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

316 of 999+
Temporarily out of stock
Siemens SENTRON 5SY6 MCB, 4P, 25A Curve B, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-337
  • Mfr. Part No. 5SY6625-6
Each
PHP9,465.21(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 3P 32A, Breaking Capacity 70 kA, Clip-On
  • RS Stock No. 178-7767
  • Mfr. Part No. LV426502
Each
PHP22,475.23(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 50A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 214-771
  • Mfr. Part No. C11F44V050L
Each
PHP141,509.06(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-543
  • Mfr. Part No. 3VA6580-5JT36-2AA0
Each
PHP550,564.86(exc. VAT)
Temporarily out of stock
ABB, XT2S MCCB 3P 2.5A, Fixed Mount
  • RS Stock No. 236-7354
  • Mfr. Part No. 1SDA067542R1 XT2S 160 TMD 2.5A FF
Each
PHP26,870.99(exc. VAT)
Temporarily out of stock
Siemens 200A Tag Fuse, 134mm, 1.25kV
  • RS Stock No. 608-360
  • Mfr. Part No. 3NB1126-1KK15
1 Pack of 3
PHP39,123.32(exc. VAT)
In Stock
Mersen 100A Bolted Tag Fuse, A4, 460 V dc, 690V ac, 94mm
  • RS Stock No. 178-1126
  • Mfr. Part No. T1006612 / BTCP69V100
Each (In a Pack of 10)
PHP1,680.134(exc. VAT)
In Stock
Eaton RCCB, 40A, 4 Pole, 300mA, Type B
  • RS Stock No. 183-3551
  • Mfr. Part No. 167901 FRCDM-40/4/03-S/B
Each
PHP78,440.72(exc. VAT)
Temporarily out of stock
Better World
Siemens RCBO, 40A Current Rating, 2P Poles, 300mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8779
  • Mfr. Part No. 5SU1654-6KK40
Each
PHP11,695.58(exc. VAT)
Temporarily out of stock
Siemens SIVACON S4 Support for use with SIVACON S4
  • RS Stock No. 626-471
  • Mfr. Part No. 8PQ4000-0BA11
Each
PHP4,218.99(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 50A Curve C, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 248-982
  • Mfr. Part No. 190785 FAZ-C50/2-NA
Each
PHP15,102.05(exc. VAT)
Temporarily out of stock
Schneider Electric MCCB 4P, Fixed Mount
  • RS Stock No. 178-7898
  • Mfr. Part No. LV426961
Each
PHP3,664.02(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 600A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 249-865
  • Mfr. Part No. 3VA6460-8JT31-0AA0
Each
PHP383,416.01(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 4P, 300mA Curve C, 400V AC, 70 kA Breaking Capacity
  • RS Stock No. 610-681
  • Mfr. Part No. 5SY8614-7
Each
PHP17,829.81(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 5m, 100A, Canalis KS Series
  • RS Stock No. 211-0453
  • Mfr. Part No. KSA100ED45020
Each
PHP51,760.54(exc. VAT)
Temporarily out of stock
Siemens SENTRON Insulation accessory for use with 3VA13/14, 3VA23/24
  • RS Stock No. 158-043
  • Mfr. Part No. 3VA9481-0WJ40
Each
PHP2,574.91(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 3 channels
  • RS Stock No. 156-716
  • Mfr. Part No. 3VA2340-8KP32-0AA0
Each
PHP283,308.77(exc. VAT)
Temporarily out of stock
ABB SU200 M MCB, 4P, 35A Curve K, 480V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-246
  • Mfr. Part No. 2CDS274337R0547
Each
PHP42,126.03(exc. VAT)
Temporarily out of stock
Siemens 500A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 230-3011
  • Mfr. Part No. 3NE8334-0MK
Each (In a Pack of 3)
PHP16,057.32(exc. VAT)
In Stock
Eaton 4A Bolted Tag Fuse, A2, 460 V dc, 660V ac, 73mm
  • RS Stock No. 181-8743
  • Mfr. Part No. TIA4
Each
PHP1,515.69(exc. VAT)
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