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

1618 of 999+
Temporarily out of stock
ABB RCBO, 20A Current Rating, 1P Poles, Type C
  • RS Stock No. 237-5248
  • Mfr. Part No. 2CSR275151R0204
Each
PHP11,300.14(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7217
  • Mfr. Part No. 1SDA067250R1 TMD 32-320 XT2 4p
Each
PHP20,157.47(exc. VAT)
Temporarily out of stock
ABB Tmax XT Front Terminal for use with Tmax XT
  • RS Stock No. 237-6278
  • Mfr. Part No. 1SDA067202R1 FC CuAl 2x150 XT4 8PCS
Each
PHP17,039.11(exc. VAT)
Temporarily out of stock
Siemens SENTRON Link Module for use with 5SL4
  • RS Stock No. 209-6557
  • Mfr. Part No. 5SM2333-6
Each
PHP11,086.87(exc. VAT)
Temporarily out of stock
Siemens ALPHA Mounting Kit for use with 3VL molded-case circuit breakers
  • RS Stock No. 211-3840
  • Mfr. Part No. 8GK4703-4KK13
Each
PHP14,187.81(exc. VAT)
Temporarily out of stock
HENSEL ENYSTAR Distribution Board, 6 Way, 63 A
  • RS Stock No. 117-609
  • Mfr. Part No. FP VN 0601 GB
Each
PHP126,050.38(exc. VAT)
Temporarily out of stock
Better World
ABB, XT2V MCCB 3P 25A, Fixed Mount
  • RS Stock No. 236-6525
  • Mfr. Part No. 1SDA067987R1 XT2V 160 Ekip LSIG 25A FF
Each
PHP143,756.38(exc. VAT)
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA52 250
  • RS Stock No. 269-7159
  • Mfr. Part No. 3VA9234-0JK11
Each (In a Pack of 4)
PHP4,711.72(exc. VAT)
In Stock
Socomec 250A NH Fuse, NH2, 690V
  • RS Stock No. 252-5353
  • Mfr. Part No. 68730250
Each (In a Pack of 3)
PHP2,169.077(exc. VAT)
Temporarily out of stock
ABB Tmax XT Connector Plug Socket for use with Tmax XT
  • RS Stock No. 237-6066
  • Mfr. Part No. 1SDA066411R1 XT1..4
Each
PHP2,779.83(exc. VAT)
Temporarily out of stock
ABB 6A Tag Fuse, 125 x 30 x 60mm, 500V
  • RS Stock No. 251-3439
  • Mfr. Part No. 1SCA022627R1800
1 Box of 3
PHP2,729.98(exc. VAT)
Temporarily out of stock
Eaton Eaton xComfort Installaton Accessory for use with Basic Device, Installation Distribution Boards, KLV for Projects
  • RS Stock No. 125-018
  • Mfr. Part No. 178879 KLV-SF2-4PR
Each
PHP3,211.80(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-243
  • Mfr. Part No. 3VA6440-7JT41-2AA0
Each
PHP510,976.97(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9690
  • Mfr. Part No. 3VA11106GE460AA0
Each
PHP34,440.44(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-229
  • Mfr. Part No. 3VA6140-8HN41-2AA0
Each
PHP118,763.66(exc. VAT)
Temporarily out of stock
Siemens SENTRON Cover
  • RS Stock No. 277-0807
  • Mfr. Part No. 3WA9111-0AS13
Each
PHP11,346.72(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7881
  • Mfr. Part No. C25F34V100
Each
PHP194,431.72(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4548
  • Mfr. Part No. 3VA2125-7HK36-0AA0
Each
PHP62,969.07(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4742
  • Mfr. Part No. 3VA2163-7HM42-0AA0
Each
PHP94,607.11(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7700
  • Mfr. Part No. C12H4TM160B
Each
PHP97,334.28(exc. VAT)
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