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

198 of 999+
Temporarily out of stock
Siemens SENTRON Adapter
  • RS Stock No. 277-0878
  • Mfr. Part No. 3WA9111-0BB25
Each
PHP5,858.19(exc. VAT)
Temporarily out of stock
Eaton PC Board Non Resettable Fuse, Radial 4A, 300V ac
  • RS Stock No. 769-3315
  • Mfr. Part No. SR-5H-4A-BK
Each (In a Pack of 5)
PHP60.242(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4764
  • Mfr. Part No. 3VA2163-7MN32-0AA0
Each
PHP58,138.32(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 55 kA
  • RS Stock No. 209-6926
  • Mfr. Part No. 3VA2140-5KP42-0AA0
Each
PHP102,150.98(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3761
  • Mfr. Part No. 3VA2025-5KP46-0AA0
Each
PHP103,488.97(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 320A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9784
  • Mfr. Part No. LV540315
Each
PHP86,675.32(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5135
  • Mfr. Part No. 3VA2116-6HL46-0AA0
Each
PHP105,119.90(exc. VAT)
In Stock
Better World
Schneider Electric iID RCCB, 40A, 4 Pole, 30mA
  • RS Stock No. 734-9359
  • Mfr. Part No. A9R11440
Each
PHP20,350.89(exc. VAT)
Currently unavailable
ABB Plastic Consumer Unit, IP65 1SLM006500A
  • RS Stock No. 286-4988
  • Mfr. Part No. 1SLM006500A3116
Each
PHP10,111.78(exc. VAT)
In Stock
Mersen 32A Bolted Tag Fuse, A3, 460 V dc, 690V ac, 73mm
  • RS Stock No. 178-1115
  • Mfr. Part No. E1006599 / BTIS69V32M50
Each (In a Pack of 10)
PHP1,128.553(exc. VAT)
Temporarily out of stock
Schneider Electric TransferPacT Extension Terminal for use with Circuit Breaker
  • RS Stock No. 276-2391
  • Mfr. Part No. TPSCON36
Each
PHP9,695.87(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 9 kA, Plug In
  • RS Stock No. 231-657
  • Mfr. Part No. 110852 NZMH3-VE250-AVE
Each
PHP260,400.32(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 K60H MCB Mini Circuit Breaker, 1P, 32A Curve C, 400V AC, 10000 A Breaking Capacity
  • RS Stock No. 588-890
  • Mfr. Part No. A9K12132
Each
PHP395.29(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 249-020
  • Mfr. Part No. 191616 NZMN3-4-VX400/VAR-AVE
Each
PHP266,851.68(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 209-4892
  • Mfr. Part No. 3VA1112-4GF46-0AA0
Each
PHP62,005.62(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 80A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-582
  • Mfr. Part No. 3VA5180-6EF31-0AA0
Each
PHP49,739.48(exc. VAT)
Temporarily out of stock
Siemens 80A Centred Tag Fuse, NH1, 1kV
  • RS Stock No. 230-2983
  • Mfr. Part No. 3NE1220-4
Each (In a Pack of 2)
PHP10,162.90(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4350 MCB, 3P, 50A Curve C, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 300-084
  • Mfr. Part No. 5SJ4350-7HG41
Each
PHP40,296.86(exc. VAT)
Temporarily out of stock
Mersen 32A NH Fuse, NH000, 500V ac
  • RS Stock No. 375-9553
  • Mfr. Part No. Z211438C
Each (In a Pack of 3)
PHP586.167(exc. VAT)
Temporarily out of stock
Eaton RCBO, 25A Current Rating, 2P Poles, 100mA Trip Sensitivity, Type A, Type C, FRBmM Range
  • RS Stock No. 123-335
  • Mfr. Part No. 170824 FRBMM-C25/2/01-A
Each
PHP11,523.28(exc. VAT)
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