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

278 of 999+
Temporarily out of stock
Eaton 2 Phase Industrial Surge Protection, 10kA, 480V ac, Flange Mount Mount
  • RS Stock No. 236-5200
  • Mfr. Part No. LS10N-480V-S
Each (In a Box of 5)
PHP2,604.496(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 1P, 10A Curve C, 230V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 202-876
  • Mfr. Part No. 2CDS271061R0104
Each
PHP7,415.89(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 45A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-647
  • Mfr. Part No. 3VA5145-6EC31-0AA0
Each
PHP32,102.70(exc. VAT)
Temporarily out of stock
ABB 50A Tag Fuse, 135 x 30 x 65mm, 500V
  • RS Stock No. 250-4422
  • Mfr. Part No. 1SCA022697R6920
1 Box of 3
PHP4,884.43(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 25A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-303
  • Mfr. Part No. 3VA5125-4ED21-1AA0
Each
PHP32,537.83(exc. VAT)
In Stock
ABB Surge Protector, 1.5kV, DIN Rail Mount
  • RS Stock No. 289-1631
  • Mfr. Part No. 2CTB803872R1100
Each
PHP10,085.87(exc. VAT)
Temporarily out of stock
Mersen 80A Bolted Tag Fuse, A4, 460 V dc, 690V ac, 94mm
  • RS Stock No. 178-1125
  • Mfr. Part No. S1006611 / BTCP69V80
Each (In a Pack of 10)
PHP1,680.134(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 210-1741
  • Mfr. Part No. 3VA2440-6HL42-0AA0
Each
PHP189,355.52(exc. VAT)
Temporarily out of stock
Phoenix Contact Circuit Breaker - VARIOFACE 250V ac/dc Voltage Rating DIN Rail, 32A Current Rating
  • RS Stock No. 129-765
  • Mfr. Part No. 2302382
Each
PHP7,535.62(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 800A IZMX/INX, 3 channels , Withdrawable
  • RS Stock No. 132-827
  • Mfr. Part No. 183587 IZMX40B3-P08W-1
Each
PHP751,460.14(exc. VAT)
Temporarily out of stock
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 3 kA, Fixed Mount
  • RS Stock No. 252-479
  • Mfr. Part No. 193360 NZMN2-4-AX160
Each
PHP89,515.64(exc. VAT)
In Stock
Rockwell Automation FB100 Busbar, 1000V
  • RS Stock No. 282-2332
  • Mfr. Part No. FB100224Q1
Each (In a Pack of 4)
PHP2,468.57(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 210-1716
  • Mfr. Part No. 3VA2110-6HL36-0AA0
Each
PHP63,872.86(exc. VAT)
In Stock
Schneider Electric Acti9 A9F MCB, 1P, 50A Curve C, 240V AC, 72V DC, 15 kA Breaking Capacity
  • RS Stock No. 288-7097
  • Mfr. Part No. A9F94150
Each
PHP12,325.08(exc. VAT)
Temporarily out of stock
ABB RCBO, 25A Current Rating, 2P Poles, 30mA Trip Sensitivity
  • RS Stock No. 231-9938
  • Mfr. Part No. 2CSR255151R1255 DSE201 B25 A30
Each
PHP5,663.09(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 160A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-760
  • Mfr. Part No. IL1603P36
Each
PHP68,228.62(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 45A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-645
  • Mfr. Part No. 3VA5145-5ED31-1AA0
Each
PHP26,927.98(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 231-141
  • Mfr. Part No. 113346 NZMH2-S160-SVE
Each
PHP94,937.62(exc. VAT)
Temporarily out of stock
Hager BFF RCCB, 63A, 4 Pole, 300mA, Type F
  • RS Stock No. 602-070
  • Mfr. Part No. BFF863
Each
PHP47,268.15(exc. VAT)
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with 3VA1 Molded Case Circuit Breakers
  • RS Stock No. 629-295
  • Mfr. Part No. 8GK4733-4KK22
Each
PHP17,683.06(exc. VAT)
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