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

265 of 999+
In Stock
Eaton 125A British Standard Fuse, A4, 415V ac, 94mm
  • RS Stock No. 139-956
  • Mfr. Part No. DEO125
Each
PHP1,851.16(exc. VAT)
Temporarily out of stock
Eaton xEffect - FBSmV RCCB, 40A, 4 Pole, 300mA, Type A, 240/415V ac
  • RS Stock No. 123-540
  • Mfr. Part No. 170231 FBSMV-40/4/03-A
Each
PHP8,037.79(exc. VAT)
In Stock
Contactum RCBO, 32A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type B, CCPBR Range
  • RS Stock No. 240-6388
  • Mfr. Part No. CCPBR0632AB
Each
PHP2,059.94(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 4P 400A, Fixed Mount
  • RS Stock No. 250-4198
  • Mfr. Part No. 1SDA054484R1
Each
PHP322,993.65(exc. VAT)
In Stock
Eaton RCCB, 40A, 1+N Pole, 100mA, Type AC
  • RS Stock No. 667-0611
  • Mfr. Part No. 235395 PFIM-40/2/01-MW
Each
PHP10,325.94(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iIG40K RCCB, 40A, 1+N Pole, 30mA, Type AC, 220 → 240V ac
  • RS Stock No. 238-3469
  • Mfr. Part No. A9R69640
Each
PHP10,847.89(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Acti9 iIG40 RCCB, 25A, 1+N Pole, 30mA, 220 → 240V ac
  • RS Stock No. 191-6129
  • Mfr. Part No. A9R87625
Each
PHP20,003.81(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 1 Phase Busbar, 250 V, 440 V, 9mm Pitch
  • RS Stock No. 238-4080
  • Mfr. Part No. A9XPK707
Each
PHP22,660.52(exc. VAT)
Temporarily out of stock
ABB Tmax XT Connection Kit for use with Tmax XT
  • RS Stock No. 237-6190
  • Mfr. Part No. 1SDA066981R1 VAUX 24VDC XT2-XT4 W
Each
PHP6,853.64(exc. VAT)
In Stock
Siemens SENTRON 5SY4 MCB, 3P, 1A Curve B, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-572
  • Mfr. Part No. 5SY4301-6
Each
PHP7,249.32(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iIG40 RCCB, 40A, 1+N Pole, 30mA, 220 → 240V ac
  • RS Stock No. 191-6130
  • Mfr. Part No. A9R87640
Each
PHP21,017.24(exc. VAT)
In Stock
ABB 800A Solid Link for NH Fuses
  • RS Stock No. 251-3303
  • Mfr. Part No. 1SCA022003R9920
Each
PHP4,093.04(exc. VAT)
In Stock
Littelfuse 50A Red BF1 Car Fuse, 32V dc
  • RS Stock No. 431-6703
  • Mfr. Part No. 153.5631.5501
Each (In a Pack of 5)
PHP286.088(exc. VAT)
Temporarily out of stock
200A NH Fuse, 71 x 54 x 150mm, 690V ac
  • RS Stock No. 252-890
  • Mfr. Part No. 200NHG2B-690 NH FUSE 200A 690V gG SIZE 2
1 Pack of 3
PHP3,922.37(exc. VAT)
Temporarily out of stock
Siemens 355A Centred Tag Fuse, NH2, 400V
  • RS Stock No. 230-2958
  • Mfr. Part No. 3NA6254-4
Each (In a Pack of 3)
PHP3,637.113(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 60A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-686
  • Mfr. Part No. 3VA5160-4ED41-0AA0
Each
PHP42,437.31(exc. VAT)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0265
  • Mfr. Part No. 8GK1051-2KK30
Each
PHP81,251.80(exc. VAT)
In Stock
ABB, Tmax XT MCCB 3P 6kA, Fixed Mount
  • RS Stock No. 236-6878
  • Mfr. Part No. 1SDA100550R1 XT5N 400 3pFF
Each
PHP35,266.01(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3691
  • Mfr. Part No. 3VA2025-7KQ36-0AA0
Each
PHP157,826.45(exc. VAT)
Temporarily out of stock
Better World
Siemens RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Sentron Range
  • RS Stock No. 243-6171
  • Mfr. Part No. 5SU1324-7FP32
Each
PHP15,361.55(exc. VAT)
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