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

141 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB 2P 225A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-326
  • Mfr. Part No. 3VA5222-6ED61-0AA0
Each
PHP130,856.81(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 2P 150A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-441
  • Mfr. Part No. 3VA5215-6ED61-0AA0
Each
PHP90,147.68(exc. VAT)
Temporarily out of stock
Legrand 100A Cartridge Fuse, 61 x 125mm, 500V
  • RS Stock No. 266-3184
  • Mfr. Part No. 0 166 45
1 Box of 3
PHP10,087.00(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 260-7870
  • Mfr. Part No. C25B42D250
Each
PHP148,873.10(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 20A Curve C, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 230-896
  • Mfr. Part No. 113763 FAZ-C20/1-NA-DC
Each
PHP8,943.93(exc. VAT)
Temporarily out of stock
Eaton SASY 60i Busbar
  • RS Stock No. 251-376
  • Mfr. Part No. 215269 CU12X10
Each
PHP4,493.04(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 80A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 230-947
  • Mfr. Part No. 107803 NZMH2-A80-BT-NA
Each
PHP54,909.86(exc. VAT)
In Stock
Littelfuse 10A Red Blade Car Fuse, 32V dc
  • RS Stock No. 787-4101
  • Mfr. Part No. 0287010.PXCN
Each (In a Pack of 10)
PHP18.185(exc. VAT)
In Stock
Littelfuse 0.75A Resettable Fuse, 33V dc
  • RS Stock No. 787-4259
  • Mfr. Part No. 1812L075/33DR
Each (In a Pack of 10)
PHP25.542(exc. VAT)
In Stock
Schneider Electric Circuit Trip Circuit Trip for use with ComPacT new generation NSX250
  • RS Stock No. 130-400
  • Mfr. Part No. C2544B250
Each
PHP258,007.65(exc. VAT)
Unavailable
Schneider Electric, NSX MCCB 3P 630A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 219-8374
  • Mfr. Part No. LV432805
Each
PHP342,743.52(exc. VAT)
In Stock
Schneider Electric Cable Connection Kit for use with ComPact NS630b → 1600 Circuit Breaker
  • RS Stock No. 247-1850
  • Mfr. Part No. 33641
Each
PHP38,100.22(exc. VAT)
In Stock
Schneider Electric Motor Mechanism for use with ComPacT NSX New Generation
  • RS Stock No. 130-374
  • Mfr. Part No. LV429435
Each
PHP71,864.88(exc. VAT)
In Stock
Better World
Schneider Electric Compact NSX Connecting Terminals for use with Compact NSX circuit breaker
  • RS Stock No. 211-2640
  • Mfr. Part No. LV429248
Each
PHP15,510.47(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON 5SL60 MCB, 1P + N, 8A Curve C, 230V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 328-374
  • Mfr. Part No. 5SL6008-7KL
Each
PHP5,564.30(exc. VAT)
Temporarily out of stock
Schneider Electric Resi9 R9F2 MCB, 3P, 63A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-144
  • Mfr. Part No. R9F24363
Each
PHP18,703.21(exc. VAT)
Temporarily out of stock
Schneider Electric 48V (Volts) Undervoltage Release Circuit Trip for use with Multi 9 Series Circuit Breaker
  • RS Stock No. 339-293
  • Mfr. Part No. M9A26961
Each
PHP16,595.55(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Masterpact Chassis for use with Masterpact MTZ1 06-10 L1, Masterpact MTZ1 16 H1, Masterpact MTZ1 16
  • RS Stock No. 248-3762
  • Mfr. Part No. LV833726
Each
PHP335,587.75(exc. VAT)
In Stock
ABB S301 MCB, 1P, 16A Curve C, 415V AC, 125V DC, 25 kA Breaking Capacity
  • RS Stock No. 203-015
  • Mfr. Part No. 2CDS381001R0164
Each
PHP2,371.60(exc. VAT)
In Stock
Siemens Push Button Circuit Trip
  • RS Stock No. 521-5190
  • Mfr. Part No. 5TE4811
Each
PHP1,573.29(exc. VAT)
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