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

305 of 999+
Temporarily out of stock
Eaton xE?ect - FRCmM-NA RCCB, 25A, 2 Pole, 300mA, Type A, 240/415V ac
  • RS Stock No. 120-290
  • Mfr. Part No. 167116 FRCMM-25/2/03-A-NA
Each
PHP10,991.61(exc. VAT)
In Stock
Bourns 1.85A Resettable Fuse, 72V
  • RS Stock No. 647-8718
  • Mfr. Part No. MF-RX185/72-0
Each (In a Pack of 10)
PHP26.354(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 3+N, 20A Curve K, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 203-801
  • Mfr. Part No. 2CDS383103R0487
Each
PHP35,468.70(exc. VAT)
Temporarily out of stock
Siemens Auxiliary Release Shunt trip for use with 3VA1, 3VA20-26
  • RS Stock No. 275-931
  • Mfr. Part No. 3VA9978-0BL10
Each
PHP9,896.97(exc. VAT)
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with Door Mounted Rotary Operator
  • RS Stock No. 628-843
  • Mfr. Part No. 8GK6430-4KK13
Each
PHP18,270.05(exc. VAT)
Temporarily out of stock
ABB Shunt Trip Shunt trip for use with S200U, S200UP
  • RS Stock No. 203-766
  • Mfr. Part No. 2CDS200908R0002
Each
PHP13,014.74(exc. VAT)
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 4A, 250V ac
  • RS Stock No. 767-5222
Each (In a Pack of 10)
PHP13.652(exc. VAT)
Temporarily out of stock
Hager ARC MCB, 2P, 10A, 500V AC, 3 kA Breaking Capacity
  • RS Stock No. 602-087
  • Mfr. Part No. ARC710F
Each
PHP17,116.45(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 2P, 40A, Type Z, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-054
  • Mfr. Part No. 2CDS272001R0558
Each
PHP22,342.76(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 4P, 40A Curve B, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-428
  • Mfr. Part No. 2CDS274061R0405
Each
PHP67,809.25(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-593
  • Mfr. Part No. 3VA6560-7HN36-2AA0
Each
PHP363,622.06(exc. VAT)
Temporarily out of stock
Schneider Electric RCD, 125A, 4 Pole
  • RS Stock No. 219-9021
  • Mfr. Part No. A9N18561
Each
PHP109,457.44(exc. VAT)
Temporarily out of stock
MEAN WELL Surge Protector, 10kA, 277V (Volts), Chassis Mount
  • RS Stock No. 563-404
  • Mfr. Part No. SPD-10S-277S
Each
PHP986.49(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 249-679
  • Mfr. Part No. 3VA6460-0HM41-0AA0
Each
PHP488,983.70(exc. VAT)
Temporarily out of stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELK1 Single Pole Panel Mount, 10A Current Rating
  • RS Stock No. 275-0264
  • Mfr. Part No. IELK1-1-61-10.0-AC-01-V
Each
PHP4,809.02(exc. VAT)
Temporarily out of stock
BB-EV 2 Phase Busbar, 690V, 27mm Pitch
  • RS Stock No. 247-514
  • Mfr. Part No. 168867 BB-EVP-16/2P-1,5MU
Each
PHP4,098.08(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 32A, Breaking Capacity 36kA
  • RS Stock No. 260-9739
  • Mfr. Part No. LV510342
Each
PHP37,790.64(exc. VAT)
In Stock
Siemens 8GK Profile Half Cylinder
  • RS Stock No. 203-3166
  • Mfr. Part No. 8GK9560-0KK10
Each
PHP5,851.71(exc. VAT)
Temporarily out of stock
Eaton xComfort KLV Installaton Accessory for use with Basic Device, Installation Distribution Boards, KLV for Projects
  • RS Stock No. 125-019
  • Mfr. Part No. 178880 KLV-SF3-4PR
Each
PHP3,840.33(exc. VAT)
Temporarily out of stock
Eaton xComfort KLV Distribution Board Enclosure
  • RS Stock No. 125-097
  • Mfr. Part No. 178828 KLV-48HWS-F
Each
PHP17,611.42(exc. VAT)
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