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

33476 Products showing for Fuses & Circuit Breakers

84 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 85 kA
  • RS Stock No. 209-7057
  • Mfr. Part No. 3VA2063-6HL42-0AA0
Each
PHP50,202.21(exc. VAT)
In Stock
SIBA 160A Centred Tag Fuse, NH1, 500V ac
  • RS Stock No. 421-772
  • Mfr. Part No. 20-003-13/160A
Each
PHP814.80(exc. VAT)
In Stock
ABB System Pro M Compact S200 M UC MCB, 4P, 60A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 201-107
  • Mfr. Part No. 2CDS274061R0587
Each
PHP52,708.46(exc. VAT)
In Stock
HENSEL ENYBOARD Distribution Board, 41 A
  • RS Stock No. 117-118
  • Mfr. Part No. RK 1019 T
Each
PHP6,125.91(exc. VAT)
In Stock
Siemens 16A NH Fuse, NH000, 500V ac
  • RS Stock No. 397-363
  • Mfr. Part No. 3NA3805
1 Pack of 3
PHP1,490.56(exc. VAT)
Temporarily out of stock
Siemens Fuse Holder Fuse Holder
  • RS Stock No. 627-042
  • Mfr. Part No. 5SG1812
1 Pack of 10
PHP19,192.36(exc. VAT)
Temporarily out of stock
Phoenix Contact 1 Phase Surge Protector, 100kA, DIN Rail Mount
  • RS Stock No. 207-2714
  • Mfr. Part No. 2905471
Each
PHP16,012.40(exc. VAT)
Temporarily out of stock
Eaton Fuse Holder Installation Gauge
  • RS Stock No. 254-467
  • Mfr. Part No. 25GN02
1 Pack of 50
PHP3,877.83(exc. VAT)
In Stock
Schneider Electric RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti9 Range
  • RS Stock No. 212-166
  • Mfr. Part No. A9D07616
Each
PHP14,195.91(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 600A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 249-862
  • Mfr. Part No. 3VA6460-8HN31-0AA0
Each
PHP345,294.34(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 1P, 16A, Type Z, 230/400V AC, 72V DC, 15 kA Breaking Capacity
  • RS Stock No. 204-305
  • Mfr. Part No. 2CDS271001R0468
Each
PHP7,464.43(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 System Pro M Compact S200 M UC MCB, 3P, 13A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-371
  • Mfr. Part No. 2CDS273061R0134
Each
PHP30,318.58(exc. VAT)
Temporarily out of stock
Schneider Electric Vigi IC60 RCCB, 63A, 3 Pole, 30mA, Type A-SI, 400V ac
  • RS Stock No. 276-1542
  • Mfr. Part No. A9V31363
Each
PHP77,067.00(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 400A, Fixed Mount
  • RS Stock No. 250-4177
  • Mfr. Part No. 1SDA054449R1
Each
PHP258,396.02(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 250A
  • RS Stock No. 214-756
  • Mfr. Part No. LV429495
Each
PHP209,098.06(exc. VAT)
In Stock
ABB Tmax XT Padlock Device for use with Circuit Breaker
  • RS Stock No. 232-0195
  • Mfr. Part No. 1SDA066589R1 PLL XT1-3
Each
PHP2,539.08(exc. VAT)
In Stock
Eaton PC Board Non Resettable Fuse, Radial 6.3A, 250V ac
  • RS Stock No. 769-3242
  • Mfr. Part No. SR-5-6-3A-BK
Each (In a Pack of 10)
PHP40.112(exc. VAT)
In Stock
ABB 36 Way Plastic Consumer Unit, 125A, IP65 Mistral65
  • RS Stock No. 811-1909
  • Mfr. Part No. 1SL1205A00 65P18X22
Each
PHP6,744.75(exc. VAT)
Temporarily out of stock
ABB Tmax XT Key Lock for use with Tmax XT
  • RS Stock No. 236-6868
  • Mfr. Part No. 1SDA069182R1 RHL XT1..4 RONIS FLD
1 Box of 1
PHP6,123.89(exc. VAT)
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