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

33476 Products showing for Fuses & Circuit Breakers

1670 of 999+
Eaton IZMX/INX Electronic Circuit Breaker 1.25kA , Fixed
  • RS Stock No. 132-812
  • Mfr. Part No. 183576 IZMX40B3-P12F-1
Each
PHP810,125.18(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 300A, Breaking Capacity 3 kA, Fixed Mount
  • RS Stock No. 229-411
  • Mfr. Part No. 107588 NZMH2-4-A300
Each
PHP187,895.84(exc. VAT)
Eaton 250A Centred Tag Fuse, NH1, 690V ac
  • RS Stock No. 182-1387
  • Mfr. Part No. 170M3816D
Each (In a Box of 6)
PHP13,498.823(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 874-4373
  • Mfr. Part No. 3VA2216-5HL32-0AA0
Each
PHP72,234.45(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 250A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 210-1732
  • Mfr. Part No. 3VA2225-6HL42-0AA0
Each
PHP112,478.25(exc. VAT)
Schneider Electric RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Easy9 Range
  • RS Stock No. 654-805
  • Mfr. Part No. EZ9TDA7606
Each
PHP15,418.44(exc. VAT)
Siemens SENTRON 5SY8 MCB, 2P, 4A Curve D, 230V AC, 60V DC, 50 kA Breaking Capacity
  • RS Stock No. 610-624
  • Mfr. Part No. 5SY8504-8
Each
PHP8,364.60(exc. VAT)
Schneider Electric Resi9 Resi9 XE DM MCB, 1P, 6A Curve C, 230V AC, 3000 A Breaking Capacity
  • RS Stock No. 287-6044
  • Mfr. Part No. R9EFC606
Each
PHP2,210.70(exc. VAT)
Siemens ALPHA Assembly Kit for use with In Line Fuse Switch Disconnectors
  • RS Stock No. 628-841
  • Mfr. Part No. 8GK4752-5KK35
Each
PHP23,039.34(exc. VAT)
Better World
ABB, Tmax XT MCCB 4P 32A, Fixed Mount
  • RS Stock No. 236-7444
  • Mfr. Part No. 1SDA067706R1 XT2V 160 TMD 32A FF
Each
PHP79,786.36(exc. VAT)
ABB IEC Range Busbar for use with S200C
  • RS Stock No. 250-4786
  • Mfr. Part No. 2CDL802141R1018
1 Box of 20
PHP42,093.47(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4011
  • Mfr. Part No. 3VA2110-7MQ36-0AA0
Each
PHP120,029.05(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 150A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 268-406
  • Mfr. Part No. 3VA6115-8JQ41-0AA0
Each
PHP277,115.20(exc. VAT)
Siemens SENTRON 2 Phase Busbar, 18mm Pitch
  • RS Stock No. 213-2574
  • Mfr. Part No. 5ST3707
Each
PHP7,185.60(exc. VAT)
Hager BDF Series RCCB, 63A, 4 Pole, 30mA, Type F
  • RS Stock No. 597-900
  • Mfr. Part No. BDF863
Each
PHP59,842.84(exc. VAT)
Eaton xEffect FAZ MCB, 1P, 8A Curve B, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 247-885
  • Mfr. Part No. 132739 FAZ-B8/1-RT
Each
PHP2,587.87(exc. VAT)
Schneider Electric, ComPacT New generation MCCB 4P 125A, Breaking Capacity 1500 V, Fixed Mount
  • RS Stock No. 205-316
  • Mfr. Part No. C25F4TM125D3
Each
PHP222,283.46(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-486
  • Mfr. Part No. 3VA6580-5HN36-0AA0
Each
PHP376,084.92(exc. VAT)
Siemens SENTRON 3 Phase Busbar Connector, 400V
  • RS Stock No. 152-510
  • Mfr. Part No. 5ST3725-3
Each
PHP2,321.31(exc. VAT)
Littelfuse PC Board Non Resettable Fuse, Axial 2A, 125V ac/dc
  • RS Stock No. 541-3287P
  • Mfr. Part No. 251002.NRT1L
Each (Supplied in a Bag)
PHP64.754(exc. VAT)
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