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

33476 Products showing for Fuses & Circuit Breakers

76 of 999+
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 400A, Fixed Mount
  • RS Stock No. 232-0087
  • Mfr. Part No. 1SDA054349R1 T5H400 FF PR221-LS 400A
Each
PHP72,371.55(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 200A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 210-1731
  • Mfr. Part No. 3VA2220-5MN32-0AA0
Each
PHP79,620.01(exc. VAT)
Littelfuse SMD Non Resettable Fuse 3A, 32V ac/dc
  • RS Stock No. 541-3619
  • Mfr. Part No. 0466003.NR
Each (In a Pack of 10)
PHP35.442(exc. VAT)
Schurter PC Board Non Resettable Fuse, Axial 10A, 125V ac/dc
  • RS Stock No. 173-9682
  • Mfr. Part No. 7010.7150.13
Each (In a Bag of 100)
PHP73.315(exc. VAT)
Schneider Electric K Residual Current Circuit Breaker, 40A, 2P Pole, 100mA, Type AC, 220 → 240V ac
  • RS Stock No. 588-937
  • Mfr. Part No. A9KR15240
Each
PHP2,045.21(exc. VAT)
ABB Tmax XT Handle, Lockable for use with Circuit Breaker
  • RS Stock No. 231-9359
  • Mfr. Part No. 1SDA104843R1 RHE XT5 F/P
Each
PHP13,095.07(exc. VAT)
Eaton 250A British Standard Fuse, FM, 690 V ac, 500V dc, 80 → 85mm
  • RS Stock No. 156-9083
  • Mfr. Part No. 250FM
Each
PHP2,916.40(exc. VAT)
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-481
  • Mfr. Part No. KV 9236
Each
PHP14,770.25(exc. VAT)
Eaton RCD, 25A, 2 Pole, 30mA, Type G
  • RS Stock No. 922-8682
  • Mfr. Part No. 235449 PFIM-25/2/003-G-MW
Each
PHP11,615.16(exc. VAT)
Better World
Schneider Electric Acti9 1 Phase Busbar, 250 V, 440 V, 9mm Pitch
  • RS Stock No. 238-4081
  • Mfr. Part No. A9XPK714
Each
PHP40,137.19(exc. VAT)
Schneider Electric Acti 9 Earth & Neutral Terminal Bar for use with Screw Support Busbar
  • RS Stock No. 187-807
  • Mfr. Part No. 99217
Each
PHP3,215.22(exc. VAT)
ABB PS2 2 Phase Busbar, 400V
  • RS Stock No. 231-9637
  • Mfr. Part No. 2CDL220001R1648 PS2/48/16 H
1 Box of 1
PHP8,335.71(exc. VAT)
Eaton 700A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 182-1773
  • Mfr. Part No. 170M5813D
Each
PHP26,913.21(exc. VAT)
Eaton 800A Bolted Tag Fuse, C3, 250 V dc, 550V ac, 134.5mm
  • RS Stock No. 182-1417
  • Mfr. Part No. GF800
Each
PHP19,953.97(exc. VAT)
RS PRO PC Board Non Resettable Fuse, Radial 315mA, 250V ac
  • RS Stock No. 611-0709
Each (In a Pack of 10)
PHP42.315(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 1.2kA, Breaking Capacity 34 kA, Fixed Mount
  • RS Stock No. 127-817
  • Mfr. Part No. 179327 N4-4-1200-S1-PV-NA
Each
PHP584,736.40(exc. VAT)
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 630A, Breaking Capacity 20 kA, Fixed Mount
  • RS Stock No. 232-0088
  • Mfr. Part No. 1SDA054396R1 T5N630 FF PR221-LS 630A
Each
PHP102,113.40(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 1kA, Breaking Capacity 31 kA, Fixed Mount
  • RS Stock No. 428-721
  • Mfr. Part No. C100H320FM
Each
PHP766,946.38(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 60A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-454
  • Mfr. Part No. 3VA5160-6ED41-0AA0
Each
PHP37,278.69(exc. VAT)
Schneider Electric, Powerpact4 MCCB 1P 30A, Breaking Capacity 25 kA, Panel Mount
  • RS Stock No. 517-4780
  • Mfr. Part No. MGP0301L2
Each
PHP8,728.22(exc. VAT)
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