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

1635 of 999+
Better World
Siemens, SENTRON MCCB 1P 50A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9360
  • Mfr. Part No. 3VA1150-5ED12-0AA0
Each
PHP12,266.93(exc. VAT)
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-695
  • Mfr. Part No. 3VA6560-5KT46-0AA0
Each
PHP488,983.70(exc. VAT)
Eaton RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, Type B, FRBmM Range
  • RS Stock No. 123-697
  • Mfr. Part No. 170881 FRBMM-B16/2/003-A
Each
PHP9,113.38(exc. VAT)
Better World
Siemens RCBO, 25A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Sentron Range
  • RS Stock No. 243-6176
  • Mfr. Part No. 5SU1324-7FR25
Each
PHP19,117.87(exc. VAT)
Eaton Eaton Distribution Parts Neutral Phase Busbar Connector
  • RS Stock No. 254-504
  • Mfr. Part No. 263947 ZV-N-05TE-10
1 Pack of 10
PHP802.62(exc. VAT)
Schneider Electric EasyPact Electronic Circuit Breaker 40A, Fixed
  • RS Stock No. 122-377
  • Mfr. Part No. LV510513
Each
PHP11,090.28(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 125A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-255
  • Mfr. Part No. 3VA5112-5ED11-1AA0
Each
PHP29,477.95(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9658
  • Mfr. Part No. 3VA11104FD460AA0
Each
PHP39,043.28(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - IELK1 Single Pole Panel Mount, 10A Current Rating
  • RS Stock No. 275-0263
  • Mfr. Part No. IELK1-1-61-10.0-AC-01-V
1 Box of 5
PHP21,039.48(exc. VAT)
HENSEL ENYSTAR Distribution Board, 6 Way, 63 A
  • RS Stock No. 117-348
  • Mfr. Part No. FP VN 0600 GB
Each
PHP59,423.77(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA
  • RS Stock No. 209-7038
  • Mfr. Part No. 3VA2010-6HN46-0AA0
Each
PHP70,717.01(exc. VAT)
ALPHA 630 DIN, Abdeckung Höhe=150mm, Bre
  • RS Stock No. 229-9876
  • Mfr. Part No. 8GK9601-1KK11
Each (In a Pack of 10)
PHP1,731.988(exc. VAT)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-775
  • Mfr. Part No. 3VA6140-7KQ41-0AA0
Each
PHP202,338.08(exc. VAT)
Siemens 8GB Door for use with Plug-in terminal
  • RS Stock No. 211-6104
  • Mfr. Part No. 8GB5036-4KM
Each
PHP5,194.95(exc. VAT)
Eaton 1.1A Resettable Fuse, 6V
  • RS Stock No. 225-8233
  • Mfr. Part No. PTSLR08056V110
Each (In a Pack of 10)
PHP35.378(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 25A, Fixed Mount
  • RS Stock No. 260-7492
  • Mfr. Part No. C10W36M025
Each
PHP187,020.78(exc. VAT)
Lovato 4 Phase Surge Protector, 50kA
  • RS Stock No. 216-8307
  • Mfr. Part No. SG24PA300R
Each
PHP31,779.48(exc. VAT)
Better World
Siemens SENTRON Wire Connector for use with 3VA5
  • RS Stock No. 269-7096
  • Mfr. Part No. 3VA9134-0JB10
Each (In a Pack of 4)
PHP436.063(exc. VAT)
Siemens SENTRON 3VA9 Wire Connector for use with 3VA1 160
  • RS Stock No. 218-1794
  • Mfr. Part No. 3VA9114-0QE00
Each
PHP6,519.15(exc. VAT)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-405
  • Mfr. Part No. 3VA6140-8KM31-2AA0
Each
PHP202,338.08(exc. VAT)
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