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

251 of 999+
In Stock
SIB Copper Earth Bar L. 46mm x W. 150mm x H. 60mm 2 Ways
  • RS Stock No. 270-5241
  • Mfr. Part No. P04388
1 Box of 10
PHP4,761.32(exc. VAT)
In Stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 70 kA
  • RS Stock No. 210-1630
  • Mfr. Part No. 3VA1116-6EF32-0AA0
Each
PHP51,492.00(exc. VAT)
Temporarily out of stock
Schneider Electric Resi9 Electronic Circuit Breaker 32A Resi9, Clip-On Type C
  • RS Stock No. 429-450
  • Mfr. Part No. R9PDCS32
Each
PHP49,818.42(exc. VAT)
Currently unavailable
Bourns 0.1A Resettable Fuse, 60V
  • RS Stock No. 647-8134
  • Mfr. Part No. MF-MSMF010-2
Each (In a Pack of 10)
PHP23.303(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7323
  • Mfr. Part No. 1SDA067503R1 Ekip I In=40A XT4 3p
Each
PHP40,064.80(exc. VAT)
In Stock
Schneider Electric Acti9 Remote Control System for use with iC60 Circuit Breakers
  • RS Stock No. 276-1538
  • Mfr. Part No. A9C70124
Each
PHP40,504.30(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 630A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4824
  • Mfr. Part No. 3VA2563-7HM32-0AA0
Each
PHP290,220.98(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Straight Busbar Trunking, 2m, 63A, KNA Series
  • RS Stock No. 219-8896
  • Mfr. Part No. KNA63ED4204
Each
PHP22,079.49(exc. VAT)
Temporarily out of stock
355A NH Fuse, 71 x 54 x 150mm, 400V ac
  • RS Stock No. 261-825
  • Mfr. Part No. 355NHG2BI-400
1 Pack of 3
PHP3,716.51(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 20A, Fixed Mount
  • RS Stock No. 236-6699
  • Mfr. Part No. 1SDA068333R1 XT4H 160 TMD 20A FF
Each
PHP50,535.46(exc. VAT)
Temporarily out of stock
Better World
Siemens 5sV3 RCCB, 40A, 2 Pole, 100mA, Type A, 230V ac
  • RS Stock No. 211-9660
  • Mfr. Part No. 5SV3414-6
Each
PHP11,695.46(exc. VAT)
Temporarily out of stock
Schneider Electric Linergy Busbar Connector, 690V
  • RS Stock No. 654-899
  • Mfr. Part No. LVS04412
Each
PHP61,015.25(exc. VAT)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Arrester, 25kA, 264V ac, DIN Rail Mount
  • RS Stock No. 496-876
  • Mfr. Part No. 1461303
Each
PHP55,705.21(exc. VAT)
Temporarily out of stock
ABB 80A Tag Fuse, 79 x 30 x 60mm, 690V
  • RS Stock No. 250-4460
  • Mfr. Part No. 1SCA022700R9440
1 Box of 3
PHP1,880.80(exc. VAT)
In Stock
Eaton 100A British Standard Fuse, A4, 660V ac, 93.7mm
  • RS Stock No. 418-546
  • Mfr. Part No. TCP100
Each
PHP1,993.58(exc. VAT)
In Stock
Littelfuse 5A Resettable Fuse, 16V
  • RS Stock No. 517-6922
  • Mfr. Part No. RGEF500
Each (In a Pack of 5)
PHP32.572(exc. VAT)
Limited stock
Mersen 160A NH Fuse, NH00, 690V ac
  • RS Stock No. 448-3437
  • Mfr. Part No. K320169
Each
PHP4,444.25(exc. VAT)
Temporarily out of stock
Eaton Earthing Strap
  • RS Stock No. 244-175
  • Mfr. Part No. 141843 XNAE10-18
1 Pack of 20
PHP7,855.07(exc. VAT)
In Stock
Siemens SIRIUS 3 Phase Busbar, 690V, 50mm Pitch
  • RS Stock No. 755-2876
  • Mfr. Part No. 3RV1935-1A
Each
PHP2,262.53(exc. VAT)
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA5 250
  • RS Stock No. 269-7138
  • Mfr. Part No. 3VA9233-0JF60
Each (In a Pack of 3)
PHP2,989.067(exc. VAT)
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