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
Fuses - PCB
Fuses - PCB

33502 Products showing for Fuses & Circuit Breakers

216 of 999+
Temporarily out of stock
ABB Front Terminal for use with S6 800, T6 800
  • RS Stock No. 250-4493
  • Mfr. Part No. 1SDA013954R1
Each
PHP14,218.79(exc. VAT)
Temporarily out of stock
Schneider Electric Canalis Busbar Connector, 690V
  • RS Stock No. 655-160
  • Mfr. Part No. KSA400ED43012
Each
PHP118,456.87(exc. VAT)
Temporarily out of stock
Schneider Electric Linergy Busbar Connector, 690V
  • RS Stock No. 655-070
  • Mfr. Part No. LVS04413
Each
PHP87,546.91(exc. VAT)
Temporarily out of stock
Siemens 5SM36 RCCB, 125A, 2 Pole, 300mA, Type A, 230V
  • RS Stock No. 328-447
  • Mfr. Part No. 5SM3615-6KK
Each
PHP32,608.49(exc. VAT)
In Stock
Legrand RCCB, 63A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 266-1363
  • Mfr. Part No. 411651
Each
PHP18,489.90(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SL66 MCB, 4P, 50A Curve B, 440V AC, 62.5V DC, 6 kA Breaking Capacity
  • RS Stock No. 328-388
  • Mfr. Part No. 5SL6650-6
Each
PHP13,782.45(exc. VAT)
Temporarily out of stock
ABB 25A Tag Fuse, 135 x 30 x 65mm, 500V
  • RS Stock No. 251-3455
  • Mfr. Part No. 1SCA022627R3410
1 Box of 3
PHP4,134.94(exc. VAT)
Temporarily out of stock
ABB Tmax XT Interlock Kit for use with Tmax XT
  • RS Stock No. 237-6125
  • Mfr. Part No. 1SDA066637R1 MIR-HR XT1..XT4
1 Box of 1
PHP14,097.53(exc. VAT)
In Stock
Eaton PC Board Non Resettable Fuse, Radial 1.6A, 250V ac
  • RS Stock No. 769-3205
  • Mfr. Part No. SR-5-1-6A-BK
Each (In a Pack of 10)
PHP39.648(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SL66 MCB, 4P, 40A Curve B, 440V AC, 62.5V DC, 6 kA Breaking Capacity
  • RS Stock No. 328-411
  • Mfr. Part No. 5SL6640-6
Each
PHP11,289.88(exc. VAT)
Temporarily out of stock
ABB 125A Tag Fuse, NH00, 690V
  • RS Stock No. 258-9622
  • Mfr. Part No. 1SCA022724R0610
1 Box of 3
PHP7,181.55(exc. VAT)
In Stock
Eaton 32A British Standard Fuse, A2, 690V, 73mm
  • RS Stock No. 181-8710
  • Mfr. Part No. 32H07-660
Each
PHP1,860.00(exc. VAT)
Temporarily out of stock
Bourns 225A Tag Fuse, 38mm, 800V ac/dc, 24.1mm
  • RS Stock No. 254-4146
  • Mfr. Part No. PF-FB2-225
Each (In a Box of 10)
PHP10,031.055(exc. VAT)
In Stock
HENSEL 1, 3 Phase Distribution Board, 24 Way, 63 A
  • RS Stock No. 183-2860
  • Mfr. Part No. KV9224M
Each
PHP6,873.68(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 1kA, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-5248
  • Mfr. Part No. 3VA2510-5HL42-0AA0
Each
PHP370,261.08(exc. VAT)
Temporarily out of stock
ABB F200 RCCB, 25A, 4 Pole, 30mA, Type AC
  • RS Stock No. 537-7412
  • Mfr. Part No. 2CSF204001R1250 F204 AC-25/0,03
Each
PHP10,661.15(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, PowerPact MCCB 3P 15A, Breaking Capacity 18 kA, Fixed Mount
  • RS Stock No. 219-8305
  • Mfr. Part No. BGL36015LU
Each
PHP60,935.28(exc. VAT)
In Stock
ABB Surge Protector, 1.8kV, DIN Rail Mount
  • RS Stock No. 289-1630
  • Mfr. Part No. 2CTB803871R1200
Each
PHP5,701.39(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 6A Current Rating, 1P Poles, Type C, Acti9 Range
  • RS Stock No. 245-080
  • Mfr. Part No. A9D01806
Each
PHP15,075.15(exc. VAT)
Temporarily out of stock
ABB Flange for use with Tmax XT
  • RS Stock No. 236-6852
  • Mfr. Part No. 1SDA068656R1
Each
PHP3,915.82(exc. VAT)
1
216
1676
Results per page

Related links