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

114 of 999+
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3666
  • Mfr. Part No. 3VA2025-7HL42-0AA0
Each
PHP59,334.22(exc. VAT)
Schneider Electric RCBO, 13A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Resi9 Range
  • RS Stock No. 212-135
  • Mfr. Part No. R9D01613
Each
PHP10,994.46(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 874-4402
  • Mfr. Part No. 3VA2225-5HL32-0AA0
Each
PHP75,291.65(exc. VAT)
ABB System Pro M Compact S200M MCB, 2P, 4A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-149
  • Mfr. Part No. 2CDS272001R0337
Each
PHP7,396.68(exc. VAT)
ABB Plastic Consumer Unit, IP65 1SLM006501A
  • RS Stock No. 286-4981
  • Mfr. Part No. 1SLM006501A2215
Each
PHP8,669.48(exc. VAT)
Eaton 32A British Standard Fuse, A2, 500V ac, 73.5mm
  • RS Stock No. 156-8591
  • Mfr. Part No. AAO32M40
Each (In a Pack of 5)
PHP472.926(exc. VAT)
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 400A, Fixed Mount
  • RS Stock No. 232-0096
  • Mfr. Part No. 1SDA054441R1 T5S400 FF TMA 400A
Each
PHP106,126.84(exc. VAT)
Schneider Electric Acti9 iID RCCB, 25A, 2 Pole, 300mA, Type AC, 220 → 240V ac
  • RS Stock No. 654-768
  • Mfr. Part No. A9R41225
Each
PHP11,549.04(exc. VAT)
Eaton xEffect FAZ MCB, 4P, 25A Curve C, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 239-787
  • Mfr. Part No. 190819 FAZ-C25/4-NA
Each
PHP18,840.90(exc. VAT)
Siemens 50A NH Fuse, NH000, 500V ac
  • RS Stock No. 269-8341
  • Mfr. Part No. 3ND1820
Each (In a Pack of 3)
PHP1,391.507(exc. VAT)
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100/160 Circuit Breakers
  • RS Stock No. 260-9351
  • Mfr. Part No. C103MA025
Each
PHP11,048.17(exc. VAT)
RS PRO PC Board Non Resettable Fuse, Radial 100mA, 250V
  • RS Stock No. 767-5074
Each (In a Pack of 10)
PHP47.653(exc. VAT)
ABB MCCB Molded Case Circuit Breaker 3P 320A, Fixed Mount
  • RS Stock No. 250-4068
  • Mfr. Part No. 1SDA054334R1
Each
PHP157,187.09(exc. VAT)
Siemens SENTRON Terminal for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-694
  • Mfr. Part No. 3VW9011-0AL72
1 Kit
PHP31,230.44(exc. VAT)
Wickmann 0.3A Resettable Fuse, 60V dc
  • RS Stock No. 174-0463
  • Mfr. Part No. RF0323-000
1 Reel of 20000
PHP433,295.55(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9554
  • Mfr. Part No. 3VA10103ED360AA0
Each
PHP29,224.48(exc. VAT)
Siemens Sentron Contactor Interface Module
  • RS Stock No. 196-3600
  • Mfr. Part No. 5SM23320
Each
PHP8,294.89(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9805
  • Mfr. Part No. 3VA1116-6GE42-0AA0
Each
PHP88,263.11(exc. VAT)
Siemens, SENTRON MCCB 3P 60A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-704
  • Mfr. Part No. 3VA5160-5EF31-0AA0
Each
PHP39,346.31(exc. VAT)
Better World
Siemens RCBO, 13A Current Rating, 3P Poles, 30mA Trip Sensitivity, Type B, Sentron Range
  • RS Stock No. 243-6204
  • Mfr. Part No. 5SU1336-6FP13
Each
PHP21,383.16(exc. VAT)
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