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

33477 Products showing for Fuses & Circuit Breakers

69 of 999+
In Stock
ABB System M Pro S200 MCB, 3P, 10A Curve B, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 288-0883
  • Mfr. Part No. 2CDS253001R0105
Each
PHP5,917.37(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 630A 3VA2, 4 channels
  • RS Stock No. 156-612
  • Mfr. Part No. 3VA2463-6JQ42-0AA0
Each
PHP400,616.38(exc. VAT)
Temporarily out of stock
Schneider Electric Masterpact Control Unit for use with Masterpact NW Series Circuit Breaker
  • RS Stock No. 247-1902
  • Mfr. Part No. 48500
Each
PHP306,201.26(exc. VAT)
Temporarily out of stock
Schneider Electric Resi9 R9F2 MCB, 1P, 32A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-142
  • Mfr. Part No. R9F24132
Each
PHP2,965.55(exc. VAT)
In Stock
Mersen Surge Protector
  • RS Stock No. 179-3069
  • Mfr. Part No. 83230136 / STPT23-20K275V-4P-LF
Each
PHP11,859.71(exc. VAT)
In Stock
ABB RCBO, 10A Current Rating, 2P Poles, Type B
  • RS Stock No. 237-5135
  • Mfr. Part No. 2CSR272001R1105
Each
PHP16,561.38(exc. VAT)
In Stock
Schneider Electric Resi9 R9PF MCB, 3P, 20A, 400V AC, 3000 A Breaking Capacity
  • RS Stock No. 276-8968
  • Mfr. Part No. R9PFC720
Each
PHP7,434.03(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELH11 2 Pole Panel Mount, 40A Current Rating
  • RS Stock No. 275-0232
  • Mfr. Part No. IELH11-1-62-40.0-AC-01-V
1 Box of 5
PHP42,512.22(exc. VAT)
Temporarily out of stock
Better World
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 232-0270
  • Mfr. Part No. 1SDA068092R1 XT4N 250 TMA 250A FF
Each
PHP57,436.15(exc. VAT)
Temporarily out of stock
Siemens 20A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 210-6940
  • Mfr. Part No. 3NA7807-6
Each (In a Pack of 3)
PHP3,434.657(exc. VAT)
In Stock
Better World
Schneider Electric RCBO, 25A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti 9 Range
  • RS Stock No. 790-9465
  • Mfr. Part No. A9D56625
Each
PHP22,146.84(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 630A, Breaking Capacity 36kA
  • RS Stock No. 260-9803
  • Mfr. Part No. LV563505
Each
PHP138,886.71(exc. VAT)
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
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 160A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9762
  • Mfr. Part No. LV516333
Each
PHP47,233.34(exc. VAT)
In Stock
Schneider Electric Resi9 R9PF MCB, 3P, 16A, 400V AC, 3000 A Breaking Capacity
  • RS Stock No. 276-8967
  • Mfr. Part No. R9PFC716
Each
PHP6,422.13(exc. VAT)
In Stock
Mersen 6A Slotted Tag Fuse, A1, 250 V dc, 550V ac, 44.5mm
  • RS Stock No. 178-0994
  • Mfr. Part No. G1006578 / BNIT55V6
Each (In a Pack of 10)
PHP269.442(exc. VAT)
Temporarily out of stock
ABB, XT5N MCCB 3P 630A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 236-6880
  • Mfr. Part No. 1SDA100551R1 XT5N 630 3pFF
Each
PHP51,814.73(exc. VAT)
In Stock
Eaton 63A Bolted Tag Fuse, ET, 500 V dc, 690V ac, 63.5mm
  • RS Stock No. 182-1464
  • Mfr. Part No. 63ET
Each (In a Box of 10)
PHP1,381.252(exc. VAT)
Last RS stock
Siemens 63A NH Fuse, NH000, 500V ac
  • RS Stock No. 396-067
  • Mfr. Part No. 3NA3822
1 Pack of 3
PHP6,500.56(exc. VAT)
In Stock
Eaton 56A Bolted Tag Fuse, 690 V, 700 V, 62mm
  • RS Stock No. 182-1569
  • Mfr. Part No. 56ET
Each
PHP1,094.15(exc. VAT)
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