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

1636 of 999+
Eaton 224A NH Fuse, 63 x 40 x 135mm, 500V ac
  • RS Stock No. 254-999
  • Mfr. Part No. 224NHG1BI NH FUSE 224A 500V GL/GG SIZE 1
1 Pack of 3
PHP2,229.52(exc. VAT)
Schurter SMD Non Resettable Fuse 20A, 32 V ac, 63V dc
  • RS Stock No. 703-2786P
  • Mfr. Part No. 3413.0331.22
Each (Supplied on a Reel)
PHP32.67(exc. VAT)
ABB S304 MCB, 4P, 13A Curve D, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-365
  • Mfr. Part No. 2CDS384001R0131
Each
PHP38,585.90(exc. VAT)
Schurter SMD Non Resettable Fuse 500mA, 250 V dc, 277V ac
  • RS Stock No. 173-8039
  • Mfr. Part No. 3403.0271.23
1 Reel of 1500
PHP112,830.30(exc. VAT)
ABB MCCB Molded Case Circuit Breaker 3P 400A, Fixed Mount
  • RS Stock No. 250-4242
  • Mfr. Part No. 1SDA054541R1
Each
PHP302,268.68(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 85 kA
  • RS Stock No. 209-7071
  • Mfr. Part No. 3VA2140-6KP32-0AA0
Each
PHP110,025.19(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4750
  • Mfr. Part No. 3VA2163-7JP42-0AA0
Each
PHP107,605.51(exc. VAT)
RS PRO PC Board Non Resettable Fuse, Radial 250mA, 250V
  • RS Stock No. 767-5099
Each (In a Pack of 10)
PHP44.036(exc. VAT)
Eaton IZMX/INX Electronic Circuit Breaker 1.25kA , 3 channels , Fixed
  • RS Stock No. 132-663
  • Mfr. Part No. 183636 IZMX40H3-P12F-1
Each
PHP886,794.47(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 211-3735
  • Mfr. Part No. 3VA1140-3EF46-0AA0
Each
PHP33,604.26(exc. VAT)
ABB RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 136-7794
  • Mfr. Part No. 2CSR275051R1165 DSE201 M B16 AC30 - N Blue
Each
PHP10,211.66(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3788
  • Mfr. Part No. 3VA2140-6HN36-0AA0
Each
PHP58,004.08(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - IELK1 Single Pole Panel Mount, 90A Current Rating
  • RS Stock No. 275-0261
  • Mfr. Part No. IELK1-1-52-90.0-A-01-V
1 Box of 5
PHP28,760.50(exc. VAT)
ABB Tmax XT Connection Kit for use with Tmax XT
  • RS Stock No. 237-6193
  • Mfr. Part No. 1SDA066983R1 PTC XT2-XT4 W
Each
PHP6,853.64(exc. VAT)
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA, 4 channels
  • RS Stock No. 155-871
  • Mfr. Part No. 3VA2450-7JP42-0AA0
Each
PHP370,367.32(exc. VAT)
Better World
ABB, XT2L MCCB 4P 100A, Fixed Mount
  • RS Stock No. 236-6500
  • Mfr. Part No. 1SDA067956R1 XT2L 160 Ekip I 100A FF
Each
PHP65,604.02(exc. VAT)
Siemens Alpha Assembly Kit for use with Fuse Switch Disconnector
  • RS Stock No. 216-4802
  • Mfr. Part No. 8GK4556-3KK12
Each
PHP7,094.38(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 63A, Fixed Mount
  • RS Stock No. 260-7545
  • Mfr. Part No. C11B4TM063L
Each
PHP38,007.46(exc. VAT)
Eaton IZMX/INX Withdrawable Unit for use with IZMX-CAS164
  • RS Stock No. 132-403
  • Mfr. Part No. 184191 IZMX-SH164-1
Each
PHP27,791.08(exc. VAT)
Eaton 2.6A Resettable Fuse, 6V
  • RS Stock No. 225-8287
  • Mfr. Part No. PTSLR18126V260
Each (In a Pack of 10)
PHP63.244(exc. VAT)
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