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

33483 Products showing for Fuses & Circuit Breakers

10 of 999+
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 800A , DIN Rail
  • RS Stock No. 127-487
  • Mfr. Part No. 183347 IZMX16N3-V08W-1
Each
PHP349,682.93(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY Circuit Breaker, 1P, 16A Curve D, 440V AC, 60V DC, 30 kA Breaking Capacity
  • RS Stock No. 664-371
  • Mfr. Part No. 5SY8116-8
Each
PHP3,448.56(exc. VAT)
Temporarily out of stock
Siemens SENTRON Adapter for use with Circuit breaker with contactor
  • RS Stock No. 211-3848
  • Mfr. Part No. 8US1261-5FP08
Each
PHP4,102.96(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 2P 175A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-479
  • Mfr. Part No. 3VA5217-6EC61-0AA0
Each
PHP117,894.92(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
Eaton 100A Bolted Tag Fuse, FE, 690 V ac, 500V dc, 63.5mm
  • RS Stock No. 182-1567
  • Mfr. Part No. 100FE
Each
PHP1,960.20(exc. VAT)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 800A, Fixed Mount
  • RS Stock No. 232-0134
  • Mfr. Part No. 1SDA060268R1 T6N800 FF PR221-LS/I 800A
Each
PHP124,919.49(exc. VAT)
Temporarily out of stock
Eaton Three Phase Surge Protector, 40kA, 1.4kV, DIN Rail Mount
  • RS Stock No. 121-152
  • Mfr. Part No. 167629 SPCT2-280-3+NPE/BB
Each
PHP19,524.42(exc. VAT)
In Stock
Lovato Single Phase Surge Protector, 40kA, DIN Rail Mount
  • RS Stock No. 248-5668
  • Mfr. Part No. SG2DG600M2
Each
PHP4,705.32(exc. VAT)
In Stock
Better World
Schneider Electric iC60 RCD, 25A, 2 Pole, 30mA
  • RS Stock No. 776-8731
  • Mfr. Part No. A9V41225
Each
PHP9,068.89(exc. VAT)
In Stock
Schneider Electric Acti9 A9P MCB, 1P, 16A, 230V AC, 4500 A Breaking Capacity
  • RS Stock No. 276-8734
  • Mfr. Part No. A9P12616
Each
PHP4,103.41(exc. VAT)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, 5kA, 450V (Volts), DIN Rail Mount
  • RS Stock No. 254-4807
  • Mfr. Part No. 2803069
Each
PHP13,092.53(exc. VAT)
In Stock
Better World
Schneider Electric MCCB 3P 15 → 125A, Fixed Mount
  • RS Stock No. 178-7901
  • Mfr. Part No. LV426967
Each
PHP3,632.83(exc. VAT)
In Stock
Penta Fiberglass Earth Set Max. Conductor Size Cable CC 70mm² / terre 35mm² 317.5mm
  • RS Stock No. 248-9889
  • Mfr. Part No. KPIMT49S
Each
PHP87,807.12(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Acti 9 RCD
  • RS Stock No. 219-9027
  • Mfr. Part No. A9N26948
Each
PHP8,804.40(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 400A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 260-8125
  • Mfr. Part No. C40N32D400
Each
PHP282,486.60(exc. VAT)
Unavailable
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 4P 250A, Fixed Mount
  • RS Stock No. 221-1066
  • Mfr. Part No. LV433856
Each
PHP334,581.40(exc. VAT)
In Stock
ABB S 200 2CDS252001R MCB, 2P, 2A, Type Z, 400V AC, 125V DC, 230 V Breaking Capacity
  • RS Stock No. 288-0887
  • Mfr. Part No. 2CDS252001R0278
Each
PHP5,330.58(exc. VAT)
Temporarily out of stock
Hager NEN MCB, 2P, 63A Curve B, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4969
  • Mfr. Part No. NEN263
Each
PHP16,836.48(exc. VAT)
In Stock
ABB, XT2N MCCB 3P 63A, Fixed Mount
  • RS Stock No. 237-6213
  • Mfr. Part No. 1SDA067016R1 XT2N 160 TMA 63A FF
Each
PHP21,390.51(exc. VAT)
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