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

33502 Products showing for Fuses & Circuit Breakers

190 of 999+
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100 DC
  • RS Stock No. 260-9394
  • Mfr. Part No. C104TM100D
Each
PHP21,534.37(exc. VAT)
Temporarily out of stock
Eaton xEffect - FBSmV RCCB, 63A, 2 Pole, Type S, 240/415V ac
  • RS Stock No. 121-140
  • Mfr. Part No. 170145 FBSMV-63/2/1-S
Each
PHP19,940.09(exc. VAT)
Temporarily out of stock
Siemens 125A Centred Tag Fuse, NH00, 690V ac
  • RS Stock No. 396-386
  • Mfr. Part No. 3NE1022-0
Each (In a Pack of 3)
PHP7,897.85(exc. VAT)
In Stock
Eaton RCD, 10A, 2 Pole, 30mA, Type C
  • RS Stock No. 922-8711
  • Mfr. Part No. 236077 PKNM-10/1N/C/003-MW
Each
PHP11,263.71(exc. VAT)
In Stock
Mersen NH Fuse Puller, Sizes 00 → 3
  • RS Stock No. 136-0623
  • Mfr. Part No. P215592 / NHHANDLE
Each
PHP4,802.56(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 250-4249
  • Mfr. Part No. 1SDA054547R1
Each
PHP357,958.98(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric RCBO, 25A Current Rating, 3P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3319
  • Mfr. Part No. A9DQ3725
Each
PHP65,158.67(exc. VAT)
Temporarily out of stock
Siemens RCBO, 3A Current Rating, 30 → 3000mA Trip Sensitivity, Type A, SENTRON Range
  • RS Stock No. 328-365
  • Mfr. Part No. 5SV8101-6KK
Each
PHP30,643.96(exc. VAT)
In Stock
Littelfuse Fuse Holder Finger Grip Type Cap
  • RS Stock No. 787-4325
  • Mfr. Part No. 83700000005
Each (In a Pack of 5)
PHP152.856(exc. VAT)
In Stock
Littelfuse 1.1A Resettable Fuse, 33V dc
  • RS Stock No. 787-4255
  • Mfr. Part No. 1812L110/33MR
Each (In a Pack of 10)
PHP24.285(exc. VAT)
Temporarily out of stock
ABB RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 181-4380
  • Mfr. Part No. DS-ARC1 M B20 A30
Each
PHP22,980.21(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS Stock No. 260-8170
  • Mfr. Part No. C40W36E400
Each
PHP409,008.94(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Acti9 iDT40 RCCB, 25A, 3 Pole, 300mA, Type A, 400V ac
  • RS Stock No. 238-3511
  • Mfr. Part No. A9Y65325
Each
PHP24,944.89(exc. VAT)
In Stock
ABB, Pro M MCCB 1P 100A, DIN Rail Mount
  • RS Stock No. 538-3833
  • Mfr. Part No. 2CDE283001R0100 E203/100R
Each
PHP4,261.24(exc. VAT)
Temporarily out of stock
Eaton 80A Tag Fuse, 440V ac
  • RS Stock No. 261-700
  • Mfr. Part No. XS80
1 Pack of 10
PHP24,712.10(exc. VAT)
Temporarily out of stock
Siemens ALPHA Adapter Kit for use with 400/630 DIN LV HRC
  • RS Stock No. 210-1765
  • Mfr. Part No. 8GK4651-3KK12
Each
PHP8,336.65(exc. VAT)
Temporarily out of stock
Schneider Electric Canalis 1 Phase Busbar, 230-400V
  • RS Stock No. 212-276
  • Mfr. Part No. KBA40ED2203W
1 Pack of 6
PHP56,484.53(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. 240-603
  • Mfr. Part No. 102285 FAZ-C7/3-RT
Each
PHP16,714.89(exc. VAT)
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 8A, 250V ac
  • RS Stock No. 767-5077
Each (In a Pack of 10)
PHP41.675(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1+N, 63A Curve D, 230V AC, 15 kA Breaking Capacity
  • RS Stock No. 229-735
  • Mfr. Part No. 115379 FAZ-D63/1N
Each
PHP6,480.68(exc. VAT)
1
190
1676
Results per page

Related links