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

312 of 999+
In Stock
Legrand RCCB, 63A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 266-1363
  • Mfr. Part No. 411651
Each
PHP18,489.90(exc. VAT)
Temporarily out of stock
ABB S301 MCB, 1P, 50A Curve B, 415V AC, 125V DC, 25 kA Breaking Capacity
  • RS Stock No. 201-300
  • Mfr. Part No. 2CDS381001R0505
Each
PHP13,058.55(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 5m, 630A, KS Series
  • RS Stock No. 219-8925
  • Mfr. Part No. KSA630ED45010
Each
PHP346,339.80(exc. VAT)
In Stock
Littelfuse 0.05A Resettable Fuse, 60V
  • RS Stock No. 517-6556
  • Mfr. Part No. RXEF005
Each (In a Pack of 10)
PHP17.562(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 55 kA
  • RS Stock No. 209-6850
  • Mfr. Part No. 3VA1163-5EE46-0AA0
Each
PHP46,742.18(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 268-421
  • Mfr. Part No. 3VA6140-5HN41-2AA0
Each
PHP88,706.19(exc. VAT)
Temporarily out of stock
Siemens SENTRON Withdrawable Unit for use with Circuit Breaker
  • RS Stock No. 157-797
  • Mfr. Part No. 3VA9443-0KD00
Each
PHP124,628.53(exc. VAT)
In Stock
Eaton 160A British Standard Fuse, B2, 415V, 133mm
  • RS Stock No. 181-8522
  • Mfr. Part No. EFS160
Each
PHP1,637.18(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-424
  • Mfr. Part No. 3VA6440-6KL31-2AA0
Each
PHP474,323.22(exc. VAT)
In Stock
Better World
Schneider Electric iID RCCB, 63A, 4 Pole, 300mA, Type B-SI, 400V ac
  • RS Stock No. 248-3725
  • Mfr. Part No. A9Z64463
Each
PHP130,182.72(exc. VAT)
Temporarily out of stock
Legrand DX3 RCD, 6A, 1+N Pole, 30mA
  • RS Stock No. 731-9878
  • Mfr. Part No. 4 107 99
Each
PHP31,887.09(exc. VAT)
In Stock
Littelfuse 0.75A Resettable Fuse, 60V dc
  • RS Stock No. 895-1647P
  • Mfr. Part No. 2920L075/60MR
Each (Supplied on a Reel)
PHP34.056(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 20A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 248-634
  • Mfr. Part No. 102271 FAZ-D20/3-NA
Each
PHP16,055.09(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 Acti9 Reflex MCB, 2P, 16A Curve B, 230V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 340-852
  • Mfr. Part No. A9C63216
Each
PHP23,679.42(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 2P 40A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 346-754
  • Mfr. Part No. C10F2TM040
Each
PHP46,492.31(exc. VAT)
Temporarily out of stock
Siemens 4A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 210-6938
  • Mfr. Part No. 3NA7804-6
Each (In a Pack of 3)
PHP3,434.657(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 45A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 229-597
  • Mfr. Part No. 107637 NZMN2-AF45-BT-NA
Each
PHP48,238.57(exc. VAT)
In Stock
ABB RCBO, 32A Current Rating, 3P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 767-4425
  • Mfr. Part No. 2CSR273001R1324 DS203 M AC-C32/0,03
Each
PHP18,989.65(exc. VAT)
In Stock
Lovato 1 Phase Busbar, 18mm Pitch
  • RS Stock No. 825-6125
  • Mfr. Part No. P1X9033
Each
PHP5,778.40(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 15A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-766
  • Mfr. Part No. 3VA5195-6EF41-0AA0
Each
PHP58,441.44(exc. VAT)
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