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

155 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB 4P 15A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-634
  • Mfr. Part No. 3VA5195-5EF41-0AA0
Each
PHP50,916.25(exc. VAT)
In Stock
RS PRO 63A NH Fuse, NH000, 415V ac
  • RS Stock No. 221-3678
Each (In a Pack of 3)
PHP952.773(exc. VAT)
Temporarily out of stock
Eaton NZM Jumper Link for use with N3-4-…-S1(-S15)-DC
  • RS Stock No. 120-239
  • Mfr. Part No. 168590 NZM3-4-XKV2POU-K
Each
PHP50,553.71(exc. VAT)
Temporarily out of stock
Schneider Electric Feed Unit, Canalis Series
  • RS Stock No. 207-231
  • Mfr. Part No. KSA630ABGD4
Each
PHP257,789.52(exc. VAT)
In Stock
MECATRACTION Brass Earth Clamp
  • RS Stock No. 284-6339
  • Mfr. Part No. BT9
1 Box of 10
PHP8,356.25(exc. VAT)
In Stock
ABB HPMCB - High Performance MCB Handle Extension for use with S800 Series
  • RS Stock No. 259-9859
  • Mfr. Part No. 1SDA060179R0001
Each
PHP2,082.56(exc. VAT)
Temporarily out of stock
Eaton Eaton Moeller Series NZM Adapter for use with N3, NZM3, PN3
  • RS Stock No. 235-217
  • Mfr. Part No. 107206 NZM3-XAD630
Each
PHP21,113.54(exc. VAT)
Temporarily out of stock
ABB Tmax T Auxiliary Contact for use with Circuit Breaker
  • RS Stock No. 232-0150
  • Mfr. Part No. 1SDA062104R1 AUX-C T7 1Q+1SY 400VAC
Each
PHP5,272.95(exc. VAT)
Temporarily out of stock
Eaton xE?ect - FBHmV RCCB, 80A, 4 Pole, 300mA, Type A, 240/415V ac
  • RS Stock No. 121-122
  • Mfr. Part No. 170131 FBHMV-80/4/03-A
Each
PHP22,104.24(exc. VAT)
Temporarily out of stock
ABB S803S MCB, 3P, 16A, UC-B, 750V DC, 50 kA Breaking Capacity
  • RS Stock No. 141-099
  • Mfr. Part No. 2CCS863001R1165
Each
PHP22,704.78(exc. VAT)
In Stock
Nidec Components 0.5A Resettable Fuse, 60V
  • RS Stock No. 637-6369
  • Mfr. Part No. PRCP-R050-0-99
Each (In a Pack of 10)
PHP35.124(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 30A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 240-572
  • Mfr. Part No. 102193 FAZ-D30/2-NA
Each
PHP12,316.23(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 3.2kA IZMX/INX, 4 channels , Withdrawable
  • RS Stock No. 132-749
  • Mfr. Part No. 183801 IZMX40H4-P32W-1
Each
PHP2,331,863.58(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 40A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 248-699
  • Mfr. Part No. 102116 FAZ-D40/1-NA
Each
PHP5,842.88(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 25A Curve C, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 231-371
  • Mfr. Part No. 113764 FAZ-C25/1-NA-DC
Each
PHP8,943.93(exc. VAT)
Temporarily out of stock
Eaton MCB, 2P, 4A Curve B, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 240-540
  • Mfr. Part No. 101288 PLI-B4/2
Each
PHP5,439.67(exc. VAT)
Temporarily out of stock
Eaton 200A Bolted Tag Fuse, 415V ac, 92mm
  • RS Stock No. 181-8608
  • Mfr. Part No. 200MJ31-7
Each (In a Box of 10)
PHP4,231.652(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 1 Phase Busbar, 230 V, 400 V, 9mm Pitch
  • RS Stock No. 238-4084
  • Mfr. Part No. A9XPN724
Each (In a Pack of 8)
PHP5,713.845(exc. VAT)
Temporarily out of stock
Phoenix Contact Thermal Circuit Breaker - TCP Single Pole 32V dc Voltage Rating Base Mounting, 30A Current Rating
  • RS Stock No. 558-695
  • Mfr. Part No. 1499946
1 Pack of 100
PHP48,913.33(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 1P, 40A Curve C, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 335-290
  • Mfr. Part No. SE10C140
Each
PHP2,202.86(exc. VAT)
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