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

1626 of 999+
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with Terminal Block
  • RS Stock No. 629-233
  • Mfr. Part No. 8GK4100-8KK12
Each
PHP19,003.79(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 25A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 271-9572
  • Mfr. Part No. 3VA10252ED460AA0
Each
PHP26,762.85(exc. VAT)
Temporarily out of stock
ABB SMISSLINE Busbar for Smissline TP
  • RS Stock No. 246-2347
  • Mfr. Part No. 2CCF800258R0001
Each
PHP1,609.02(exc. VAT)
Temporarily out of stock
Better World
Eaton 125A Tag Fuse, 205 x 78 x 89mm, 1.5kV, 167mm
  • RS Stock No. 282-6217
  • Mfr. Part No. PV-125A-2XL-3BU-15
Each
PHP31,131.77(exc. VAT)
Temporarily out of stock
Lovato 2 Phase Surge Protector, 50kA
  • RS Stock No. 216-8301
  • Mfr. Part No. SG22PA300R
Each
PHP16,690.01(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - AP17 2 Pole Panel Mount, 2A Current Rating
  • RS Stock No. 275-0172
  • Mfr. Part No. AP17-1-61F-202
1 Box of 5
PHP299,539.85(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-5166
  • Mfr. Part No. 3VA2163-5HN42-0AA0
Each
PHP61,652.32(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 110A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-184
  • Mfr. Part No. 3VA5111-4EC31-1AA0
Each
PHP35,478.42(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 260-7927
  • Mfr. Part No. C25H4TM250
Each
PHP184,017.15(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 100A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-497
  • Mfr. Part No. 3VA5110-6ED21-1AA0
Each
PHP35,328.37(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9755
  • Mfr. Part No. 3VA1116-3FD46-0AA0
Each
PHP63,235.08(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3964
  • Mfr. Part No. 3VA2110-6JQ46-0AA0
Each
PHP155,706.96(exc. VAT)
Temporarily out of stock
Eaton xEffect - FRCmM RCCB, 40A, 4 Pole, 300mA, 240/415V ac
  • RS Stock No. 123-573
  • Mfr. Part No. 170304 FRCMM-40/4/03-G/A
Each
PHP20,334.76(exc. VAT)
Temporarily out of stock
Littelfuse SMD Non Resettable Fuse 250mA, 125V ac/dc
  • RS Stock No. 820-7142
  • Mfr. Part No. 0440.250WR
Each (In a Pack of 100)
PHP43.956(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3689
  • Mfr. Part No. 3VA2025-7KP46-0AA0
Each
PHP155,581.56(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 40A, Fixed Mount
  • RS Stock No. 260-7633
  • Mfr. Part No. C11H4TM040L
Each
PHP56,588.00(exc. VAT)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0319
  • Mfr. Part No. 8GK1081-3KK30
Each
PHP85,894.14(exc. VAT)
Temporarily out of stock
Eaton IZMX16H3-P10W-1 Electronic Circuit Breaker 1kA , DIN Rail
  • RS Stock No. 127-747
  • Mfr. Part No. 183481 IZMX16H3-P10W-1
Each
PHP607,406.09(exc. VAT)
Temporarily out of stock
Siemens SENTRON 2 Phase Busbar, 1mm Pitch
  • RS Stock No. 226-0820
  • Mfr. Part No. 5ST3664-0HG
Each (In a Pack of 10)
PHP1,199.32(exc. VAT)
Temporarily out of stock
ABB Tmax XT Connector Plug Socket for use with Tmax XT
  • RS Stock No. 237-6068
  • Mfr. Part No. 1SDA066415R1 SOR2-C XT2-4 W
Each
PHP1,688.96(exc. VAT)
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