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

184 of 999+
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 150A, Fixed Mount
  • RS Stock No. 260-8009
  • Mfr. Part No. C25V3MA150
Each
PHP157,923.84(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 3 Phase Distribution Board, 16 Way, 250 A
  • RS Stock No. 336-635
  • Mfr. Part No. SEA9BPN16
Each
PHP117,870.19(exc. VAT)
Temporarily out of stock
SIBA 25A NH Fuse, NH000, 690V ac
  • RS Stock No. 431-6961
  • Mfr. Part No. 20-477-34/25A
Each
PHP4,697.81(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX160/250 Circuit Breakers
  • RS Stock No. 260-7711
  • Mfr. Part No. C1632G160
Each
PHP37,850.85(exc. VAT)
Temporarily out of stock
ABB Tmax Shunt Closing Release for use with Tmax T
  • RS Stock No. 237-6005
  • Mfr. Part No. 1SDA062080R1 T7M-X1 110VAC/DC
Each
PHP12,504.37(exc. VAT)
In Stock
Better World
Schneider Electric Auto Recloser for use with 2
  • RS Stock No. 220-1209
  • Mfr. Part No. A9C70342
Each
PHP51,385.98(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 7.5 kA, Plug In
  • RS Stock No. 229-511
  • Mfr. Part No. 112799 NZMH1-A50-SVE
Each
PHP40,394.31(exc. VAT)
In Stock
Eaton 63A British Standard Fuse, LET, 150 V dc, 240V ac, 41.8mm
  • RS Stock No. 156-8838
  • Mfr. Part No. 63LET
Each
PHP622.51(exc. VAT)
In Stock
Bourns Thermal Fuse +82°C 60 A, 28V
  • RS Stock No. 258-6355
  • Mfr. Part No. AC82ABD
Each
PHP127.62(exc. VAT)
Temporarily out of 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)
Temporarily out of stock
Siemens Alpha Mounting Rail for use with Standard Mounting Rail
  • RS Stock No. 209-7097
  • Mfr. Part No. 8GK9910-1KK40
Each (In a Pack of 10)
PHP941.448(exc. VAT)
In Stock
Schneider Electric Resi9 R9F23 Circuit Breaker, 3P, 32A Curve B, 400V AC, 6000 A Breaking Capacity
  • RS Stock No. 655-489
  • Mfr. Part No. R9F23332
Each
PHP7,557.49(exc. VAT)
In Stock
Mersen 125A Bolted Tag Fuse, B2C, 240 V dc, 415V ac, 111mm
  • RS Stock No. 178-1063
  • Mfr. Part No. T226314 / BTF42V125
Each (In a Pack of 5)
PHP2,140.13(exc. VAT)
In Stock
Miniature Circuit Breaker
  • RS Stock No. 599-635
  • Mfr. Part No. 2CCS472001R1064
Each
PHP15,815.13(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 4 kA, Plug In
  • RS Stock No. 231-157
  • Mfr. Part No. 113512 NZMC3-S250-AVE
Each
PHP179,538.39(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Vigi iDT40 RCD, 40A, 3 Pole, 30mA
  • RS Stock No. 191-6144
  • Mfr. Part No. A9Y62340
Each
PHP27,743.64(exc. VAT)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 232-0127
  • Mfr. Part No. 1SDA060202R1 T6N630 FF TMA 630A
Each
PHP145,313.16(exc. VAT)
Temporarily out of stock
ABB, XT2N MCCB 4P 100A, Fixed Mount
  • RS Stock No. 237-6222
  • Mfr. Part No. 1SDA067039R1 XT2N 160 TMA 100A FF
Each
PHP34,980.43(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 40A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9749
  • Mfr. Part No. LV510473
Each
PHP42,833.59(exc. VAT)
Temporarily out of stock
ABB S804C MCB, 4P, 13A Curve B, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-974
  • Mfr. Part No. 2CCS884001R0135
Each
PHP17,679.85(exc. VAT)
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