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

190 of 999+
Eaton xComfort Terminal for use with Screw Terminal
  • RS Stock No. 272-0713
  • Mfr. Part No. 174173 N/PE-24-IKA
Each
PHP2,361.07(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3766
  • Mfr. Part No. 3VA2040-7HM36-0AA0
Each
PHP93,499.51(exc. VAT)
Eaton 32A Fuse Holder for 103 x 31 x 151mm Fuse, 1P, 690V ac
  • RS Stock No. 261-370
  • Mfr. Part No. RS32P
1 Pack of 10
PHP21,703.82(exc. VAT)
Lasttrennschalter Resi9, 3P+N, 63A, 415V
  • RS Stock No. 537-825
  • Mfr. Part No. R9S64463
Each
PHP3,062.15(exc. VAT)
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-169
  • Mfr. Part No. KV 6104
Each
PHP2,845.15(exc. VAT)
Eaton Surge Protector, 40kA, 1.4kV
  • RS Stock No. 125-707
  • Mfr. Part No. 176091 SPPVT2-06
Each
PHP13,667.18(exc. VAT)
ABB S801N MCB, 1P, 16A Curve C, 400V AC, 36 kA Breaking Capacity
  • RS Stock No. 140-330
  • Mfr. Part No. 2CCS891001R0164
Each
PHP4,981.66(exc. VAT)
Eaton NZM Undervoltage Release for use with Circuit Breaker
  • RS Stock No. 242-987
  • Mfr. Part No. 189781 NZM2/3-XUHIV24DC-PI
Each
PHP14,882.11(exc. VAT)
ABB S203L MCB, 3P, 32A Curve D, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 203-702
  • Mfr. Part No. 2CDS243701R0321
Each
PHP6,364.40(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-434
  • Mfr. Part No. 3VA5150-5EF31-0AA0
Each
PHP39,346.31(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 20A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-285
  • Mfr. Part No. 3VA5120-4EC31-1AA0
Each
PHP35,545.33(exc. VAT)
ABB 25A Centred Tag Fuse, NH000, 500V
  • RS Stock No. 779-9952
  • Mfr. Part No. OFAF000H25 1SCA022627R0820
Each
PHP414.71(exc. VAT)
ABB RCBO, 8A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6954
  • Mfr. Part No. 2CSR255180R1084 DS201 C8 A30
Each
PHP13,810.12(exc. VAT)
ABB SU 200 M Circuit Breaker, 2P, 10A Curve C, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 287-6392
  • Mfr. Part No. 2CDS272337R0104
Each
PHP6,592.35(exc. VAT)
Siemens SENTRON Busbar
  • RS Stock No. 266-505
  • Mfr. Part No. 8US1313-4AM04
Each
PHP25,014.54(exc. VAT)
Siemens SENTRON Sliding Contacts for use with 3VA13/14, 3VA23/24
  • RS Stock No. 274-009
  • Mfr. Part No. 3VA9368-0VF30
Each
PHP16,494.95(exc. VAT)
Schneider Electric, ComPacT New Generation MCCB 3P 125A, Breaking Capacity 25 kA, Screw Mount
  • RS Stock No. 207-249
  • Mfr. Part No. BDL36125LU
Each
PHP64,614.72(exc. VAT)
Eaton Eaton Moeller 1 Phase Busbar, 1000V, 17.6mm Pitch
  • RS Stock No. 123-035
  • Mfr. Part No. 171131 Z-BB/UL25/1P1MU/57
Each
PHP1,316.16(exc. VAT)
Eaton Eaton xEffect Busbar, 1000 V ac/dc, 1500 V ac/dc
  • RS Stock No. 229-409
  • Mfr. Part No. 119036 CU-BAND10X32X1-BK
Each
PHP33,784.43(exc. VAT)
Eaton Eaton Moeller 3 Phase Busbar, 600V, 26.4mm Pitch
  • RS Stock No. 123-041
  • Mfr. Part No. 171136 Z-BB/UL18/3P1MU+AUX/48
Each
PHP12,745.23(exc. VAT)
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