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

78 of 999+
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 50mA, 125V ac
  • RS Stock No. 738-3309
  • Mfr. Part No. 39600500000
Each (In a Pack of 10)
PHP116.263(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 2P, 20A Curve C, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-153
  • Mfr. Part No. 2CCS862001R0204
Each
PHP12,765.67(exc. VAT)
In Stock
Better World
Schneider Electric RCBO, 10A Current Rating, 1P+N Poles, Type AB, Easy9 Range
  • RS Stock No. 850-8644
  • Mfr. Part No. EZ9D16810
Each
PHP2,117.04(exc. VAT)
Temporarily out of stock
ABB F200 RCCB, 63A, 2 Pole, 300mA, Type A
  • RS Stock No. 707-6199
  • Mfr. Part No. 2CSF202101R3630 F202 A-63/0,3
Each
PHP14,330.89(exc. VAT)
In Stock
SIBA 50A NH Fuse, NH000, 690V
  • RS Stock No. 893-8559
  • Mfr. Part No. 20-477-08/50A
Each (In a Pack of 3)
PHP1,251.443(exc. VAT)
In Stock
ABB 3 Phase Busbar Cover, 690V
  • RS Stock No. 231-8933
  • Mfr. Part No. 1SAM201906R1113 PS1-3-1-65
1 Box of 1
PHP1,228.38(exc. VAT)
Temporarily out of stock
Lovato Single Phase Surge Protector, 40kA, DIN Rail Mount
  • RS Stock No. 248-5669
  • Mfr. Part No. SG2DG600M2R
Each
PHP9,544.43(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 25 kA
  • RS Stock No. 209-6960
  • Mfr. Part No. 3VA1110-3ED32-0AA0
Each
PHP24,944.23(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 320A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9784
  • Mfr. Part No. LV540315
Each
PHP86,675.32(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 2 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2720
  • Mfr. Part No. A9XPH212
Each
PHP3,648.02(exc. VAT)
In Stock
Murrelektronik Limited Mico Pro Circuit Breaker
  • RS Stock No. 285-5872
  • Mfr. Part No. 9000-41011-0400000
Each
PHP3,001.39(exc. VAT)
Temporarily out of stock
Siemens 5SM24 RCCB, 63A, 4 Pole, 100mA, Type A, 400V
  • RS Stock No. 328-391
  • Mfr. Part No. 5SM2445-6
Each
PHP32,501.49(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 30A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-570
  • Mfr. Part No. 3VA5130-5EC31-0AA0
Each
PHP27,077.50(exc. VAT)
Temporarily out of stock
Eaton 355A Tag Fuse, 76 x 254mm, 3.6kV
  • RS Stock No. 228-726
  • Mfr. Part No. 3.6WKFHO355
1 Pack of 3
PHP293,903.59(exc. VAT)
Temporarily out of stock
ABB S800U MCB, 2P, 30A, Type Z, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-898
  • Mfr. Part No. 2CCS862017R0305
Each
PHP15,995.79(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 2A, 125V ac/dc
  • RS Stock No. 219-6232
  • Mfr. Part No. 0154002.DRT
Each (In a Pack of 10)
PHP181.584(exc. VAT)
Temporarily out of stock
ABB S403E MCB, 4P, 20A Curve C, 12V AC, 6 kA Breaking Capacity
  • RS Stock No. 140-609
  • Mfr. Part No. 2CCS553103R8204
Each
PHP11,817.59(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 200mA, 125V ac/dc
  • RS Stock No. 878-1271
  • Mfr. Part No. 0273.200V
Each
PHP729.19(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 32A, Fixed Mount
  • RS Stock No. 260-9464
  • Mfr. Part No. C10H3TM032
Each
PHP47,946.44(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 80A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-693
  • Mfr. Part No. 3VA5180-1MU31-0AA0
Each
PHP37,503.25(exc. VAT)
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