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

33502 Products showing for Fuses & Circuit Breakers

188 of 999+
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit Breaker Accessory 2P 250A, Fixed Mount
  • RS Stock No. 119-396
  • Mfr. Part No. C252250S
Each
PHP85,046.02(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 1A Curve C, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 247-137
  • Mfr. Part No. 102158 FAZ-C1/2-NA
Each
PHP11,363.19(exc. VAT)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 629-316
  • Mfr. Part No. 8GK1383-1KK13
Each
PHP40,942.52(exc. VAT)
Temporarily out of stock
Better World
Eaton 355A Tag Fuse, 217 x 82 x 94mm, 1kV, 167mm
  • RS Stock No. 282-6243
  • Mfr. Part No. PV-355A-2XL-B
Each
PHP31,254.68(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1.6kA , DIN Rail
  • RS Stock No. 127-484
  • Mfr. Part No. 183345 IZMX16B3-V16W-1
Each
PHP657,564.91(exc. VAT)
Temporarily out of stock
Siemens SENTRON Busbar, 690V
  • RS Stock No. 266-738
  • Mfr. Part No. 8US1921-2BD01
1 Pack of 15
PHP6,739.21(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4753
  • Mfr. Part No. 3VA2163-7JQ36-0AA0
Each
PHP128,424.98(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-267
  • Mfr. Part No. 3VA5112-6EC31-1AA0
Each
PHP86,869.52(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Straight Busbar Trunking, 2m, 40A, KBB Series
  • RS Stock No. 219-8867
  • Mfr. Part No. KBB40ED44203W
Each
PHP14,592.19(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 236-6838
  • Mfr. Part No. 1SDA068588R1 XT4L 160 Ekip LSIG 100A FF
Each
PHP235,085.89(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 50A, Fixed Mount
  • RS Stock No. 260-7607
  • Mfr. Part No. C11F4TM050L
Each
PHP43,115.31(exc. VAT)
In Stock
Littelfuse 0.25A Resettable Fuse, 240V ac/dc
  • RS Stock No. 869-7362
  • Mfr. Part No. LVR025K-2
Each (In a Bag of 10)
PHP35.719(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 1.6A, 250V ac
  • RS Stock No. 173-9798
  • Mfr. Part No. 0034.6617
Each (In a Bag of 100)
PHP22.54(exc. VAT)
Temporarily out of stock
Eaton Dummy Tray for use with Pasco Paco
  • RS Stock No. 132-462
  • Mfr. Part No. 1713607 LPC-PHM-DUMMY
Each
PHP1,475.08(exc. VAT)
In Stock
Eaton 160A British Standard Fuse, A4, 660V ac, 93.7mm
  • RS Stock No. 415-266
  • Mfr. Part No. TCP100M160
Each
PHP2,032.51(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 231-494
  • Mfr. Part No. 110215 NZMB2-A160-BT
Each
PHP73,750.77(exc. VAT)
In Stock
Eaton 100A British Standard Fuse, A4, 660V ac, 93.7mm
  • RS Stock No. 418-546
  • Mfr. Part No. TCP100
Each
PHP1,993.58(exc. VAT)
In Stock
Better World
Schneider Electric 48V ac/dc Undervoltage Release Circuit Trip for use with ARA, ic60 MCB, IDPN Vigi, iSW-NA, RCA,
  • RS Stock No. 211-2269
  • Mfr. Part No. A9A26961
Each
PHP8,618.29(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 630A, Breaking Capacity 9 kA, Fixed Mount
  • RS Stock No. 229-477
  • Mfr. Part No. 110896 NZMH3-AE630-T
Each
PHP274,036.14(exc. VAT)
Temporarily out of stock
Better World
ABB, XT2H MCCB 4P 160A, Fixed Mount
  • RS Stock No. 236-7551
  • Mfr. Part No. 1SDA067901R1 XT2H 160 Ekip I 160A FF
Each
PHP77,903.67(exc. VAT)
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