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

33502 Products showing for Fuses & Circuit Breakers

166 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 20A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-237
  • Mfr. Part No. 3VA5120-6EC41-0AA0
Each
PHP41,479.15(exc. VAT)
In Stock
MECATRACTION Earth Clamp
  • RS Stock No. 284-6377
  • Mfr. Part No. C6RG2-50
1 Box of 6
PHP3,051.69(exc. VAT)
Stock information currently inaccessible
Bourns 125A Tag Fuse, 66mm, 800V ac/dc, 24.1mm
  • RS Stock No. 254-4136
  • Mfr. Part No. PF-FB2-125
Each
PHP6,830.46(exc. VAT)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 320A, Fixed
  • RS Stock No. 122-447
  • Mfr. Part No. LV540345
Each
PHP52,054.19(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 320A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 231-401
  • Mfr. Part No. 113532 NZMN3-4-A320-AVE
Each
PHP245,005.03(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 6 kA, Withdrawable
  • RS Stock No. 248-998
  • Mfr. Part No. 191530 NZMS3-4-AX400/VAR-AVE
Each
PHP282,027.03(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 40A Current Rating, 1P Poles, Type C, Acti9 Range
  • RS Stock No. 245-139
  • Mfr. Part No. A9D05840
Each
PHP13,479.87(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 100A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 347-088
  • Mfr. Part No. C10N47E100
Each
PHP333,698.75(exc. VAT)
Temporarily out of stock
Siemens SENTRON 3 Phase Busbar
  • RS Stock No. 226-0808
  • Mfr. Part No. 5SH5320
Each
PHP11,888.05(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 100A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 654-127
  • Mfr. Part No. C11F44V100L
Each
PHP120,326.33(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT Circuit breaker 4P 100A, Breaking Capacity 36 KA, Fixed Mount
  • RS Stock No. 119-596
  • Mfr. Part No. C11F44V100B
Each
PHP111,267.86(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 4P 16A, Breaking Capacity 70 kA, Clip-On
  • RS Stock No. 178-7787
  • Mfr. Part No. LV426520
Each
PHP41,716.91(exc. VAT)
In Stock
Legrand DX3 RCD, 10A, 1+N Pole, 30mA
  • RS Stock No. 731-9831
  • Mfr. Part No. 4 107 12
Each
PHP22,971.47(exc. VAT)
Temporarily out of stock
Better World
ABB, XT2N MCCB 4P 50A, Fixed Mount
  • RS Stock No. 236-7464
  • Mfr. Part No. 1SDA067732R1 XT2N 160 TMG 50A FF
Each
PHP33,653.16(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 160A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 429-402
  • Mfr. Part No. C16N6TM160
Each
PHP145,138.72(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 160A, Fixed Mount
  • RS Stock No. 254-6330
  • Mfr. Part No. C12F3TM160L
Each
PHP65,214.35(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 16A, Breaking Capacity 25 kA, Panel Mount
  • RS Stock No. 654-699
  • Mfr. Part No. IL0163P25
Each
PHP25,557.35(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 16A, Fixed Mount
  • RS Stock No. 254-6295
  • Mfr. Part No. C10N3TM016
Each
PHP49,372.61(exc. VAT)
Limited stock
Limitor Thermal Fuse +121°C 10 A/15 A, 250V ac
  • RS Stock No. 797-6042
  • Mfr. Part No. SF 119 R
Each (In a Pack of 10)
PHP56.987(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 125A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 654-621
  • Mfr. Part No. C12B6TM125L
Each
PHP60,115.75(exc. VAT)
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