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

255 of 999+
Temporarily out of stock
20A NH Fuse, 51 x 21 x 79mm, 400V ac
  • RS Stock No. 252-912
  • Mfr. Part No. 20NHG000B-400
1 Pack of 3
PHP968.80(exc. VAT)
Temporarily out of stock
Eaton 125A NH Fuse, 63 x 40 x 135mm, 500V ac
  • RS Stock No. 246-292
  • Mfr. Part No. 125NHM1B
1 Pack of 3
PHP4,081.21(exc. VAT)
Temporarily out of stock
Siemens 16A NH Fuse, NH1, 440 - 500V ac/dc
  • RS Stock No. 269-8311
  • Mfr. Part No. 3NA7105
Each (In a Pack of 3)
PHP986.827(exc. VAT)
Temporarily out of stock
ABB S800U MCB, 3P, 30A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-248
  • Mfr. Part No. 2CCS863017R0527
Each
PHP26,744.24(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 80A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 147-570
  • Mfr. Part No. 3VA5180-6EC31-1AA0
Each
PHP36,978.60(exc. VAT)
Temporarily out of stock
ABB Tmax XT Flexible Bar for use with XT3
  • RS Stock No. 237-6182
  • Mfr. Part No. 1SDA066967R1 FB XT3 6PCS
Each
PHP3,629.01(exc. VAT)
Temporarily out of stock
ABB S803S MCB, 3P, 80A, UC-B, 750V DC, 50 kA Breaking Capacity
  • RS Stock No. 140-768
  • Mfr. Part No. 2CCS863001R1805
Each
PHP33,475.94(exc. VAT)
Temporarily out of stock
ABB S302 MCB, 2P, 500mA Curve C, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-306
  • Mfr. Part No. 2CDS382001R0984
Each
PHP19,798.44(exc. VAT)
Limited stock
Siemens 80A Centred Tag Fuse, NH0, 1000V ac
  • RS Stock No. 395-610
  • Mfr. Part No. 3NE4120
Each (In a Pack of 3)
PHP5,867.027(exc. VAT)
In Stock
Bourns Thermal Fuse +72°C 60 A, 28V
  • RS Stock No. 258-6349
  • Mfr. Part No. AC72ABD
Each (In a Bag of 1000)
PHP65.754(exc. VAT)
In Stock
ABB HPMCB - High Performance MCB Padlock Lever Lock for use with S800B, S800C, S800HV, S800N, S800PV, S800S, S800U
  • RS Stock No. 232-0315
  • Mfr. Part No. 2CCS800900R0051 S800-PLL
Each
PHP2,745.54(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 1P, 63A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-034
  • Mfr. Part No. 2CCS861001R0597
Each
PHP8,890.79(exc. VAT)
In Stock
ABB 200A Centred Tag Fuse, NH1, 500V
  • RS Stock No. 779-9996
  • Mfr. Part No. OFAF1H200 1SCA022627R4490
Each
PHP991.08(exc. VAT)
Temporarily out of stock
ABB 25A Tag Fuse, 79 x 21 x 53mm, 500V
  • RS Stock No. 251-3429
  • Mfr. Part No. 1SCA022627R0820
1 Box of 9
PHP3,436.64(exc. VAT)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 80A, Fixed
  • RS Stock No. 122-511
  • Mfr. Part No. LV510566
Each
PHP14,470.69(exc. VAT)
Temporarily out of stock
Europa 3 Phase Distribution Board, 36 Way, 125 A
  • RS Stock No. 849-6421
  • Mfr. Part No. TPN12
Each
PHP32,740.49(exc. VAT)
In Stock
Siemens 35A D02 Neozed Fuse, gR, 400V
  • RS Stock No. 202-7155
  • Mfr. Part No. 5SE1335
Each (In a Pack of 10)
PHP1,809.432(exc. VAT)
Temporarily out of stock
Eaton RCCB, 80A, 2 Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 227-0757
  • Mfr. Part No. 114102 PFGM-80/2/003/-
Each
PHP22,486.01(exc. VAT)
In Stock
Schneider Electric RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-447
  • Mfr. Part No. A9D07220
Each
PHP44,732.97(exc. VAT)
In Stock
Europa EUR1 RCCB, 80A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 210-4760
  • Mfr. Part No. EUR180.30/2A
Each
PHP3,313.05(exc. VAT)
1
255
1676
Results per page

Related links