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

33502 Products showing for Fuses & Circuit Breakers

210 of 999+
Temporarily out of stock
Hager BD RCD, 40A, 2 Pole, 30mA, Type AC
  • RS Stock No. 144-4840
  • Mfr. Part No. BD241
Each
PHP23,484.88(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 7A Curve C, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 240-590
  • Mfr. Part No. 102245 FAZ-C7/3-NA
Each
PHP16,348.33(exc. VAT)
In Stock
ABB S203L MCB, 3P, 6A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 201-390
  • Mfr. Part No. 2CDS243701R0064
Each
PHP6,957.68(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 13A Curve B, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 247-660
  • Mfr. Part No. 132741 FAZ-B13/1-RT
Each
PHP2,074.70(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 15A Curve C, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 235-156
  • Mfr. Part No. 102289 FAZ-C15/3-RT
Each
PHP16,348.33(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 2P 20A, Breaking Capacity 70 KA, Fixed Mount
  • RS Stock No. 119-285
  • Mfr. Part No. C10S2TM020
Each
PHP27,522.37(exc. VAT)
In Stock
RS PRO 50A British Standard Fuse, A3, 550V ac, 73.5mm
  • RS Stock No. 521-2646
Each (In a Pack of 5)
PHP736.252(exc. VAT)
Temporarily out of stock
ABB SACE Emax 2 Fixed Part for use with Circuit Breaker
  • RS Stock No. 231-9318
  • Mfr. Part No. 1SDA073912R1 E2.2 W FP Iu=2500 4p HR
Each
PHP201,938.67(exc. VAT)
In Stock
Better World
Schneider Electric Compact Nsx, Easypact Cvs Cable Connector for use with 2 Cables 50 mm2 → 120 mm2
  • RS Stock No. 221-1146
  • Mfr. Part No. LV429218
Each
PHP14,165.96(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 2P 20A, Breaking Capacity 35 kA, Clip-On
  • RS Stock No. 341-122
  • Mfr. Part No. BGF26020
Each
PHP50,228.96(exc. VAT)
In Stock
Phoenix Contact Surge Protector, 5kA, DIN Rail Mount
  • RS Stock No. 241-6060
  • Mfr. Part No. 2801593
Each
PHP9,692.96(exc. VAT)
Temporarily out of stock
Eaton Busbar, 600V ac, 60mm Pitch
  • RS Stock No. 178-8005
  • Mfr. Part No. 101452 BBA0-32
Each
PHP4,019.03(exc. VAT)
Temporarily out of stock
Schurter PC Board Non Resettable Fuse, Radial 5A, 250V ac
  • RS Stock No. 284-5186
  • Mfr. Part No. 0034.6021
Each (In a Pack of 10)
PHP41.55(exc. VAT)
In Stock
Better World
Siemens, 0AA0 MCCB 3P 125A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-5982
  • Mfr. Part No. 3VA1112-5ED32-0AA0
Each
PHP47,101.63(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 50A
  • RS Stock No. 221-0900
  • Mfr. Part No. BGL36050LU
Each
PHP36,659.43(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 40A, Fixed Mount
  • RS Stock No. 260-7558
  • Mfr. Part No. C11E3TM040L
Each
PHP26,372.13(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 320A, Breaking Capacity 110 kA, DIN Rail Mount
  • RS Stock No. 271-9495
  • Mfr. Part No. 3VA1332-7FF42-0AA0
Each
PHP142,403.67(exc. VAT)
In Stock
Siemens SENTRON 2 Phase Busbar
  • RS Stock No. 187-5196
  • Mfr. Part No. 5ST3734
Each
PHP827.83(exc. VAT)
Temporarily out of stock
Schneider Electric A9R RCCB, 40A, 2 Pole, 30mA, Type AC, 220 → 240V ac
  • RS Stock No. 653-863
  • Mfr. Part No. A9R41240
Each
PHP17,599.33(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 iID RCCB, 100A, 2 Pole, 300mA, Type AC, 220 → 240V ac
  • RS Stock No. 654-709
  • Mfr. Part No. SEA9R15291
Each
PHP34,842.87(exc. VAT)
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