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

226 of 999+
Eaton 315A British Standard Fuse, FM, 690 V ac, 500V dc, 80 → 85mm
  • RS Stock No. 156-9106
  • Mfr. Part No. 315FM
Each
PHP5,196.13(exc. VAT)
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 237-6290
  • Mfr. Part No. 1SDA067234R1
Each
PHP16,455.12(exc. VAT)
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 3 channels
  • RS Stock No. 157-166
  • Mfr. Part No. 3VA2216-7MN32-0AA0
Each
PHP102,552.02(exc. VAT)
ABB Tmax XT Auxiliary Contact for use with Tamx XT
  • RS Stock No. 236-6882
  • Mfr. Part No. 1SDA104815R1 AUP-I XT5-6 P/W 3 250V
Each
PHP8,603.72(exc. VAT)
Siemens SENTRON Nut Keeper Kit for use with 3VA5
  • RS Stock No. 269-7149
  • Mfr. Part No. 3VA9233-0QA00
Each (In a Pack of 3)
PHP3,097.637(exc. VAT)
Wurth Elektronik PA Base Mount Fuse Holder Cover for 5 x 20mm Fuse
  • RS Stock No. 893-0596
  • Mfr. Part No. 696122003001
Each (In a Pack of 10)
PHP12.375(exc. VAT)
Miniature circuit breaker, 8 A, 1p
  • RS Stock No. 611-267
  • Mfr. Part No. PLSM-C8-MW
Each
PHP1,934.13(exc. VAT)
Schneider Electric CompacT Cover Frame for use with ComPacT NS630b
  • RS Stock No. 654-978
  • Mfr. Part No. C100N4WM
Each
PHP264,031.73(exc. VAT)
Phoenix Contact Surge Protector, 10kA, DIN Rail Mount
  • RS Stock No. 201-5320
  • Mfr. Part No. 1065313
Each
PHP9,923.70(exc. VAT)
Better World
Schneider Electric Surge Suppressor Unit, 127 → 240V ac
  • RS Stock No. 210-9822
  • Mfr. Part No. LA4FRCP
Each
PHP7,757.10(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 20A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-246
  • Mfr. Part No. 3VA5120-6ED31-1AA0
Each
PHP32,778.14(exc. VAT)
Schneider Electric RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti9 Range
  • RS Stock No. 212-166
  • Mfr. Part No. A9D07616
Each
PHP14,195.91(exc. VAT)
Schneider Electric Acti9 iID RCCB, 63A, 2 Pole, 300mA, Type A, 220 → 240V ac
  • RS Stock No. 654-799
  • Mfr. Part No. A9R25263
Each
PHP33,131.74(exc. VAT)
HENSEL ENYSTAR Distribution Board, 63 A
  • RS Stock No. 117-725
  • Mfr. Part No. KV PC 8109
Each
PHP3,879.74(exc. VAT)
RS PRO PC Board Non Resettable Fuse, Radial 315mA, 250V ac
  • RS Stock No. 767-5197
Each (In a Pack of 10)
PHP19.545(exc. VAT)
Eaton IZMX/INX Electronic Circuit Breaker 2.5kA , 3 channels
  • RS Stock No. 132-842
  • Mfr. Part No. 183600 IZMX40N3-P25W-1
Each
PHP1,588,797.19(exc. VAT)
ABB System Pro M Compact S200 M UC MCB, 1P, 500mA, Type Z, 230V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 202-879
  • Mfr. Part No. 2CDS271061R0158
Each
PHP7,968.25(exc. VAT)
ABB RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 914-4055
  • Mfr. Part No. 2CSR255051R1205 DSE201 B20 AC30 - N Blue
Each
PHP5,769.04(exc. VAT)
Eaton xEffect FAZ MCB, 1P, 35A Curve B, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 247-889
  • Mfr. Part No. 132748 FAZ-B35/1-RT
Each
PHP2,939.77(exc. VAT)
Schneider Electric ComPacT Cover Frame for use with ComPacT NS630b
  • RS Stock No. 655-146
  • Mfr. Part No. C100H3WM
Each
PHP202,545.85(exc. VAT)
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