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

235 of 999+
Temporarily out of stock
Eaton xComfort KLV Distribution Board Enclosure
  • RS Stock No. 124-779
  • Mfr. Part No. 178808 KLV-24HWP-F
Each
PHP11,766.02(exc. VAT)
Temporarily out of stock
Siemens ALPHA Busbar
  • RS Stock No. 629-038
  • Mfr. Part No. 8GK9736-0KK50
Each
PHP17,389.57(exc. VAT)
Temporarily out of stock
6A Tag Fuse, 14 x 50mm, 500V
  • RS Stock No. 262-774
  • Mfr. Part No. 6D16R
1 Pack of 10
PHP3,503.74(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 150A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-919
  • Mfr. Part No. 3VA5215-5GD41-0AA0
Each
PHP114,385.88(exc. VAT)
In Stock
ABB DDA200 RCCB, 40A, 2 Pole, 30mA, 230/400V
  • RS Stock No. 289-1617
  • Mfr. Part No. 2CSB202001R3400
Each
PHP7,514.92(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 55 kA
  • RS Stock No. 209-6764
  • Mfr. Part No. 3VA1116-5EF42-0AA0
Each
PHP89,721.73(exc. VAT)
Temporarily out of stock
ABB S804C MCB, 4P, 24A Curve K, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-496
  • Mfr. Part No. 2CCS884001R0517
Each
PHP19,160.81(exc. VAT)
Temporarily out of stock
Eaton IZMX40B3-V40F-1 Electronic Circuit Breaker 4kA , Fixed
  • RS Stock No. 132-864
  • Mfr. Part No. 183709 IZMX40B3-V40F-1
Each
PHP1,953,084.88(exc. VAT)
Temporarily out of stock
ABB, Tmax MCCB 3P 800A, Fixed Mount
  • RS Stock No. 237-6018
  • Mfr. Part No. 1SDA062675R1 T7L 800A PR232-LSI FF
Each
PHP364,938.56(exc. VAT)
Temporarily out of stock
Siemens SIRIUS Adapter for use with Circuit Breaker
  • RS Stock No. 156-518
  • Mfr. Part No. 3RA2932-1CA00
Each
PHP2,552.71(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 4P 630A, Fixed Mount
  • RS Stock No. 250-4145
  • Mfr. Part No. 1SDA054416R1
Each
PHP318,707.87(exc. VAT)
Limited stock
Limitor Thermal Fuse +55°C 2.5 A, 250V ac
  • RS Stock No. 204-7382
  • Mfr. Part No. Q82 A 55 05 100
Each
PHP324.36(exc. VAT)
Temporarily out of stock
Siemens 400A NH Fuse, NH1, 1kV, 110mm
  • RS Stock No. 397-418
  • Mfr. Part No. 3NE3232-0B
Each (In a Pack of 3)
PHP16,873.70(exc. VAT)
Limited stock
ABB FH200 RCCB, 25A, 2 Pole, 30mA, Type AC
  • RS Stock No. 186-3455
  • Mfr. Part No. 2CSF202002R1250 FH202 AC-25/0,03
Each
PHP3,371.62(exc. VAT)
In Stock
Mersen 900A size 33 FF Square Body Fuse, aR, 700V
  • RS Stock No. 304-2221
  • Mfr. Part No. A300081
Each
PHP25,626.24(exc. VAT)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-311
  • Mfr. Part No. KV PC 9336
Each
PHP18,255.21(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 260-7979
  • Mfr. Part No. C25R42D250
Each
PHP221,932.06(exc. VAT)
In Stock
ABB System Pro M Compact S200M MCB, 2P, 32A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-053
  • Mfr. Part No. 2CDS272001R0537
Each
PHP20,294.67(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 3 channels
  • RS Stock No. 156-714
  • Mfr. Part No. 3VA2340-6JP32-0AA0
Each
PHP225,024.04(exc. VAT)
Temporarily out of stock
Bourns Single, Three Phase Surge Protector, 50kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 287-9619
  • Mfr. Part No. 1250A-1S-400
Each (In a Box of 100)
PHP6,517.472(exc. VAT)
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