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
ABB, XT1H MCCB 4P 160A, Fixed Mount
  • RS Stock No. 236-7290
  • Mfr. Part No. 1SDA067462R1 XT1H 160 TMD 160A 3P+N FF
Each
PHP60,246.73(exc. VAT)
In Stock
ABB RCBO, 20A Current Rating, 4P Poles, Type C
  • RS Stock No. 237-5099
  • Mfr. Part No. 2CSR254001R1204
Each
PHP26,829.61(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 2P, 300mA Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-351
  • Mfr. Part No. 2CDS272061R0117
Each
PHP23,528.98(exc. VAT)
In Stock
Omron Busbar
  • RS Stock No. 111-3528
  • Mfr. Part No. PYDN-7.75-200R
Each
PHP424.91(exc. VAT)
Temporarily out of stock
Schneider Electric, EasyPact Circuit breaker 4P 400A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 100-834
  • Mfr. Part No. EZC400H4350N
Each
PHP109,972.96(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4529
  • Mfr. Part No. 3VA2125-6HM32-0AA0
Each
PHP75,708.59(exc. VAT)
Temporarily out of stock
Siemens SENTRON 3VA9 LCD display for use with 3VA breakers
  • RS Stock No. 218-1875
  • Mfr. Part No. 3VA9987-0TD10
Each
PHP67,805.56(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 15A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-763
  • Mfr. Part No. 3VA5195-6ED41-0AA0
Each
PHP37,278.69(exc. VAT)
Temporarily out of stock
Wickmann Fuse Block
  • RS Stock No. 174-0266
  • Mfr. Part No. 01550900M
1 Box of 1000
PHP81,972.00(exc. VAT)
In Stock
Better World
Siemens Sentron for use with 3VA Series Circuit Breaker
  • RS Stock No. 874-4540
  • Mfr. Part No. 3VA9988-0BL33
Each
PHP10,633.61(exc. VAT)
Temporarily out of stock
ABB RCBO, 32A Current Rating, 2P Poles
  • RS Stock No. 231-9883
  • Mfr. Part No. 2CSA275901R9325 S-ARC1 M B32
Each
PHP17,340.51(exc. VAT)
Temporarily out of stock
Phoenix Contact 2 Phase Surge Protector, 5kA, DIN Rail Mount
  • RS Stock No. 201-6200
  • Mfr. Part No. 2906743
Each
PHP9,770.80(exc. VAT)
In Stock
Omron Busbar
  • RS Stock No. 111-3535
  • Mfr. Part No. PYDN-7.75-030S
Each
PHP112.52(exc. VAT)
In Stock
Eaton 224A NH Fuse, NH1, 500V ac
  • RS Stock No. 181-8452
  • Mfr. Part No. 224NHG1B
1 Box of 3
PHP1,802.26(exc. VAT)
In Stock
Siemens 355A Centred Tag Fuse, NH3, 500V ac
  • RS Stock No. 203-2020
  • Mfr. Part No. 3NA3354
Each (In a Pack of 3)
PHP3,091.57(exc. VAT)
In Stock
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 288-7184
  • Mfr. Part No. C256TM250
Each
PHP46,141.33(exc. VAT)
Temporarily out of stock
Siemens 1.25kA Tag Fuse, NH2, 690V
  • RS Stock No. 608-763
  • Mfr. Part No. 3NC3243-6B
1 Pack of 3
PHP43,363.86(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON 5SL60 MCB, 1P + N, 20A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 328-546
  • Mfr. Part No. 5SL6020-7MF
Each
PHP18,061.90(exc. VAT)
Temporarily out of stock
Siemens 5SM27 RCCB, 63A, 3 Pole, 500mA, Type A, 400V
  • RS Stock No. 328-400
  • Mfr. Part No. 5SM2735-6
Each
PHP12,756.10(exc. VAT)
Temporarily out of stock
Hager CDB RCCB, 63A, 4 Pole, 30mA, Type B, 230 → 400V ac
  • RS Stock No. 597-922
  • Mfr. Part No. CDB463E
Each
PHP145,727.89(exc. VAT)
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