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

49315 Products showing for Fuses & Circuit Breakers

1908 of 999+
Stocked by manufacturer
ABB Emax2 SACE Emax 2 Product Main Type Electronic Circuit Breaker 1600A 690V, 4 channels Ekip G Hi-Touch LSIG Release
  • RS Stock No. 259-4713
  • Mfr. Part No. 1SDA072990R1
Subtotal (1 unit)
SGD19,811.57(exc. GST)
Temporarily out of stock
Siemens 1.6kA Tag Fuse NH3 500V
  • RS Stock No. 608-708
  • Mfr. Part No. 3NC3245-1U
Subtotal (1 pack of 3 units)
SGD1,031.63(exc. GST)
Stocked by manufacturer
Better World
Siemens, SENTRON, 3VA2 Molded Case Circuit Breaker 3-Pole 63A, Breaking Capacity 110 kA, Fixed
  • RS Stock No. 270-3880
  • Mfr. Part No. 3VA2063-7KP36-0AA0
Subtotal (1 unit)
SGD1,861.06(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 3-Pole, 8A, Type C, 400V ac AC, 440 V dc DC, 6 kA Breaking
  • RS Stock No. 237-3260
  • Mfr. Part No. 2CDS253103R0084
Subtotal (1 unit)
SGD200.14(exc. GST)
Stocked by manufacturer
Siemens 630A Tag Fuse 137 x 52 mm 1.25kV
  • RS Stock No. 299-763
  • Mfr. Part No. 3NB1242-3KK15
Subtotal (1 unit)
SGD608.00(exc. GST)
Stocked by manufacturer
Eaton, NZM, NZM Molded Case Circuit Breaker 4-Pole 20A, Breaking Capacity 5 kA, Plug-in
  • RS Stock No. 230-397
  • Mfr. Part No. 113396 NZMH2-4-A20-SVE
Subtotal (1 unit)
SGD1,312.38(exc. GST)
Stocked by manufacturer
ABB Emax2 1SDA07 Electronic Circuit Breaker 1000A 690V, 3 channels Ekip Touch LI Release 2
  • RS Stock No. 259-4159
  • Mfr. Part No. 1SDA072274R1
Subtotal (1 unit)
SGD7,747.87(exc. GST)
Temporarily out of stock
Eaton xEffect xEffect Miniature Circuit Breaker, 3-Pole, 3A, Type C, 230V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 230-0973
  • Mfr. Part No. 239168 FAZ6-C3/3N
Subtotal (1 unit)
SGD156.36(exc. GST)
Temporarily out of stock
Better World
Eaton 125A Tag Fuse L 1500V, 159 mm
  • RS Stock No. 282-6500
  • Mfr. Part No. PV-125A-1XL-B-15
Subtotal (1 unit)
SGD671.64(exc. GST)
In Stock
Schurter 500mA F Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 167-7847
  • Mfr. Part No. 0001.1001
Subtotal (1 pack of 10 units)
SGD11.31(exc. GST)
Stocked by manufacturer
Better World
Siemens, SENTRON, 3VA1 Molded Case Circuit Breaker 4-Pole 40A, Breaking Capacity 55 kA, DIN Rail
  • RS Stock No. 271-9331
  • Mfr. Part No. 3VA1140-5ED46-0AA0
Subtotal (1 unit)
SGD645.29(exc. GST)
In Stock
Bourns Non-Resettable Fuse 1 A, 63 V dc
  • RS Stock No. 692-5056P
  • Mfr. Part No. SF-1206S100-2
Subtotal 10 units (supplied on a continuous strip)
SGD6.44(exc. GST)
Stocked by manufacturer
Siemens, SENTRON, 3VA5 Molded Case Circuit Breaker 3-Pole 225A, Breaking Capacity 18 kA, Fixed
  • RS Stock No. 147-787
  • Mfr. Part No. 3VA5222-5EC31-1AA0
Subtotal (1 unit)
SGD2,217.83(exc. GST)
Stocked by manufacturer
Siemens, SENTRON, 3VA6 Molded Case Circuit Breaker 3-Pole 600A, Breaking Capacity 35 kA, Fixed
  • RS Stock No. 249-346
  • Mfr. Part No. 3VA6560-5JT36-2AA0
Subtotal (1 unit)
SGD9,138.42(exc. GST)
Stocked by manufacturer
Eaton, NZM, NZM Molded Case Circuit Breaker 3-Pole 200A, Breaking Capacity 5 kA, Plug-in
  • RS Stock No. 229-875
  • Mfr. Part No. 113347 NZMH2-S200-SVE
Subtotal (1 unit)
SGD2,403.70(exc. GST)
In Stock
Phoenix Contact Surge Protector, 200 mA, 95 V, DIN Rail
  • RS Stock No. 277-8609
  • Mfr. Part No. 1088570
Subtotal (1 unit)
SGD295.68(exc. GST)
Stocked by manufacturer
Schneider Electric Surge Arrester, 8 kA, 460 V ac
  • RS Stock No. 429-213
  • Mfr. Part No. A9L08421
Subtotal (1 unit)
SGD1,158.99(exc. GST)
In Stock
Mersen 20A, 400 A Base Mount Fuse Holder, 700V ac
  • RS Stock No. 304-2928
  • Mfr. Part No. C220710 / SI000DN80
Subtotal (1 unit)
SGD63.00(exc. GST)
In Stock
Bourns 0.2 A Resettable Fuse, 60V
  • RS Stock No. 734-8882P
  • Mfr. Part No. MF-MSMF020/60-2
Subtotal 10 units (supplied on a continuous strip)
SGD4.98(exc. GST)
Stocked by manufacturer
ABB SU200 M Miniature Circuit Breaker, 3-Pole, 16A, Type Z, 400V ac AC, 15 kA Breaking Capacity
  • RS Stock No. 203-914
  • Mfr. Part No. 2CDS273337R0468
Subtotal (1 unit)
SGD295.53(exc. GST)
1
1908
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