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

139 of 999+
Temporarily out of stock
ABB System Pro M Compact S200 MCB, 3P, 25A, Type Z, 400V AC, 110V DC, 10 kA Breaking Capacity
  • RS Stock No. 203-721
  • Mfr. Part No. 2CDS253001R0518
Each
PHP22,956.93(exc. VAT)
Temporarily out of stock
Eaton RCBO, 20A Current Rating, 2P Poles, 100mA Trip Sensitivity, Type A, Type C, FRBdM Range
  • RS Stock No. 121-032
  • Mfr. Part No. 168286 FRBDM-C20/1N/01-G/A
Each
PHP13,029.76(exc. VAT)
Temporarily out of stock
Eaton Eaton Moeller 1 Phase Busbar, 1000V, 26.4mm Pitch
  • RS Stock No. 123-042
  • Mfr. Part No. 171137 Z-BB/UL25/1P1MU+AUX/37
Each
PHP10,952.46(exc. VAT)
Temporarily out of stock
Eaton SMD Non Resettable Fuse 250mA, 32 V ac, 63V dc
  • RS Stock No. 849-5712
  • Mfr. Part No. TR-3216FF250-R
Each
PHP43.95(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3778
  • Mfr. Part No. 3VA2116-6KP42-0AA0
Each
PHP166,129.11(exc. VAT)
In Stock
ABB FH 200 RCCB, 40A, 2 Pole, Type AC
  • RS Stock No. 191-9455
  • Mfr. Part No. 2CSF202024R1400 FH202 S AC-40/0,03
Each
PHP4,244.60(exc. VAT)
Temporarily out of stock
Rittal SZ Busbar
  • RS Stock No. 230-4854
  • Mfr. Part No. 2364000
Each
PHP7,336.00(exc. VAT)
Currently unavailable
RS PRO 32A Slotted Tag Fuse, A1, 250 V dc, 415V ac, 44.5mm
  • RS Stock No. 221-3700
Each (In a Pack of 10)
PHP468.257(exc. VAT)
In Stock
Littelfuse 25A White Blade Car Fuse, 32V dc
  • RS Stock No. 787-4154P
  • Mfr. Part No. 0287025.PXCN
Each (Supplied in a Bag)
PHP17.127(exc. VAT)
Limited stock
Limitor Thermal Fuse +151°C 2 A, 250V ac
  • RS Stock No. 176-9407
  • Mfr. Part No. SM 146 A0
Each (In a Pack of 5)
PHP54.048(exc. VAT)
Temporarily out of stock
ABB Tmax XT Key Lock for use with XT1, XT3
  • RS Stock No. 237-6118
  • Mfr. Part No. 1SDA066626R1 MOL-S XT1-XT3 RONIS
Each
PHP6,568.70(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 6A Curve B, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 246-055
  • Mfr. Part No. 176066 FAZ-B6/1-DC
Each
PHP7,917.58(exc. VAT)
In Stock
ABB Tmax XT Changeover Contact for use with Circuit Breaker
  • RS Stock No. 232-0184
  • Mfr. Part No. 1SDA066433R1 AUX-C 2Q+1SY 250V XT1..XT4
Each
PHP7,501.90(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 3P, 40A Curve B, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-657
  • Mfr. Part No. 2CCS863001R0405
Each
PHP23,995.57(exc. VAT)
In Stock
Littelfuse Fuse Holder Water Proof Holder
  • RS Stock No. 738-2784
  • Mfr. Part No. FHAC0001ZXJ
Each
PHP296.21(exc. VAT)
Temporarily out of stock
ABB, XT2N MCCB 4P 100A, Fixed Mount
  • RS Stock No. 237-6222
  • Mfr. Part No. 1SDA067039R1 XT2N 160 TMA 100A FF
Each
PHP34,980.43(exc. VAT)
Temporarily out of stock
Schneider Electric, Compact MCCB 4P 800A, Fixed Mount
  • RS Stock No. 247-1811
  • Mfr. Part No. 33469
Each
PHP252,202.76(exc. VAT)
In Stock
Eaton 40A British Standard Fuse, A3, 550V ac, 73.5mm
  • RS Stock No. 415-317
  • Mfr. Part No. BAO40
Each
PHP860.30(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 80A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-693
  • Mfr. Part No. 3VA5180-1MU31-0AA0
Each
PHP37,503.25(exc. VAT)
Temporarily out of stock
TE Connectivity 2204899 Busbar Connector, 48V
  • RS Stock No. 201-3501
  • Mfr. Part No. 2204899-1
Each
PHP974.57(exc. VAT)
1
139
1676
Results per page

Related links