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

297 of 999+
Temporarily out of stock
ABB S801S MCB, 1P, 125A, UC-K, 250V DC, 50 kA Breaking Capacity
  • RS Stock No. 140-706
  • Mfr. Part No. 2CCS861001R1647
Each
PHP13,860.41(exc. VAT)
Temporarily out of stock
Siemens 32A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 210-6912
  • Mfr. Part No. 3NA6812-6
Each (In a Pack of 3)
PHP4,138.16(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4564
  • Mfr. Part No. 3VA2125-7JP32-0AA0
Each
PHP95,376.38(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4108 MCB, 1P, 8A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-885
  • Mfr. Part No. 5SJ4108-8HG42
Each
PHP4,743.22(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100/160/250 Circuit Breakers
  • RS Stock No. 260-9378
  • Mfr. Part No. C1047E100
Each
PHP167,900.58(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 7.5 kA, Plug In
  • RS Stock No. 230-845
  • Mfr. Part No. 112798 NZMH1-A40-SVE
Each
PHP40,394.31(exc. VAT)
Temporarily out of stock
Eaton 160A NH Fuse, 63 x 40 x 150mm, 400V ac
  • RS Stock No. 240-195
  • Mfr. Part No. 160NHG02BI-400
1 Pack of 3
PHP2,575.49(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3752
  • Mfr. Part No. 3VA2010-5HL32-0AA0
Each
PHP36,735.89(exc. VAT)
Temporarily out of stock
Schneider Electric Long Terminal Shield for use with Compact Inv/Ins 630B To 1600
  • RS Stock No. 221-1279
  • Mfr. Part No. LV433638
Each
PHP9,248.72(exc. VAT)
In Stock
Siemens 80A Slotted Tag Fuse, NH000, 690V
  • RS Stock No. 230-3018
  • Mfr. Part No. 3NE8720-1
Each (In a Pack of 10)
PHP3,414.592(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 4P 25A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 178-7917
  • Mfr. Part No. LV426705
Each
PHP85,297.26(exc. VAT)
Temporarily out of stock
ABB S203L MCB, 3P, 40A Curve D, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 203-081
  • Mfr. Part No. 2CDS243701R0401
Each
PHP20,866.72(exc. VAT)
Temporarily out of stock
SENTRON Shunt Trip Voltage Release for use with 3VA4/5/6 Series
  • RS Stock No. 263-701
  • Mfr. Part No. 3VA9978-0BL20
Each
PHP9,896.97(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 26A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 230-926
  • Mfr. Part No. 107657 NZMB2-S26-BT-CNA
Each
PHP42,886.88(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4870
  • Mfr. Part No. 3VA2580-7MQ32-0AA0
Each
PHP439,819.25(exc. VAT)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, 10kA, DIN Rail Mount
  • RS Stock No. 201-5265
  • Mfr. Part No. 1061383
Each
PHP10,048.50(exc. VAT)
In Stock
Wickmann PC Board Non Resettable Fuse, Radial 200mA, 250V ac
  • RS Stock No. 226-0535
  • Mfr. Part No. 3700200000
Each (In a Pack of 10)
PHP64.424(exc. VAT)
In Stock
RS PRO 40A British Standard Fuse, F2, 415V ac
  • RS Stock No. 521-2961
Each (In a Pack of 5)
PHP651.35(exc. VAT)
Temporarily out of stock
Siemens SENTRON Electronic Circuit Breaker 630A 3VA2, 4 channels
  • RS Stock No. 160-033
  • Mfr. Part No. 3VA2463-5HN42-0BH0
Each
PHP315,033.60(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3963
  • Mfr. Part No. 3VA2110-6JQ42-0AA0
Each
PHP140,590.43(exc. VAT)
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