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

275 of 999+
Temporarily out of stock
Phoenix Contact 2 Phase Surge Protector, 5kA, DIN Rail Mount
  • RS Stock No. 201-6200
  • Mfr. Part No. 2906743
Each
PHP9,770.80(exc. VAT)
In Stock
Omron Busbar
  • RS Stock No. 111-3535
  • Mfr. Part No. PYDN-7.75-030S
Each
PHP112.52(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-3933
  • Mfr. Part No. 3VA2110-0KP36-0AA0
Each
PHP137,165.04(exc. VAT)
In Stock
Eaton 224A NH Fuse, NH1, 500V ac
  • RS Stock No. 181-8452
  • Mfr. Part No. 224NHG1B
1 Box of 3
PHP1,802.26(exc. VAT)
In Stock
Siemens 355A Centred Tag Fuse, NH3, 500V ac
  • RS Stock No. 203-2020
  • Mfr. Part No. 3NA3354
Each (In a Pack of 3)
PHP3,091.57(exc. VAT)
In Stock
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 288-7184
  • Mfr. Part No. C256TM250
Each
PHP46,141.33(exc. VAT)
Temporarily out of stock
Siemens 1.25kA Tag Fuse, NH2, 690V
  • RS Stock No. 608-763
  • Mfr. Part No. 3NC3243-6B
1 Pack of 3
PHP43,363.86(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON 5SL60 MCB, 1P + N, 20A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 328-546
  • Mfr. Part No. 5SL6020-7MF
Each
PHP18,061.90(exc. VAT)
Temporarily out of stock
Siemens 5SM27 RCCB, 63A, 3 Pole, 500mA, Type A, 400V
  • RS Stock No. 328-400
  • Mfr. Part No. 5SM2735-6
Each
PHP12,756.10(exc. VAT)
Temporarily out of stock
Hager CDB RCCB, 63A, 4 Pole, 30mA, Type B, 230 → 400V ac
  • RS Stock No. 597-922
  • Mfr. Part No. CDB463E
Each
PHP145,727.89(exc. VAT)
Temporarily out of stock
Schneider Electric R9R RCCB, 40A, 4 Pole, 30mA, Type A, 400V ac
  • RS Stock No. 654-652
  • Mfr. Part No. R9R22440
Each
PHP8,878.22(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-314
  • Mfr. Part No. 3VA6140-6KM31-2AA0
Each
PHP188,409.01(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 250-114
  • Mfr. Part No. 3VA6560-6JQ32-2AA0
Each
PHP483,118.83(exc. VAT)
In Stock
RS PRO Non Resettable Fuse 1A, 250V ac
  • RS Stock No. 139-952
1 Bag of 10
PHP1,319.84(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 225A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 231-329
  • Mfr. Part No. 113009 NZMN2-4-AF225-BT-NA
Each
PHP180,564.75(exc. VAT)
Temporarily out of stock
Mersen 315A Bolted Tag Fuse, B3X, 240 V dc, 415V ac, 133mm
  • RS Stock No. 178-1073
  • Mfr. Part No. D226323 / BTKM42V315
Each
PHP3,418.26(exc. VAT)
Temporarily out of stock
Eaton 100A Bolted Tag Fuse, B1, 415V ac, 111mm
  • RS Stock No. 181-8468
  • Mfr. Part No. CD100M125
Each (In a Box of 10)
PHP1,893.913(exc. VAT)
Temporarily out of stock
Eaton 167880 FRCDM RCCB, 25A, 4 Pole, 230V ac
  • RS Stock No. 282-7016
  • Mfr. Part No. 167880 FRCDM-25/4/003-G/B+
Each
PHP84,237.95(exc. VAT)
Temporarily out of stock
Eaton xE?ect - FRCdM RCCB, 63A, 4 Pole, 300mA, 240/415V ac
  • RS Stock No. 121-216
  • Mfr. Part No. 167890 FRCDM-63/4/03-S/B+
Each
PHP118,945.91(exc. VAT)
In Stock
Legrand DX3 RCD, 32A, 1+N Pole, 30mA, Type C
  • RS Stock No. 731-9869
  • Mfr. Part No. 4 107 08
Each
PHP24,339.43(exc. VAT)
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