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

82 of 999+
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELHK111 3 Pole Panel Mount, 50A Current Rating
  • RS Stock No. 275-0240
  • Mfr. Part No. IELHK111-1-61F-50.0-A-01-V
1 Box of 5
PHP75,412.26(exc. VAT)
In Stock
Mersen 125A NH Fuse, NH000, 690V ac
  • RS Stock No. 448-3336
  • Mfr. Part No. X320065
Each
PHP2,812.55(exc. VAT)
Temporarily out of stock
Eaton IZMX40H3-P40F-1 Electronic Circuit Breaker 4kA , Fixed
  • RS Stock No. 132-825
  • Mfr. Part No. 183586 IZMX40H3-P40F-1
Each
PHP2,326,113.62(exc. VAT)
In Stock
Mersen 20A British Standard Fuse, 17 x 49mm, 690V, 61 → 65.5mm
  • RS Stock No. 238-3953
  • Mfr. Part No. Y220959
Each
PHP3,564.86(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 7A Curve B, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 247-881
  • Mfr. Part No. 132719 FAZ-B7/3-NA
Each
PHP12,096.30(exc. VAT)
In Stock
Eaton 400A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 182-1765
  • Mfr. Part No. 170M5808D
Each
PHP29,732.85(exc. VAT)
Temporarily out of stock
ABB S802S MCB, 2P, 100A, UC-K, 500V DC, 50 kA Breaking Capacity
  • RS Stock No. 141-201
  • Mfr. Part No. 2CCS862001R1637
Each
PHP26,459.87(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 16A Curve C, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 231-940
  • Mfr. Part No. 113762 FAZ-C16/1-NA-DC
1 Pack of 2
PHP12,595.24(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 4P, 8A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 202-999
  • Mfr. Part No. 2CDS274061R0407
Each
PHP55,399.42(exc. VAT)
In Stock
ABB RCBO, 16A Current Rating, 2P Poles, Type AC
  • RS Stock No. 231-9948
  • Mfr. Part No. 2CSR255170R1164 DSH201 C16 A30
1 Box of 1
PHP4,705.32(exc. VAT)
In Stock
Schneider Electric Resi9 R9F2 MCB, 3P, 32A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 212-088
  • Mfr. Part No. R9F28332
Each
PHP15,054.82(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 250 Circuit Breakers
  • RS Stock No. 212-359
  • Mfr. Part No. C2547A250
Each
PHP282,401.64(exc. VAT)
In Stock
ABB, Tmax MCCB 4P 500A, Breaking Capacity 40 kA, Fixed Mount
  • RS Stock No. 237-5971
  • Mfr. Part No. 1SDA054533R1 T5V630 FF TMA 500A V
Each
PHP238,553.52(exc. VAT)
In Stock
Better World
Schneider Electric iC60 RCD, 25A, 1+N Pole, 10mA
  • RS Stock No. 776-8722
  • Mfr. Part No. A9V10225
Each
PHP17,428.83(exc. VAT)
In Stock
Better World
Schneider Electric, Power Tag, 2mA, POWERTAG, 3W, Wired
  • RS Stock No. 248-3710
  • Mfr. Part No. A9XMC2D3
Each
PHP10,298.76(exc. VAT)
In Stock
Eaton 20A Bolt In Mount 6.3 x 32mm Fuse Block, 300V ac/dc
  • RS Stock No. 852-7225
  • Mfr. Part No. S-8201-1-R
Each
PHP140.39(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 175A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 229-521
  • Mfr. Part No. 113007 NZMN2-4-AF175-BT-NA
Each
PHP159,964.38(exc. VAT)
Temporarily out of stock
RS PRO 5A Tan Blade Car Fuse, 32V dc
  • RS Stock No. 177-8010
1 Bag of 1000
PHP11,573.36(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4306 MCB, 3P, 6A Curve D, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 299-778
  • Mfr. Part No. 5SJ4306-8HG41
Each
PHP19,500.70(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IUGN66 2 Pole Panel Mount, 10A Current Rating
  • RS Stock No. 275-0291
  • Mfr. Part No. IUGN66-1-72-10.0
Each
PHP8,729.15(exc. VAT)
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