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

400 Products showing for Fuses & Circuit Breakers

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Stocked by manufacturer
Hager Terminal Block
  • RS Stock No. 251-2059
  • Mfr. Part No. KN04N
Subtotal (1 unit)
SGD19.90(exc. GST)
SGD19.90/unit
Stocked by manufacturer
Lovato Modulo P1MB Miniature Circuit Breaker, 1-Pole, 40A, Type C, 230V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 825-5618
  • Mfr. Part No. P1MB1PC40
Subtotal (1 unit)
SGD28.69(exc. GST)
SGD28.69/unit
Stocked by manufacturer
ABB Emax2 Emax 2 Electronic Circuit Breaker 1000A 690V, 4 channels Type N
  • RS Stock No. 259-4634
  • Mfr. Part No. 1SDA072907R1
Subtotal (1 unit)
SGD19,230.18(exc. GST)
SGD19,230.18/unit
Stocked by manufacturer
RS Better World
Schneider Electric, ComPact, ComPacT NSX Molded Case Circuit Breaker 4-Pole 100A, Breaking Capacity 36 kA
  • RS Stock No. 260-9447
  • Mfr. Part No. C10F4TM100
Subtotal (1 unit)
SGD1,272.32(exc. GST)
SGD1,272.32/unit
In Stock
Eaton 100A Ceramic Cartridge Fuse, 22 x 57 mm
  • RS Stock No. 182-1625
  • Mfr. Part No. 100KR85
Subtotal (1 unit)
SGD13.41(exc. GST)
SGD13.41/unit
In Stock
RS PRO 15A Fast Acting Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 199-238
Subtotal (1 pack of 10 units)
SGD431.99(exc. GST)
SGD431.99/pack
Stocked by manufacturer
ABB SMISSLINE TP S401M-B40NP Miniature Circuit Breaker, 2-Pole, 40A, Type B, 230V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 246-2538
  • Mfr. Part No. 2CCS571103R8405
Subtotal (1 unit)
SGD182.27(exc. GST)
SGD182.27/unit
Stocked by manufacturer
Eaton NZM Jumper Link for use with N4-4-.-S1(-S15)-PV-NA, N4-4-…-S1(-S15)-DC
  • RS Stock No. 121-565
  • Mfr. Part No. 152553 NZM4-4-XKV2P-K
Subtotal (1 unit)
SGD1,461.21(exc. GST)
SGD1,461.21/unit
Stocked by manufacturer
ABB S801N Miniature Circuit Breaker, 1-Pole, 16A, Type C, 400V ac AC, 36 kA Breaking Capacity
  • RS Stock No. 140-330
  • Mfr. Part No. 2CCS891001R0164
Subtotal (1 unit)
SGD118.53(exc. GST)
SGD118.53/unit
Stocked by manufacturer
Eaton BBA Busbar Adapter BBA 3 Phase Busbar, 690 V
  • RS Stock No. 240-449
  • Mfr. Part No. 101454 BBA0R-32
Subtotal (1 unit)
SGD147.64(exc. GST)
SGD147.64/unit
In Stock
TE Connectivity W28 Thermal Circuit Breaker -, 15A Current Rating 1-Pole, Panel
  • RS Stock No. 167-5699
  • Mfr. Part No. W28-XQ1A-15
Subtotal (1 unit)
SGD10.55(exc. GST)
SGD10.55/unit
Stocked by manufacturer
RS Better World
Schneider Electric, MasterPact, MTZ3 50H1 Molded Case Circuit Breaker 3-Pole 5000A, Fixed
  • RS Stock No. 248-3819
  • Mfr. Part No. LV848342
Subtotal (1 unit)
SGD77,085.49(exc. GST)
SGD77,085.49/unit
Stocked by manufacturer
Schneider Electric Linergy Mounting Plate for use with AK5 Series
  • RS Stock No. 211-2276
  • Mfr. Part No. AK5PC12PH
Subtotal (1 pack of 6 units)
SGD213.198(exc. GST)
SGD35.533/unit
Stocked by manufacturer
Eaton xEffect xEffect - FAZ-T Miniature Circuit Breaker, 1-Pole, 32A, Type D, 240V ac AC, 60 V dc DC, 25 kA Breaking
  • RS Stock No. 129-399
  • Mfr. Part No. 142515 FAZT-D32/1N
Subtotal (1 unit)
SGD193.33(exc. GST)
SGD193.33/unit
In Stock
Eaton, xEnergy, xEnergy Molded Case Circuit Breaker 1-Pole 63A, Breaking Capacity 50 kA, Fixed
  • RS Stock No. 628-7988
  • Mfr. Part No. 265720 NZMN1-M63
Subtotal (1 box of 1 unit)
SGD836.42(exc. GST)
SGD836.42/box
Stocked by manufacturer
Schneider Electric, ComPact, ComPacT NSXm Molded Case Circuit Breaker 4-Pole 50A, Breaking Capacity 25 kA
  • RS Stock No. 260-7542
  • Mfr. Part No. C11B4TM050B
Subtotal (1 unit)
SGD786.66(exc. GST)
SGD786.66/unit
Stocked by manufacturer
RS Better World
Siemens, SENTRON, 3VA6 Molded Case Circuit Breaker 3-Pole 600A, Breaking Capacity 150 kA, Fixed
  • RS Stock No. 249-901
  • Mfr. Part No. 3VA6460-8JP31-0AA0
Subtotal (1 unit)
SGD8,484.56(exc. GST)
SGD8,484.56/unit
Stocked by manufacturer
ABB, 1SDA05 Molded Case Circuit Breaker 4-Pole 320A
  • RS Stock No. 250-4123
  • Mfr. Part No. 1SDA054388R1
Subtotal (1 unit)
SGD6,661.29(exc. GST)
SGD6,661.29/unit
Stocked by manufacturer
RS Better World
ABB, XT4L, 1SDA06 Molded Case Circuit Breaker 3-Pole 100A, Breaking Capacity 150 kA, Fixed
  • RS Stock No. 236-6809
  • Mfr. Part No. 1SDA068553R1 XT4L 160 Ekip LS/I 100A FF
Subtotal (1 unit)
SGD1,917.88(exc. GST)
SGD1,917.88/unit
In Stock
RS Better World
Siemens 5SV4344 Series Residual Current Circuit Breaker, 40A, 4-Pole, 30 mA, Type AC, 10 kA 230V ac
  • RS Stock No. 231-8392
  • Mfr. Part No. 5SV4344-0
Subtotal (1 unit)
SGD203.46(exc. GST)
SGD203.46/unit
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