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

33493 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
Eaton 125A British Standard Fuse, A4, 660V ac, 93.7mm
  • RS Stock No. 415-250
  • Mfr. Part No. TCP100M125
Each
PHP1,980.51(exc. VAT)
In Stock
Better World
Schneider Electric TeSys for use with TeSys GV-U
  • RS Stock No. 211-2540
  • Mfr. Part No. GVAPL01
Each
PHP6,075.30(exc. VAT)
Temporarily out of stock
Contactum Contactum 3 Phase Distribution Board, 12 Way, 125 A
  • RS Stock No. 201-0752
  • Mfr. Part No. DDB125PIR12
Each
PHP23,973.34(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric EZ9 RCCB, 63A, 2 Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 850-8583
  • Mfr. Part No. EZ9R33263
Each
PHP1,445.22(exc. VAT)
Temporarily out of stock
Eaton PKPM2 RCCB, 10A, 2 Pole, 30mA, Type B, 230V
  • RS Stock No. 232-022
  • Mfr. Part No. 108105 PKPM2-10/2/B/003-A
Each
PHP15,615.22(exc. VAT)
In Stock
Eaton 440mA F Melamine Cartridge Fuse, 10 x 35mm
  • RS Stock No. 459-7918
  • Mfr. Part No. DMM-B-44-100-R
Each (In a Pack of 5)
PHP3,973.952(exc. VAT)
Temporarily out of stock
Mersen Surge Protector
  • RS Stock No. 251-3636
  • Mfr. Part No. 83020183 / STPT2-40K275V-2P-TE GROUND MONITORING
Each
PHP8,791.84(exc. VAT)
In Stock
RS PRO MCB, 3P, 63A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0210
Each
PHP1,255.28(exc. VAT)
In Stock
RS PRO Single Phase Industrial Surge Protector, 50kA, 1.25kV, DIN Rail Mount
  • RS Stock No. 101-801
Each
PHP3,885.13(exc. VAT)
In Stock
RS PRO PC Board Non Resettable Fuse 6.3A, 250V ac
  • RS Stock No. 911-3568
Each (In a Pack of 10)
PHP6.674(exc. VAT)
In Stock
Eaton Single Phase Surge Protector, 40kA, 1.4kV, DIN Rail Mount
  • RS Stock No. 120-388
  • Mfr. Part No. 167594 SPCT2-280/2
Each
PHP16,520.65(exc. VAT)
In Stock
nVent ERIFLEX ERIFLEX Busbar
  • RS Stock No. 277-6178
  • Mfr. Part No. 568662
Each
PHP2,107.43(exc. VAT)
In Stock
RS PRO 30A Green Blade Car Fuse, 32V dc
  • RS Stock No. 563-766
Each (In a Pack of 10)
PHP21.385(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 125A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-703
  • Mfr. Part No. IL1253P36
Each
PHP52,938.92(exc. VAT)
In Stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 231-9327
  • Mfr. Part No. 1SDA100345R1 XT5N 400 TMA 400-4000 3pFF
Each
PHP63,871.13(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 7 kA
  • RS Stock No. 159-511
  • Mfr. Part No. 3VA1150-3ED36-0AA0
Each
PHP24,559.15(exc. VAT)
In Stock
Mersen 16A DI Diazed Fuse, E16 Thread Size, gG, 500V
  • RS Stock No. 377-0392
  • Mfr. Part No. J214575
Each (In a Pack of 5)
PHP280.28(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 15A
  • RS Stock No. 221-0893
  • Mfr. Part No. BDL36015LU
Each
PHP25,479.03(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric iDPN Residual Current Circuit Breaker, 32A, 1+N Pole, 300mA, Type C, 400V
  • RS Stock No. 790-7315
  • Mfr. Part No. A9D42632
Each
PHP15,867.32(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 2P, 2A Curve B, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-308
  • Mfr. Part No. 5SY4202-6
Each
PHP5,290.24(exc. VAT)
1
2
3
1675
Results per page

Related links