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

71 of 999+
Better World
Siemens, SENTRON MCCB 3P 50A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-4997
  • Mfr. Part No. 3VA1150-5EF36-0AA0
Each
PHP27,536.14(exc. VAT)
Siemens ALPHA Busbar
  • RS Stock No. 226-0831
  • Mfr. Part No. 8GK9733-0KK10
Each
PHP1,100.58(exc. VAT)
Better World
Schneider Electric Spreader for use with Compact Nsx 400/630, Easypact Cvs 400/630
  • RS Stock No. 221-1233
  • Mfr. Part No. LV432490
Each
PHP7,187.27(exc. VAT)
Schurter Non-Resettable Wire Ended Fuse 1A, 250V ac
  • RS Stock No. 173-7890
  • Mfr. Part No. 8020.0514.PT
1 Box of 1000
PHP21,681.00(exc. VAT)
Better World
Siemens 5SV3346 RCCB, 63A, 4 Pole, 30mA, Type A, 400V ac
  • RS Stock No. 231-8381
  • Mfr. Part No. 5SV3346-6GV01
Each (In a Pack of 18)
PHP21,942.757(exc. VAT)
Better World
Schneider Electric Acti 9 3 Phase Distribution Board, 8 Way, 250 A
  • RS Stock No. 125-1413
  • Mfr. Part No. SEA9BN8PEV
Each
PHP27,345.18(exc. VAT)
Schneider Electric, ComPacT New Generation MCCB 3P 80A, Fixed Mount
  • RS Stock No. 260-7803
  • Mfr. Part No. C16N3TM080
Each
PHP68,372.67(exc. VAT)
Better World
Schneider Electric iC60 RCD, 40A, 30mA
  • RS Stock No. 734-9208
  • Mfr. Part No. A9Q11240
Each
PHP22,951.94(exc. VAT)
Schneider Electric Acti9 Acti9 iC60 MCB, 3P, 3A Curve D, 400V AC, 180V DC, 50 kA Breaking Capacity
  • RS Stock No. 287-5953
  • Mfr. Part No. A9F75303
Each
PHP19,282.62(exc. VAT)
Siemens 90 → 110V ac Shunt Trip Circuit Trip for use with 3RV2 Series Circuit Breakers
  • RS Stock No. 706-1942
  • Mfr. Part No. 3RV2902-1DF0
Each
PHP3,157.54(exc. VAT)
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 80A, Breaking Capacity 25kA
  • RS Stock No. 260-9726
  • Mfr. Part No. LV510316
Each
PHP40,932.74(exc. VAT)
Schneider Electric, ComPacT New Generation MCCB 3P 125A, Fixed Mount
  • RS Stock No. 260-7740
  • Mfr. Part No. C16B3TM125
Each
PHP53,618.35(exc. VAT)
Schneider Electric Multi9 Multi9 MCB, 1P, 13A Curve B, 240 V, 415 V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 110-265
  • Mfr. Part No. M9F21113
Each
PHP2,921.40(exc. VAT)
Eaton MCCB 3P 12A
  • RS Stock No. 178-8045
  • Mfr. Part No. 278486 PKZM0-12
Each
PHP10,009.29(exc. VAT)
Siemens SENTRON 5SY8 MCB, 2P, 6A Curve D, 230V AC, 60V DC, 50 kA Breaking Capacity
  • RS Stock No. 610-500
  • Mfr. Part No. 5SY8506-8
Each
PHP8,364.60(exc. VAT)
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 80A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9717
  • Mfr. Part No. LV510306
Each
PHP26,407.01(exc. VAT)
Mersen 125A Bolted Tag Fuse, B2, 460 V dc, 690V ac, 111mm
  • RS Stock No. 178-1134
  • Mfr. Part No. D1006621 / BTF69V125
Each (In a Pack of 5)
PHP2,804.202(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 268-527
  • Mfr. Part No. 3VA6115-5HN31-0AA0
Each
PHP102,635.26(exc. VAT)
Schneider Electric Multi9 M9F MCB, 2P, 32A Curve D, 240V AC, 125V DC, 20 kA Breaking Capacity
  • RS Stock No. 288-1397
  • Mfr. Part No. M9F12232
Each
PHP15,560.65(exc. VAT)
Schneider Electric K Residual Current Circuit Breaker, 63A, 4P Pole, 100mA, Type AC, 380 → 415V ac
  • RS Stock No. 588-940
  • Mfr. Part No. A9KR15463
Each
PHP3,536.16(exc. VAT)
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