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

300 of 999+
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 3.2kA , 4 channels , Withdrawable
  • RS Stock No. 132-729
  • Mfr. Part No. 183785 IZMX40B4-P32W-1
Each
PHP2,133,110.45(exc. VAT)
Temporarily out of stock
Eaton NZM Handle for use with NS2…-NA, NZM2…-NA
  • RS Stock No. 120-809
  • Mfr. Part No. 155486 NZM2-XSH-4X-84-NA
Each
PHP79,380.59(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric RCBO, 40A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3297
  • Mfr. Part No. A9DK5640
Each
PHP20,540.53(exc. VAT)
In Stock
Bourns 2.5A Resettable Fuse, 30V
  • RS Stock No. 647-8594P
  • Mfr. Part No. MF-R250-0-10
Each (Supplied in a Bag)
PHP23.20(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 3.15A, 250V ac
  • RS Stock No. 284-5388
  • Mfr. Part No. 0034.6620
Each (In a Pack of 10)
PHP23.128(exc. VAT)
In Stock
Eaton 125A Centred Tag Fuse, NH1, 690V ac
  • RS Stock No. 182-1462
  • Mfr. Part No. 170M3813D
Each (In a Box of 6)
PHP11,000.72(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-500
  • Mfr. Part No. 3VA6580-7JP42-0AA0
Each
PHP594,551.40(exc. VAT)
Temporarily out of stock
Hager BF3 RCCB, 40A, 3 Pole, 300mA, Type AC, 230 → 400V ac
  • RS Stock No. 597-978
  • Mfr. Part No. BF343
Each
PHP23,626.32(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 7A Curve C, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 231-422
  • Mfr. Part No. 113757 FAZ-C7/1-NA-DC
Each
PHP8,943.93(exc. VAT)
Temporarily out of stock
Mersen 100A Bolted Tag Fuse, A4C, 240 V dc, 415V ac, 94mm
  • RS Stock No. 178-1041
  • Mfr. Part No. X1045301 / BTCP42V100.
Each (In a Pack of 10)
PHP1,246.281(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact SU200 MR Circuit Breaker, 1P, 15A Curve K, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 202-897
  • Mfr. Part No. 2CDS271347R0457
Each
PHP9,910.17(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4140 MCB, 1P, 40A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-743
  • Mfr. Part No. 5SJ4140-8HG41
Each
PHP8,287.47(exc. VAT)
Temporarily out of stock
Siemens 12V ac Circuit Trip
  • RS Stock No. 203-2315
  • Mfr. Part No. 5TT4101-3
Each
PHP1,658.77(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 268-646
  • Mfr. Part No. 3VA6110-6HM41-0AA0
Each
PHP120,962.99(exc. VAT)
Temporarily out of stock
Eaton xE?ect - FRCmM-NA RCCB, 25A, 4 Pole, 30mA, 110/190V
  • RS Stock No. 121-096
  • Mfr. Part No. 167705 FRCMM-25/4/003-G/A-NA-110
Each
PHP13,898.22(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric MCCB 4P 16 → 160A
  • RS Stock No. 178-7879
  • Mfr. Part No. LV426923
Each
PHP2,250.42(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7278
  • Mfr. Part No. 1SDA067389R1 TMA 225-2250 XT4 3p
Each
PHP34,977.24(exc. VAT)
Temporarily out of stock
ABB F200 RCCB, 25A, 4 Pole, 500mA, Type AC, 230V ac
  • RS Stock No. 225-6123
  • Mfr. Part No. 2CSF204023R4250 F204 AC-25/0.5
Each
PHP13,288.88(exc. VAT)
In Stock
Littelfuse 0.2A Resettable Fuse, 72V
  • RS Stock No. 517-6584P
  • Mfr. Part No. RXEF020
Each (Supplied in a Bag)
PHP15.246(exc. VAT)
Temporarily out of stock
Schneider Electric Multi 9 Multi9 MCB, 3P, 63A, 240V AC, 10 kA Breaking Capacity
  • RS Stock No. 119-431
  • Mfr. Part No. M9F52363
Each
PHP27,959.54(exc. VAT)
1
300
1676
Results per page

Related links