Mfr. Part No. 2910362
Each
PHP13,173.02(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iIDK RCCB, 25A, 2 Pole, 30mA, Type AC, 220 → 240V ac
  • RS Stock No. 238-3454
  • Mfr. Part No. A9R55225
Each
PHP9,172.43(exc. VAT)
In Stock
Littelfuse 100A Yellow Bolt Down Car Fuse, 32V dc
  • RS Stock No. 787-4397
  • Mfr. Part No. 0298100.ZXEH
Each
PHP333.84(exc. VAT)
Temporarily out of stock
ABB SU 200 M Circuit Breaker, 2P, 15A Curve K, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 287-6395
  • Mfr. Part No. 2CDS272337R0457
Each
PHP7,664.82(exc. VAT)
Temporarily out of stock
Schneider Electric Easy9 1+N Phase Busbar, 230V ac, 9 mm, 18 mm Pitch
  • RS Stock No. 654-221
  • Mfr. Part No. SEPNB112
Each
PHP4,606.22(exc. VAT)
Unavailable
Schneider Electric Pragma Distribution Board, 18 Way, 125 A
  • RS Stock No. 653-8315
  • Mfr. Part No. PRA13753
Each
PHP13,672.53(exc. VAT)
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