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

134 of 999+
In Stock
Schneider Electric A9R3 RCCB, 63A, 4 Pole, 30mA, Type A-SI, 415V ac
  • RS Stock No. 276-8740
  • Mfr. Part No. A9R31463
Each
PHP33,918.14(exc. VAT)
In Stock
Schneider Electric Resi9 Resi9 XP DM MCB, 1+N, 32A Curve D, 230V AC, 3000 A Breaking Capacity
  • RS Stock No. 287-6096
  • Mfr. Part No. R9PFD632
Each
PHP3,071.06(exc. VAT)
Temporarily out of stock
Siemens SENTRON Cover for use with 3VA1 400/630 and 3VA2 400/630
  • RS Stock No. 210-9378
  • Mfr. Part No. 3VA9354-0KB04
Each
PHP4,609.33(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3763
  • Mfr. Part No. 3VA2040-7HL42-0AA0
Each
PHP58,553.43(exc. VAT)
Temporarily out of stock
Legrand 230V (Volts) Auto Recloser Circuit Trip for use with RCBO, RCCB
  • RS Stock No. 266-1299
  • Mfr. Part No. 406288
Each
PHP28,520.53(exc. VAT)
In Stock
Eaton 63A British Standard Fuse, FE, 690 V ac, 500V dc, 63.5mm
  • RS Stock No. 156-8973
  • Mfr. Part No. 63FE
Each
PHP4,969.40(exc. VAT)
Temporarily out of stock
Siemens 350A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 210-6960
  • Mfr. Part No. 3NE1331-2
Each (In a Pack of 3)
PHP25,406.913(exc. VAT)
In Stock
RS PRO 3 Phase Industrial Surge Protector, 140kA, 2.5kV, DIN Rail Mount
  • RS Stock No. 101-770
Each
PHP56,416.79(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric RCBO, 32A Current Rating, 3P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3277
  • Mfr. Part No. A9DB3732
Each
PHP49,016.46(exc. VAT)
Temporarily out of stock
Siemens 200A Tag Fuse, 149 x 72 x 62mm, 400V
  • RS Stock No. 269-7032
  • Mfr. Part No. 3NA3240-4KK04
Each
PHP16,061.84(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 A9V6 MCB, 3P, 25A, Type A-SI, 400-415V AC
  • RS Stock No. 212-176
  • Mfr. Part No. A9V61325
Each
PHP23,876.09(exc. VAT)
Temporarily out of stock
Schneider Electric ID K Residual Current Circuit Breaker, 40A, 2P Pole, 30mA, Type AC, 220 → 240V ac
  • RS Stock No. 588-933
  • Mfr. Part No. A9KR13240S
Each
PHP1,714.37(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 63mA, 250V ac
  • RS Stock No. 284-5209
  • Mfr. Part No. 0034.6603
Each (In a Pack of 10)
PHP64.36(exc. VAT)
Temporarily out of stock
Eaton Fuse Holder Fuse Holder
  • RS Stock No. 261-374
  • Mfr. Part No. SD2-D
1 Pack of 3
PHP6,324.73(exc. VAT)
Temporarily out of stock
ABB Emax 2, Tmax XT Power Supply Module for use with Circuit Breaker
  • RS Stock No. 231-9322
  • Mfr. Part No. 1SDA074172R1
Each
PHP19,842.44(exc. VAT)
Temporarily out of stock
Siemens SENTRON Long Rear Connector for use with 3VA12
  • RS Stock No. 161-424
  • Mfr. Part No. 3VA9211-0QE20
Each
PHP2,478.59(exc. VAT)
Temporarily out of stock
Mersen 20A Offset Tag Fuse, F1, 250 V dc, 550V ac
  • RS Stock No. 178-1011
  • Mfr. Part No. X1019219 / BNS55V20M32
Each (In a Pack of 10)
PHP150.821(exc. VAT)
In Stock
RS PRO Non Resettable Fuse 3.5A, 250V ac
  • RS Stock No. 139-960
1 Bag of 10
PHP936.99(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 2P, 10A Curve C, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-614
  • Mfr. Part No. 2CCS862001R0104
Each
PHP11,930.49(exc. VAT)
In Stock
Eaton PC Board Non Resettable Fuse, Radial 1.25A, 250V ac
  • RS Stock No. 769-3378
  • Mfr. Part No. SS-5F-1-25A-BK
Each (In a Pack of 5)
PHP79.166(exc. VAT)
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