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

33502 Products showing for Fuses & Circuit Breakers

218 of 999+
Rittal Earthing Strap, 16mm² Wire Range
  • RS Stock No. 263-3736
  • Mfr. Part No. 2568000
Each (In a Pack of 5)
PHP693.084(exc. VAT)
Siemens SENTRON 1 Phase Busbar, 18mm Pitch
  • RS Stock No. 226-0812
  • Mfr. Part No. 5ST3633
Each (In a Pack of 10)
PHP123.20(exc. VAT)
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 500A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9796
  • Mfr. Part No. LV563308
Each
PHP175,291.91(exc. VAT)
ABB S800S MCB, 1P, 13A Curve D, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-863
  • Mfr. Part No. 2CCS861001R0131
Each
PHP5,852.23(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 160A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 654-999
  • Mfr. Part No. C12B6TM160L
Each
PHP78,057.83(exc. VAT)
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100/160/250 Circuit Breakers
  • RS Stock No. 212-031
  • Mfr. Part No. C1047A100
Each
PHP267,826.62(exc. VAT)
Schneider Electric PowerPact Circuit Breaker - PowerPacT 3 Pole 347V ac Voltage Rating Clip-On, 125A Current Rating
  • RS Stock No. 205-240
  • Mfr. Part No. BJF36125
Each
PHP176,888.57(exc. VAT)
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 4P 125A, Fixed Mount
  • RS Stock No. 232-0257
  • Mfr. Part No. 1SDA067427R1 XT1N 160 TMD 125A FF
Each
PHP43,303.54(exc. VAT)
Better World
Schneider Electric, Masterpact MCCB 4P 1.25kA, Fixed Mount
  • RS Stock No. 248-3797
  • Mfr. Part No. LV848266
Each
PHP680,287.88(exc. VAT)
Eaton 12 → 110 V ac, 12 → 60V dc Shunt Trip Shunt trip for use with FAZ Series MCB/RCBO
  • RS Stock No. 922-6951
  • Mfr. Part No. 278518 FAZ-XAA-C-12-110VAC
Each
PHP5,113.68(exc. VAT)
ABB Tmax XT Rotary Handle for use with Tmax XT
  • RS Stock No. 237-6095
  • Mfr. Part No. 1SDA066581R1 RHS R XT1-XT3 F/P STAN
Each
PHP13,309.48(exc. VAT)
ABB RCBO, 10A Current Rating, 4P Poles, Type C
  • RS Stock No. 237-5094
  • Mfr. Part No. 2CSR254001R1104
Each
PHP27,868.76(exc. VAT)
Schneider Electric Masterpact Spare Parts for use with Masterpact MasterPact MTZ2 Circuit Breaker
  • RS Stock No. 654-175
  • Mfr. Part No. LV834036SP
Each
PHP126,691.52(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 1.25kA, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 345-327
  • Mfr. Part No. C125N45AFM
Each
PHP1,063,269.77(exc. VAT)
Bourns SMD Non Resettable Fuse 2.5A, 32V dc
  • RS Stock No. 692-5009
  • Mfr. Part No. SF-0603S250-2
Each (In a Pack of 10)
PHP25.485(exc. VAT)
Siemens SENTRON 5SY5 MCB, 4P, 63A Curve C, 400V AC, 880V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-377
  • Mfr. Part No. 5SY5463-7
Each
PHP45,858.56(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 80A, Breaking Capacity 36 kA
  • RS Stock No. 209-6858
  • Mfr. Part No. 3VA1180-4EF42-0AA0
Each
PHP36,219.87(exc. VAT)
Siemens SENTRON 3 Phase Busbar, 17.8mm Pitch
  • RS Stock No. 202-7064
  • Mfr. Part No. 5ST3624
Each (In a Pack of 10)
PHP1,015.683(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4581
  • Mfr. Part No. 3VA2125-7KQ42-0AA0
Each
PHP150,077.40(exc. VAT)
RS PRO Auxiliary Release Circuit Trip for use with MS32 & MSB32 Motor Protection Circuit Breakers
  • RS Stock No. 121-6864
Each
PHP668.98(exc. VAT)
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