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

44 of 999+
Temporarily out of stock
Eaton 800A Bolted Tag Fuse, C3, 250 V dc, 550V ac, 134.5mm
  • RS Stock No. 182-1417
  • Mfr. Part No. GF800
Each
PHP19,953.97(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 236-6487
  • Mfr. Part No. 1SDA067932R1 XT2L 160 Ekip LSIG 100A FF
Each
PHP112,431.41(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 2P, 25A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 201-022
  • Mfr. Part No. 2CDS272061R0517
Each
PHP23,528.98(exc. VAT)
In Stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-558
  • Mfr. Part No. KV 1618
Each
PHP7,617.06(exc. VAT)
Temporarily out of stock
Better World
ABB, XT4S MCCB 3P 100A, Fixed Mount
  • RS Stock No. 236-6766
  • Mfr. Part No. 1SDA068478R1 XT4S 160 Ekip I 100A FF
Each
PHP56,060.32(exc. VAT)
Temporarily out of stock
Siemens SENTRON 1 Phase Busbar, 1mm Pitch
  • RS Stock No. 627-128
  • Mfr. Part No. 5ST3663-1HG
1 Pack of 10
PHP8,626.55(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 4 channels Type N
  • RS Stock No. 157-174
  • Mfr. Part No. 3VA2225-7HL42-0AA0
Each
PHP174,116.84(exc. VAT)
In Stock
Schurter OG Tin Plated Bronze PCB Mount Fuse Clip for 5 x 20mm Fuse Clip Fuse
  • RS Stock No. 269-3795
  • Mfr. Part No. 0751.0099
Each
PHP23.54(exc. VAT)
In Stock
Acti9 Busbar, 440V ac, 18mm Pitch
  • RS Stock No. 585-482
  • Mfr. Part No. A9XPF521
1 Pack of 5
PHP23,218.75(exc. VAT)
Temporarily out of stock
Better World
Siemens, 3VA2 MCCB 4P 250A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 210-3345
  • Mfr. Part No. 3VA2325-6HL42-0AA0
Each
PHP156,383.69(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 2P 60A, Breaking Capacity 35 kA, Clip-On
  • RS Stock No. 346-798
  • Mfr. Part No. BGF26060
Each
PHP50,228.96(exc. VAT)
Temporarily out of stock
Eaton Eaton Moeller FAZ-DC MCB Mini Circuit Breaker, 2P, 20A Curve B, 500V DC, 10 kA Breaking Capacity
  • RS Stock No. 125-836
  • Mfr. Part No. 176082 FAZ-B20/2-DC
Each
PHP11,674.11(exc. VAT)
Temporarily out of stock
ABB MCCB 3P 250A, Breaking Capacity 65 kA
  • RS Stock No. 192-0834
  • Mfr. Part No. 1SDA068126R1
Each
PHP104,339.17(exc. VAT)
Temporarily out of stock
Eaton xEffect xE?ect - FAZ-NA-DC MCB, 2P, 4A Curve C, 500V DC, 10 kA Breaking Capacity
  • RS Stock No. 103-959
  • Mfr. Part No. 137251 FAZ-C4/2-NA-DC
Each
PHP18,484.88(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS Stock No. 260-8096
  • Mfr. Part No. C40F3TM400D
Each
PHP231,936.89(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric iID RCCB, 80A, 4 Pole, 300mA
  • RS Stock No. 776-3717
  • Mfr. Part No. A9R14480
Each
PHP22,295.01(exc. VAT)
In Stock
Hager MJT MCB, 2P, 2A Curve C, 240 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 144-4948
  • Mfr. Part No. MJT702
Each
PHP2,660.72(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 20A, Breaking Capacity 25 kA, Screw Mount
  • RS Stock No. 207-187
  • Mfr. Part No. BDL46020LU
Each
PHP51,891.00(exc. VAT)
In Stock
Siemens Sirius Innovation Support F Stand-Alone Installation for use with 3RB30, 3RB31 SZ.S2, 3RU21
  • RS Stock No. 875-1103
  • Mfr. Part No. 3RU2936-3AA01
Each
PHP1,807.98(exc. VAT)
Temporarily out of stock
Phoenix Contact Three Phase Surge Arrester, 30kA, = 2.9kV, DIN Rail Mount
  • RS Stock No. 249-9524
  • Mfr. Part No. 2920269
Each
PHP24,295.12(exc. VAT)
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