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

33502 Products showing for Fuses & Circuit Breakers

213 of 999+
In Stock
ABB Tmax XT DIN Rail Plate for use with XT2
  • RS Stock No. 236-6872
  • Mfr. Part No. 1SDA080704R1 DIN50022 XT2 PLATE UL
Each
PHP1,825.32(exc. VAT)
In Stock
Eaton 21A DIN Rail Mount 6.3 x 32mm Fuse Block, 300V
  • RS Stock No. 233-0617
  • Mfr. Part No. BK-S-8002-1X-DIN
1 Box of 198
PHP48,299.33(exc. VAT)
In Stock
ABB RCBO, 25A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6969
  • Mfr. Part No. 2CSR255080R1254 DS201 C25 AC30
Each
PHP11,725.16(exc. VAT)
In Stock
ABB S402M MCB, 2P, 16A Curve B, 12V AC, 10 kA Breaking Capacity
  • RS Stock No. 140-308
  • Mfr. Part No. 2CCS572001R0165
Each
PHP4,662.91(exc. VAT)
Temporarily out of stock
Eaton 35A DIII Bottle Fuse, 500V
  • RS Stock No. 228-741
  • Mfr. Part No. 35D33 FUSE-D3 35A T GL/GG 500VAC E33
1 Pack of 5
PHP771.10(exc. VAT)
In Stock
Siemens SENTRON 3 Phase Busbar, 18mm Pitch
  • RS Stock No. 226-0815
  • Mfr. Part No. 5ST3646
Each (In a Pack of 10)
PHP810.49(exc. VAT)
Temporarily out of stock
Better World
ABB, XT2S MCCB 4P 25A, Fixed Mount
  • RS Stock No. 236-7480
  • Mfr. Part No. 1SDA067751R1 XT2S 160 TMG 25A FF
Each
PHP36,108.54(exc. VAT)
Temporarily out of stock
Lovato Single Phase Replacement cartridge, 40kA, DIN Rail Mount
  • RS Stock No. 248-5673
  • Mfr. Part No. SGX02DG600M2
Each
PHP3,456.91(exc. VAT)
In Stock
Schneider Electric Acti9 iC60 RCCB, 25A, 2 Pole, 300mA, Type C, 220 → 240V ac
  • RS Stock No. 110-284
  • Mfr. Part No. A9D50225
Each
PHP43,777.80(exc. VAT)
Temporarily out of stock
Schneider Electric 30A Fuse Holder, 3P, 600V ac
  • RS Stock No. 212-362
  • Mfr. Part No. DFCC3
1 Pack of 4
PHP22,205.85(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 16A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 874-4278
  • Mfr. Part No. 3VA1196-3ED36-0AA0
Each
PHP25,399.16(exc. VAT)
In Stock
Mersen 800A size 33 FF Square Body Fuse, aR, 700V
  • RS Stock No. 304-2215
  • Mfr. Part No. Z300080
Each
PHP18,255.83(exc. VAT)
In Stock
ABB Current Transformer for use with S4, S5, S6, S7, T1, T2, T3, T4, T5, T6, T7, XT2, XT3, XT4, XT7-XT7M, XXT7-XT7M
  • RS Stock No. 250-4511
  • Mfr. Part No. 1SDA037395R1
Each
PHP39,151.98(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 3P 600A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 358-355
  • Mfr. Part No. NLDL36600U53X
Each
PHP761,138.69(exc. VAT)
Temporarily out of stock
ABB Tmax XT Key Lock for use with XT3
  • RS Stock No. 237-6112
  • Mfr. Part No. 1SDA066610R1 KLC XT3 RONIS
Each
PHP7,444.20(exc. VAT)
Unavailable
Schneider Electric Compact Insulation Monitoring Module for use with Compact Nsx 400/630
  • RS Stock No. 221-1277
  • Mfr. Part No. LV432660
Each
PHP240,041.70(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Flexible Elbow Busbar Trunking, 100A, Canalis KN Series
  • RS Stock No. 211-0409
  • Mfr. Part No. KNA100DL4
Each
PHP17,070.62(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 4 channels
  • RS Stock No. 155-853
  • Mfr. Part No. 3VA2440-7HN42-0AA0
Each
PHP326,838.18(exc. VAT)
Temporarily out of stock
Siemens Auxiliary Release Shunt trip for use with 3VA1, 3VA20-26
  • RS Stock No. 275-968
  • Mfr. Part No. 3VA9988-0BL10
Each
PHP8,210.82(exc. VAT)
Temporarily out of stock
Schneider Electric Busbar Tap-Off Unit with Fuse Isolator, Canalis Series
  • RS Stock No. 244-992
  • Mfr. Part No. KSB630SE4
Each
PHP1,109,928.02(exc. VAT)
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