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

65 of 999+
Temporarily out of stock
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 45A
  • RS Stock No. 221-0895
  • Mfr. Part No. BDL36045LU
Each
PHP26,265.03(exc. VAT)
In Stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 874-4382
  • Mfr. Part No. 3VA2116-5HL32-0AA0
Each
PHP50,595.13(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 320A, Fixed Mount
  • RS Stock No. 260-8112
  • Mfr. Part No. C40H32M320
Each
PHP180,443.95(exc. VAT)
In Stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 874-4275
  • Mfr. Part No. 3VA1163-4EF36-0AA0
Each
PHP27,756.96(exc. VAT)
In Stock
Schneider Electric Acti9 iID RCCB, 80A, 2 Pole, 30mA, Type AC, 240V ac
  • RS Stock No. 589-856
  • Mfr. Part No. A9R11280
Each
PHP20,841.52(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric ComPact NSX Mounting Plate for use with Compact NSX 400/630 circuit breaker
  • RS Stock No. 219-9404
  • Mfr. Part No. LV432532
Each
PHP23,491.29(exc. VAT)
In Stock
Schneider Electric C120 Acti9 C120 MCB, 2P, 125A Curve D, 380 → 415V AC, 250V DC, 30 kA Breaking Capacity
  • RS Stock No. 130-385
  • Mfr. Part No. A9N18503
Each
PHP27,537.52(exc. VAT)
Temporarily out of stock
Rockwell Automation FB50 Busbar, 1000V
  • RS Stock No. 282-2355
  • Mfr. Part No. FB50608Q1
Each (In a Pack of 4)
PHP3,646.46(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 3P, 16A Curve D, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-575
  • Mfr. Part No. 2CCS863001R0161
Each
PHP22,236.25(exc. VAT)
Last RS stock
Mersen Surge Protector
  • RS Stock No. 179-3058
  • Mfr. Part No. 83020106 / STPT2-40K275V-1P
Each
PHP3,263.07(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 2P 70A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 147-683
  • Mfr. Part No. 3VA5170-6ED21-1AA0
Each
PHP30,528.00(exc. VAT)
In Stock
Better World
Schneider Electric Compact Nsx, Compact Nsx Dc Plug In Kit for use with Compact Nsx 100/160/250
  • RS Stock No. 221-1181
  • Mfr. Part No. LV429289
Each
PHP16,919.65(exc. VAT)
In Stock
Better World
Schneider Electric RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 191-6074
  • Mfr. Part No. A9DA2616
Each
PHP15,006.07(exc. VAT)
In Stock
Schneider Electric Acti9 iC60 RCCB, 32A, 2 Pole, 30mA, Type C, 220 → 240V ac
  • RS Stock No. 110-285
  • Mfr. Part No. A9D07232
Each
PHP47,635.02(exc. VAT)
In Stock
Eaton RCCB, 80A, 1+N Pole, 30mA, Type AC
  • RS Stock No. 667-0627
  • Mfr. Part No. 235402 PFIM-80/2/003-MW
Each
PHP14,531.13(exc. VAT)
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 2.5A, 250V
  • RS Stock No. 767-5159
Each (In a Pack of 10)
PHP17.32(exc. VAT)
In Stock
RS PRO PC Board Non Resettable Fuse 2A, 250V ac
  • RS Stock No. 911-3540
Each (In a Pack of 10)
PHP18.392(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 210-1715
  • Mfr. Part No. 3VA2110-5KP46-0AA0
Each
PHP107,152.40(exc. VAT)
Temporarily out of stock
ABB Distribution Board, 20 Way, 250 A
  • RS Stock No. 539-1610
  • Mfr. Part No. 1SKP820142C0059 EPB25-320 CUK
Each
PHP73,840.72(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iIDK RCCB, 40A, 2 Pole, 30mA, Type AC, 220 → 240V ac
  • RS Stock No. 238-3455
  • Mfr. Part No. A9R55240
Each
PHP8,880.72(exc. VAT)
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