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

121 of 999+
Temporarily out of stock
Schneider Electric 1 Phase Surge Arrester, 75kA, 1000V (Volts), Clip-On Mount
  • RS Stock No. 438-791
  • Mfr. Part No. M9L31277
Each
PHP52,181.23(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
Schneider Electric, ComPacT New generation MCCB 4P 250A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-149
  • Mfr. Part No. C25F47E250
Each
PHP602,879.48(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 30A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 341-439
  • Mfr. Part No. NHJL36030
Each
PHP124,326.49(exc. VAT)
Temporarily out of stock
Eaton xE?ect - FRCmM-NA RCCB, 63A, 4 Pole, 30mA, Type A, 240/415V ac
  • RS Stock No. 120-322
  • Mfr. Part No. 167103 FRCMM-63/4/003-A-NA
Each
PHP16,714.00(exc. VAT)
Temporarily out of stock
Schneider Electric Compact Long Rear Connection for use with NS630b
  • RS Stock No. 341-041
  • Mfr. Part No. 33737
Each
PHP31,303.75(exc. VAT)
In Stock
ABB F200 RCCB, 25A, 2 Pole, 30mA, Type AC, 230V
  • RS Stock No. 537-7355
  • Mfr. Part No. 2CSF202001R1250 F202 AC-25/0,03
Each
PHP9,677.85(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 400A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9787
  • Mfr. Part No. LV540319
Each
PHP115,226.34(exc. VAT)
In Stock
ABB Tmax XT Shunt Opening Release for use with Circuit Breaker
  • RS Stock No. 232-0173
  • Mfr. Part No. 1SDA066317R1 SOR XT1..4 220...240VAC/DC
Each
PHP7,809.08(exc. VAT)
Temporarily out of stock
Eaton Circuit Trip Circuit Trip for use with IZMX
  • RS Stock No. 132-432
  • Mfr. Part No. 183988 IZMX-PXRV-TA-1
Each
PHP340,568.17(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 320A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3483
  • Mfr. Part No. 3VA1332-5MH32-0AA0
Each
PHP86,679.78(exc. VAT)
Temporarily out of stock
ABB SU200 M MCB, 1P, 20A Curve K, 277V AC, 48V DC, 15 kA Breaking Capacity
  • RS Stock No. 202-885
  • Mfr. Part No. 2CDS271337R0487
Each
PHP7,092.90(exc. VAT)
Temporarily out of stock
ABB SU200 M MCB, 2P, 32A Curve C, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-038
  • Mfr. Part No. 2CDS272337R0324
Each
PHP18,161.49(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 200A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 341-445
  • Mfr. Part No. NJJL36200
Each
PHP337,331.31(exc. VAT)
In Stock
nVent ERICO Neutral Double Busbar Busbar
  • RS Stock No. 646-812
  • Mfr. Part No. 568719
Each
PHP533.43(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Acti9 iTG40 RCD, 40A, 3 Pole, 300mA, Type A-SI, 400V ac
  • RS Stock No. 239-9997
  • Mfr. Part No. A9Y16740
Each
PHP40,327.60(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Linergy Busbar, 690V, 60mm Pitch
  • RS Stock No. 211-2316
  • Mfr. Part No. LA9ZA32627
Each
PHP19,399.51(exc. VAT)
Temporarily out of stock
Mersen 6A Bolted Tag Fuse, A2C, 250 V dc, 550V ac, 73mm
  • RS Stock No. 178-1015
  • Mfr. Part No. V1019240 / BTIA55V6
Each (In a Pack of 10)
PHP436.991(exc. VAT)
In Stock
Eaton RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, PXK Range
  • RS Stock No. 183-3541
  • Mfr. Part No. 236949 PXK-B20/1N/003-A
Each
PHP6,202.06(exc. VAT)
In Stock
Schurter SMD Non Resettable Fuse 500mA, 125V ac/dc
  • RS Stock No. 777-7514
  • Mfr. Part No. 7010.9790.63
Each
PHP75.53(exc. VAT)
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