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

49110 Products showing for Fuses & Circuit Breakers

88 of 999+
In Stock
Mersen 2A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 230-3519
  • Mfr. Part No. Y219234
Each (In a Pack of 10)
SGD5.311(exc. GST)
Currently unavailable
ABB RCCB, 32A, 4 Pole, 300mA, Type C, 415V ac
  • RS Stock No. 246-2415
  • Mfr. Part No. 2CCG001758R0001
Each
SGD816.12(exc. GST)
In Stock
SIBA 4A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 783-3365
  • Mfr. Part No. 70-059-60/4A
Each (In a Pack of 10)
SGD1.008(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 C120H MCB, 3P, 80A Curve C, 440V AC, 375V DC, 15 kA, 30 kA Breaking Capacity
  • RS Stock No. 776-3023
  • Mfr. Part No. A9N18468
Each
SGD659.49(exc. GST)
In Stock
Eaton 50A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 182-1737
  • Mfr. Part No. 170M1564D
Each
SGD102.97(exc. GST)
Temporarily out of stock
Siemens 400A NH Fuse, NH1, 1kV, 110mm
  • RS Stock No. 397-418
  • Mfr. Part No. 3NE3232-0B
Each (In a Pack of 3)
SGD367.21(exc. GST)
In Stock
Eaton 45A Centred Tag Fuse, 600V
  • RS Stock No. 854-9008
  • Mfr. Part No. LPJ-45SP
Each
SGD217.14(exc. GST)
In Stock
SIBA 10A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 418-9618
  • Mfr. Part No. 70-059-61/10A
Each (In a Pack of 10)
SGD0.60(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 1P, 2A Curve C, 240V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-3436
  • Mfr. Part No. A9F74102
Each
SGD80.61(exc. GST)
In Stock
ABB System Pro M Compact S200 MCB, 2P, 2A Curve B, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 203-715
  • Mfr. Part No. 2CDS252001R0025
Each
SGD107.78(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 32A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-3253
  • Mfr. Part No. A9F87232
Each
SGD187.60(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 3P, 10A Curve C
  • RS Stock No. 247-1949
  • Mfr. Part No. A9F94310
Each
SGD284.51(exc. GST)
Limited stock
ETA Busbar, 24V dc
  • RS Stock No. 631-9158
  • Mfr. Part No. Y307.016.01 BUSBAR
Each
SGD15.25(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 16A Curve D, 100 → 130V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9664
  • Mfr. Part No. A9F75216
Each
SGD120.30(exc. GST)
Temporarily out of stock
Eaton Fuse Puller Fuse Puller
  • RS Stock No. 261-727
  • Mfr. Part No. FP-6
Each
SGD251.84(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 C60BP MCB, 1P, 1A Curve C, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 211-2410
  • Mfr. Part No. M9F42101
Each
SGD129.74(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 1P, 16A Curve B, 240V AC, 10000 A Breaking Capacity
  • RS Stock No. 335-288
  • Mfr. Part No. SE10B116
Each
SGD41.59(exc. GST)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 1.25kA, Fixed Mount
  • RS Stock No. 232-0158
  • Mfr. Part No. 1SDA062882R1 T7S-M 1250A PR231-LS/I FF
Each
SGD7,265.00(exc. GST)
In Stock
Littelfuse 3A Purple Blade Car Fuse, 32V dc
  • RS Stock No. 787-4148
  • Mfr. Part No. 0297003.WXNV
Each (In a Pack of 10)
SGD0.35(exc. GST)
Temporarily out of stock
Better World
ABB, XT2S MCCB 3P 120A, Fixed Mount
  • RS Stock No. 236-7491
  • Mfr. Part No. 1SDA067765R1 XT2S 160 MA 20 FF
Each
SGD434.25(exc. GST)
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