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

109 of 999+
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 630A 3VA2, 4 channels
  • RS Stock No. 156-794
  • Mfr. Part No. 3VA2463-8JP42-0AA0
Each
PHP444,883.41(exc. VAT)
Temporarily out of stock
ABB Flange for use with Tmax XT
  • RS Stock No. 236-6848
  • Mfr. Part No. 1SDA068652R1
Each
PHP2,689.55(exc. VAT)
In Stock
Siemens 50A NH Fuse, NH2, 500V ac
  • RS Stock No. 397-610
  • Mfr. Part No. 3NA3220
Each (In a Pack of 3)
PHP1,714.463(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 MCB, 3P, 25A, Type Z, 400V AC, 110V DC, 10 kA Breaking Capacity
  • RS Stock No. 203-721
  • Mfr. Part No. 2CDS253001R0518
Each
PHP22,956.93(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-4873
  • Mfr. Part No. 3VA1110-6MH32-0AA0
Each
PHP25,488.48(exc. VAT)
In Stock
Bourns Single, Three Phase Surge Protector, 50kA, 1kV, DIN Rail Mount
  • RS Stock No. 287-9618
  • Mfr. Part No. 1250A-1S-230
Each
PHP6,681.10(exc. VAT)
Temporarily out of stock
Eaton MCCB 1P 100A, Breaking Capacity 80 kA, Fixed Mount
  • RS Stock No. 628-8060
  • Mfr. Part No. 259141 PN1-100
1 Box of 1
PHP22,304.72(exc. VAT)
Last RS stock
RS PRO 10A Bolted Tag Fuse, A2, 690V ac, 73mm
  • RS Stock No. 221-3705
1 Bag of 5
PHP2,643.44(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 32A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9713
  • Mfr. Part No. LV510302
Each
PHP20,725.20(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7335
  • Mfr. Part No. 1SDA067519R1 Ekip LS/I In=63A XT4 4p
Each
PHP52,717.88(exc. VAT)
Currently unavailable
Better World
Schneider Electric, NSX Range MCCB 3P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 849-3964
  • Mfr. Part No. LV429632
Each
PHP16,393.43(exc. VAT)
Temporarily out of stock
Eaton RCBO, 16A Current Rating, 2P Poles, 10mA Trip Sensitivity, Type A, Type D, FRBdM Range
  • RS Stock No. 120-985
  • Mfr. Part No. 168261 FRBDM-D16/1N/001-G/A
Each
PHP13,330.90(exc. VAT)
Temporarily out of stock
Schneider Electric, Canalis Series
  • RS Stock No. 358-397
  • Mfr. Part No. KSB630SE5
Each
PHP1,233,093.74(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - PR21 2 Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0442
  • Mfr. Part No. PR21-4-20.0A-XX-V
1 Box of 5
PHP17,186.92(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT Circuit breaker 3P 50A, Breaking Capacity 16 KA, Fixed Mount
  • RS Stock No. 119-403
  • Mfr. Part No. C11E34V050L
Each
PHP135,167.71(exc. VAT)
In Stock
ABB Tmax XT Padlock Device for use with Circuit Breaker
  • RS Stock No. 232-0195
  • Mfr. Part No. 1SDA066589R1 PLL XT1-3
Each
PHP2,539.08(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 2P, 40A Curve D, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-911
  • Mfr. Part No. 2CCS862001R0401
Each
PHP16,286.19(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA2, 3 channels
  • RS Stock No. 156-834
  • Mfr. Part No. 3VA2340-0HM32-0AA0
Each
PHP251,584.20(exc. VAT)
Temporarily out of stock
Better World
ABB, XT4L MCCB 4P 250A, Fixed Mount
  • RS Stock No. 236-6636
  • Mfr. Part No. 1SDA068181R1 XT4L 250 BLOC FF
Each
PHP59,047.72(exc. VAT)
In Stock
ABB RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 201-6930
  • Mfr. Part No. 2CSR255180R1165 DS201 B16 A30
Each
PHP14,514.77(exc. VAT)
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