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

299 of 999+
In Stock
Siemens 1 Phase Surge Protector, 40kA, DIN Rail Mount
  • RS Stock No. 202-7073
  • Mfr. Part No. 5SD7464-1
Each
PHP29,444.75(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 3P 80A, Breaking Capacity 4 kA, Plug In
  • RS Stock No. 230-651
  • Mfr. Part No. 112740 NZMC1-A80-SVE
Each
PHP37,828.42(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 1P, 500mA Curve K, 230V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-975
  • Mfr. Part No. 2CDS271061R0157
Each
PHP10,287.61(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 231-388
  • Mfr. Part No. 113373 NZMH2-4-A80-SVE
Each
PHP67,812.58(exc. VAT)
Temporarily out of stock
xEnergy Basic Distribution Board Enclosure
  • RS Stock No. 252-401
  • Mfr. Part No. 195325 BPM-O-1100/11-P-EP
Each
PHP76,463.27(exc. VAT)
Temporarily out of stock
Eaton Busbar Support, xEnergy Series
  • RS Stock No. 247-673
  • Mfr. Part No. 133099 XBBB135
Each
PHP2,177.33(exc. VAT)
Temporarily out of stock
Hager BDH Series RCCB, 40A, 1P+N Pole, 30mA, Type A-HI
  • RS Stock No. 597-972
  • Mfr. Part No. BDH240F
Each
PHP20,645.90(exc. VAT)
In Stock
ABB RCBO, 10A Current Rating, 2P Poles, 100mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6894
  • Mfr. Part No. 2CSR255180R2105 DS201 B10 A100
Each
PHP18,359.61(exc. VAT)
Temporarily out of stock
Siemens SENTRON 1 Phase Busbar
  • RS Stock No. 266-507
  • Mfr. Part No. 8US1621-2FK02
1 Pack of 12
PHP14,211.27(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3493
  • Mfr. Part No. 3VA1340-5GF42-0AA0
Each
PHP116,090.34(exc. VAT)
Temporarily out of stock
Siemens SENTRON Plug In Kit for use with 3VA1 400/630 and 3VA2 400/630
  • RS Stock No. 210-9373
  • Mfr. Part No. 3VA9323-0KP00
Each
PHP54,941.54(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 200A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 231-390
  • Mfr. Part No. 113383 NZMH2-4-A200/125-SVE
Each
PHP147,574.84(exc. VAT)
Temporarily out of stock
Eaton xE?ect - FBHmV RCCB, 125A, 2 Pole, 500mA, 240/415V ac
  • RS Stock No. 121-134
  • Mfr. Part No. 170140 FBHMV-125/2/05-S/A
Each
PHP32,151.68(exc. VAT)
Temporarily out of stock
Siemens 8GK Support for use with ALPHA Distribution Board
  • RS Stock No. 229-9889
  • Mfr. Part No. 8GK9910-0KK05
Each (In a Pack of 20)
PHP211.96(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT Terminal Shield for use with Series Connection Of Poles - Compact Nsx400
  • RS Stock No. 207-132
  • Mfr. Part No. LV438346
Each
PHP24,621.83(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3843
  • Mfr. Part No. 3VA2063-6JP32-0AA0
Each
PHP106,214.97(exc. VAT)
Temporarily out of stock
Hager CDS RCD Switch, 40A, 2 Pole, 30mA, Type F, 230V
  • RS Stock No. 599-841
  • Mfr. Part No. CDS740F
Each
PHP11,378.14(exc. VAT)
Temporarily out of stock
ABB S801C MCB, 1P, 63A Curve K, 400V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-356
  • Mfr. Part No. 2CCS881001R0597
Each
PHP6,233.19(exc. VAT)
Temporarily out of stock
Schneider Electric Flexible Element, 500mm, 40A, KBB Series
  • RS Stock No. 655-015
  • Mfr. Part No. KBB40DF4405TW
Each
PHP40,166.77(exc. VAT)
In Stock
Eaton, xEnergy MCCB 1P 160A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 628-8026
  • Mfr. Part No. 265724 NZMN2-M160
1 Box of 1
PHP52,383.04(exc. VAT)
1
299
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