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

72 of 999+
In Stock
Eaton, xEnergy MCCB 3P 63A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 454-8118
  • Mfr. Part No. 259083 NZMN1-A63
Each
PHP35,951.14(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 50A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 874-4317
  • Mfr. Part No. 3VA1150-4EE36-0AA0
Each
PHP23,921.20(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 250mA, 250V ac
  • RS Stock No. 173-9755
  • Mfr. Part No. 0034.6609
Each (In a Bag of 100)
PHP22.854(exc. VAT)
In Stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 16A, Fixed Mount
  • RS Stock No. 254-6285
  • Mfr. Part No. C10F3TM016
Each
PHP39,125.75(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 2kA IZMX/INX, 3 channels , Withdrawable
  • RS Stock No. 132-875
  • Mfr. Part No. 183746 IZMX40H3-V20W-1
Each
PHP1,023,267.58(exc. VAT)
In Stock
Better World
Schneider Electric Compact Changeover Contact for use with Compact Nsx100 To Nsx630
  • RS Stock No. 221-1205
  • Mfr. Part No. LV429346
Each
PHP12,007.67(exc. VAT)
Temporarily out of stock
Eaton 40A NH Fuse, NH000, 690V ac
  • RS Stock No. 181-8628
  • Mfr. Part No. 40NHM000B-690
Each
PHP724.58(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 3P, 3A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 201-208
  • Mfr. Part No. 2CDS273061R0034
Each
PHP32,883.95(exc. VAT)
In Stock
Eaton Panel Mount Fuse Clip for 6.35 x 55.7mm Fuse Clip Fuse
  • RS Stock No. 182-1488
  • Mfr. Part No. TI600
Each
PHP3,079.37(exc. VAT)
In Stock
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 3P, 50A Curve D, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 339-678
  • Mfr. Part No. SE10D350
Each
PHP10,252.38(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS Stock No. 260-8119
  • Mfr. Part No. C40L3
Each
PHP166,377.28(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, NSX Range MCCB 4P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 849-4260
  • Mfr. Part No. LV430642
Each
PHP48,841.94(exc. VAT)
In Stock
RS PRO Single Phase Industrial Surge Protector, 50kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 101-739
Each
PHP6,268.53(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 400A, Fixed Mount
  • RS Stock No. 260-8128
  • Mfr. Part No. C40N4
Each
PHP203,607.05(exc. VAT)
Temporarily out of stock
Schneider Electric Earthing Strap Copper 2 → 8mm Diameter, 6 → 16mm² Wire Range
  • RS Stock No. 589-987
  • Mfr. Part No. NSYRBL21686M
Each (In a Pack of 10)
PHP444.889(exc. VAT)
Temporarily out of stock
HENSEL 1, 3 Phase Distribution Board, 3 Way, 63 A
  • RS Stock No. 183-2854
  • Mfr. Part No. KV7103
Each
PHP3,934.86(exc. VAT)
Temporarily out of stock
SIBA 80A NH Fuse, NH00, 690V
  • RS Stock No. 893-8556
  • Mfr. Part No. 20-209-08/80A
Each (In a Pack of 3)
PHP1,214.16(exc. VAT)
Temporarily out of stock
Eaton NZMH3 Electronic Circuit Breaker 320A NZM, 3 channels , Fixed
  • RS Stock No. 120-645
  • Mfr. Part No. 168913 NZMH3-A320-SVE
Each
PHP195,856.45(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 630A 3VA2, 4 channels
  • RS Stock No. 156-643
  • Mfr. Part No. 3VA2463-8HM42-0AA0
Each
PHP396,927.48(exc. VAT)
Temporarily out of stock
ABB SACE Emax 2 Fixed Part for use with Circuit Breaker
  • RS Stock No. 231-9313
  • Mfr. Part No. 1SDA073907R1 E1.2 W FP Iu=1600 3p HR
Each
PHP210,786.89(exc. VAT)
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