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

1634 of 999+
Eaton PC Board Non Resettable Fuse, Radial 1.6A, 300V ac
  • RS Stock No. 769-3296
  • Mfr. Part No. SR-5H-1-6A-BK
Each (In a Pack of 5)
PHP59.388(exc. VAT)
Littelfuse PC Board Non Resettable Fuse, Radial 80mA, 277V ac/dc
  • RS Stock No. 820-7218
  • Mfr. Part No. 0305.080H
Each
PHP995.09(exc. VAT)
ABB MCCB Molded Case Circuit Breaker 4P 630A, Fixed Mount
  • RS Stock No. 250-4155
  • Mfr. Part No. 1SDA054425R1
Each
PHP361,266.40(exc. VAT)
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0844
  • Mfr. Part No. 3WA9111-0AX31
Each
PHP12,740.99(exc. VAT)
Littelfuse SMD Non Resettable Fuse 2.5A, 125V
  • RS Stock No. 738-2860P
  • Mfr. Part No. 015402.5DRT
Each (Supplied on a Reel)
PHP112.112(exc. VAT)
Better World
Eaton 200A Tag Fuse, 2XL, 1.5kV, 205mm
  • RS Stock No. 282-6510
  • Mfr. Part No. PV-160A-2XL-U-15
Each
PHP32,998.20(exc. VAT)
Siemens Fuse Holder Adapter Sleeve
  • RS Stock No. 202-7248
  • Mfr. Part No. 5SH5100
Each
PHP886.48(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - LELK1 Single Pole Panel Mount, 50A Current Rating
  • RS Stock No. 275-0395
  • Mfr. Part No. LELK1-1REC4-51-50.0-AK-01-V
1 Box of 5
PHP26,281.41(exc. VAT)
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0793
  • Mfr. Part No. 3WA9111-0AN84
1 Set
PHP20,547.85(exc. VAT)
Siemens SENTRON Wire Connector for use with 3VA5/6 400/600
  • RS Stock No. 269-7183
  • Mfr. Part No. 3VA9374-0JF60
Each (In a Pack of 4)
PHP3,666.62(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-489
  • Mfr. Part No. 3VA6580-6KQ46-2AA0
Each
PHP740,440.09(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3820
  • Mfr. Part No. 3VA2040-8KQ36-0AA0
Each
PHP155,706.96(exc. VAT)
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-882
  • Mfr. Part No. 3VA5212-6EF41-0AA0
Each
PHP175,299.12(exc. VAT)
Eaton IZMX/INX Electronic Circuit Breaker 2kA , 3 channels , Withdrawable
  • RS Stock No. 132-841
  • Mfr. Part No. 183599 IZMX40N3-P20W-1
Each
PHP1,290,028.32(exc. VAT)
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 207-2773
  • Mfr. Part No. 2907845
Each
PHP8,901.14(exc. VAT)
Eaton xComfort KLV Distribution Board Enclosure
  • RS Stock No. 124-790
  • Mfr. Part No. 178816 KLV-24UPS-F
Each
PHP9,694.01(exc. VAT)
Better World
Siemens, 0AA0 MCCB 4P 160A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 211-5994
  • Mfr. Part No. 3VA1116-6EF42-0AA0
Each
PHP74,742.11(exc. VAT)
Siemens Fuse Holder Diazed Adapter Screw
  • RS Stock No. 202-7195
  • Mfr. Part No. 5SH317
Each (In a Pack of 25)
PHP147.117(exc. VAT)
ABB Tmax XT Plug In Unit for use with Tmax XT
  • RS Stock No. 236-6639
  • Mfr. Part No. 1SDA068191R1 XT2 P FP HR
Each
PHP24,274.54(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 250-091
  • Mfr. Part No. 3VA6580-5HM36-2AA0
Each
PHP429,601.87(exc. VAT)
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