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

33476 Products showing for Fuses & Circuit Breakers

41 of 999+
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 3P 400A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-5209
  • Mfr. Part No. 3VA2340-5HN32-0AA0
Each
PHP116,090.34(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 500A, Breaking Capacity 85 kA
  • RS Stock No. 209-7076
  • Mfr. Part No. 3VA2450-6KP32-0AA0
Each
PHP219,052.00(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 55 kA, DIN Rail Mount
  • RS Stock No. 271-9784
  • Mfr. Part No. 3VA1116-5EF36-0DD0
Each
PHP92,751.88(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 125A, Fixed Mount
  • RS Stock No. 260-7942
  • Mfr. Part No. C25N3TM125
Each
PHP98,573.84(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, PowerPact MCCB 3P 60A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 219-8419
  • Mfr. Part No. NHGF36060TW
Each
PHP43,253.96(exc. VAT)
Temporarily out of stock
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 207-2742
  • Mfr. Part No. 2906828
Each
PHP11,100.85(exc. VAT)
In Stock
Schneider Electric, ComPacT Circuit breaker 3P 100A, Breaking Capacity 25 KA, Fixed Mount
  • RS Stock No. 119-284
  • Mfr. Part No. C11B34V100B
Each
PHP97,110.80(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 630A, Breaking Capacity 50kA
  • RS Stock No. 260-9805
  • Mfr. Part No. LV563510
Each
PHP150,585.61(exc. VAT)
Temporarily out of stock
Lovato RCBO, 40A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, P1 Range
  • RS Stock No. 277-5063
  • Mfr. Part No. P1RE1NC40AC030
Each
PHP8,502.97(exc. VAT)
Temporarily out of stock
Eaton Single Phase Surge Arrester, 10kA, 1.4kV, DIN Rail Mount
  • RS Stock No. 123-626
  • Mfr. Part No. 170485 SPDT3-280/2
Each
PHP9,735.58(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON 5SL60 MCB, 1P + N, 10A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 328-375
  • Mfr. Part No. 5SL6010-7MF
Each
PHP18,559.02(exc. VAT)
In Stock
Wickmann 1A Black Car Fuse
  • RS Stock No. 174-0616
  • Mfr. Part No. 02400113P
Each (In a Pack of 50)
PHP163.647(exc. VAT)
In Stock
Schneider Electric A9Z RCCB, 40A, 4 Pole, 30mA, Type A-SI, 380-415V ac
  • RS Stock No. 212-257
  • Mfr. Part No. A9Z31440
Each
PHP19,040.21(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 874-4284
  • Mfr. Part No. 3VA1140-3ED36-0AA0
Each
PHP24,738.83(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 630A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5241
  • Mfr. Part No. 3VA2463-6HL32-0AA0
Each
PHP153,755.04(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 320A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9780
  • Mfr. Part No. LV540305
Each
PHP79,610.02(exc. VAT)
In Stock
Littelfuse 0.05A Resettable Fuse, 30V dc
  • RS Stock No. 517-7206
  • Mfr. Part No. MICROSMD005F-2
Each (In a Pack of 20)
PHP16.434(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 32A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9713
  • Mfr. Part No. LV510302
Each
PHP20,725.20(exc. VAT)
In Stock
Eaton 13A DIN Rail Mount 6.3 x 32mm Fuse Block, 300V
  • RS Stock No. 233-0619
  • Mfr. Part No. BK-S-8102-1X-DIN
1 Box of 198
PHP85,386.31(exc. VAT)
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