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

270 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3782
  • Mfr. Part No. 3VA2040-7JQ46-0AA0
Each
PHP171,289.54(exc. VAT)
Temporarily out of stock
ABB RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 181-4368
  • Mfr. Part No. 2CSA255103R1165 DS-ARC1 B16 A30
Each
PHP21,078.05(exc. VAT)
Temporarily out of stock
Eaton 80A Bolted Tag Fuse, 415V ac, 92mm
  • RS Stock No. 181-8612
  • Mfr. Part No. 80MJ31-7
Each (In a Box of 10)
PHP4,160.767(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 210-1728
  • Mfr. Part No. 3VA2140-6HL46-0AA0
Each
PHP66,702.88(exc. VAT)
In Stock
Better World
Schneider Electric Compact NSX Connecting Terminals for use with Compact NSX circuit breaker
  • RS Stock No. 211-2640
  • Mfr. Part No. LV429248
Each
PHP15,510.47(exc. VAT)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-283
  • Mfr. Part No. KV 1612
Each
PHP5,104.93(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 1A Curve C, 500V DC
  • RS Stock No. 772-1511
  • Mfr. Part No. A9N61521
Each
PHP9,783.03(exc. VAT)
Temporarily out of stock
Hager BF Series RCCB, 25A, 3 Pole, 300mA, Type A-HI, 230/400V
  • RS Stock No. 597-977
  • Mfr. Part No. BF325
Each
PHP31,249.75(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 1A, 125V ac
  • RS Stock No. 769-3719
  • Mfr. Part No. 0451001.NRL
Each (In a Pack of 10)
PHP82.80(exc. VAT)
Temporarily out of stock
ABB Tmax XT Flexible Bar for use with XT1
  • RS Stock No. 237-6174
  • Mfr. Part No. 1SDA066959R1 FB XT1 6PCS
Each
PHP3,270.71(exc. VAT)
In Stock
Siemens 80A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 396-196
  • Mfr. Part No. 3NE1820-0
Each (In a Pack of 3)
PHP7,154.173(exc. VAT)
Temporarily out of stock
Bourns Surface Mount Fuse 2.5A, 65V dc
  • RS Stock No. 245-9255
  • Mfr. Part No. SF-1206SA250M-2
Each (On a Reel of 3000)
PHP35.372(exc. VAT)
Temporarily out of stock
Schneider Electric Busbar Tap-Off Unit with Fuse, Canalis Series
  • RS Stock No. 212-225
  • Mfr. Part No. KBC16DCF226
1 Pack of 10
PHP32,888.04(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 7A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-725
  • Mfr. Part No. 3VA5107-1MH31-0AA0
Each
PHP34,278.32(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 3P, 32A, Type A, 400V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 610-428
  • Mfr. Part No. 5SY4332-5
Each
PHP15,701.97(exc. VAT)
Temporarily out of stock
Mersen 20A Offset Tag Fuse, 9.4 x 47mm, 415V ac
  • RS Stock No. 209-6428
  • Mfr. Part No. A1036978 / BMD42V20
Each (In a Pack of 10)
PHP397.635(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type AC, Acti9 Range
  • RS Stock No. 276-8718
  • Mfr. Part No. A9D07216
Each
PHP41,140.21(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 3.5A, 125V
  • RS Stock No. 738-2974P
  • Mfr. Part No. 045203.5MRL
Each (Supplied on a Reel)
PHP110.936(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 4P, 2A, Type A, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-625
  • Mfr. Part No. 5SY4602-5
Each
PHP16,729.20(exc. VAT)
Temporarily out of stock
Siemens RCCB, 25A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 269-9755
  • Mfr. Part No. 5SV3322-6KK60
Each
PHP36,776.80(exc. VAT)
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