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

310 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB 3P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-925
  • Mfr. Part No. 3VA6560-5KL36-0AA0
Each
PHP388,547.77(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-916
  • Mfr. Part No. 3VA6115-6HM31-2AA0
Each
PHP154,686.00(exc. VAT)
Temporarily out of stock
Siemens 5SV3 RCCB, 125A, 4 Pole, 500mA, Type A, 230/400V
  • RS Stock No. 282-4687
  • Mfr. Part No. 5SV3745-8
Each
PHP120,128.71(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 600A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-736
  • Mfr. Part No. 3VA6460-6KQ31-0AA0
Each
PHP469,439.05(exc. VAT)
Temporarily out of stock
Eaton 125A Neutral Link x 75mm
  • RS Stock No. 241-382
  • Mfr. Part No. 1319466 QSAN100/125A
Each
PHP7,177.14(exc. VAT)
In Stock
Siemens SIRIUS Cover for use with 3RB2, 3RT1, 3RW407, 3RW444
  • RS Stock No. 218-2896
  • Mfr. Part No. 3RT1966-4EA2
Each
PHP1,823.54(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-913
  • Mfr. Part No. 3VA6560-5HM42-2AA0
Each
PHP392,213.32(exc. VAT)
In Stock
Siemens 25A Diazed Fuse, gG, 690/600V ac/dc
  • RS Stock No. 167-693
  • Mfr. Part No. 5SD8025
1 Pack of 5
PHP10,173.67(exc. VAT)
Temporarily out of stock
Eaton Fuse Holder Fuse Holder
  • RS Stock No. 261-374
  • Mfr. Part No. SD2-D
1 Pack of 3
PHP6,324.73(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-568
  • Mfr. Part No. 3VA6210-6JT31-0AA0
Each
PHP203,071.19(exc. VAT)
Temporarily out of stock
ABB 630A Tag Fuse, 200 x 68 x 119mm, 500V
  • RS Stock No. 251-3496
  • Mfr. Part No. 1SCA022627R7590
Each
PHP12,086.39(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Circuit-Breaker Electronic Circuit Breaker 2.5kA IZMX/INX, 4 channels , Withdrawable
  • RS Stock No. 132-727
  • Mfr. Part No. 183784 IZMX40B4-P25W-1
Each
PHP1,802,258.20(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 320A, Fixed Mount
  • RS Stock No. 250-4103
  • Mfr. Part No. 1SDA054370R1
Each
PHP266,249.25(exc. VAT)
Temporarily out of stock
ABB ZLS Universal Adapter for SMISSLINE TP System
  • RS Stock No. 231-9535
  • Mfr. Part No. 2CCA180554R0001 ZLS971N
Each
PHP761.23(exc. VAT)
Temporarily out of stock
Eaton RCBO, 10A Current Rating, 2P Poles, 100mA Trip Sensitivity, Type A, Type C, FRBdM Range
  • RS Stock No. 121-027
  • Mfr. Part No. 168283 FRBDM-C10/1N/01-G/A
Each
PHP12,125.82(exc. VAT)
In Stock
Mersen 100A British Standard Fuse, 17 x 49mm, 690V, 61 → 65.5mm
  • RS Stock No. 304-2726
  • Mfr. Part No. L220971
Each
PHP4,900.53(exc. VAT)
Temporarily out of stock
ABB Tmax XT Cover for use with Tmax XT
  • RS Stock No. 232-0201
  • Mfr. Part No. 1SDA066662R1 LTC XT4 2PCS
Each
PHP1,814.97(exc. VAT)
Temporarily out of stock
Schneider Electric Cross Elbow Busbar Trunking, 290 → 800mm, 630A, Canalis Series
  • RS Stock No. 335-116
  • Mfr. Part No. KSA630DMBK43A
Each
PHP191,879.55(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 3 kA
  • RS Stock No. 245-215
  • Mfr. Part No. 3VA6225-6HN41-2AA0
Each
PHP214,067.83(exc. VAT)
Temporarily out of stock
Eaton Eaton Moeller U-PKZ0 Undervoltage Release for use with Motor Protective Circuit Breaker
  • RS Stock No. 248-386
  • Mfr. Part No. 073129 U-PKZ0(24V50HZ)
Each
PHP3,284.33(exc. VAT)
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