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

93 of 999+
In Stock
Siemens Sentron Contactor Interface Module
  • RS Stock No. 196-3597
  • Mfr. Part No. 5SM2322-6
Each
SGD170.62(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Multi 9 C60BP MCB, 2P, 30A Curve C, 440V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 211-2421
  • Mfr. Part No. M9F42230
Each
SGD296.58(exc. GST)
Temporarily out of stock
63A Fuse Holder for 109 x 34.9 x 75.4mm Fuse, 1P, 690V ac
  • RS Stock No. 263-106
  • Mfr. Part No. RS63H
1 Pack of 10
SGD517.97(exc. GST)
Currently unavailable
Altech Thermal Circuit Breaker - V-EA 2 Pole 277V Voltage Rating DIN Rail Mount, 6A Current Rating
  • RS Stock No. 899-1800
  • Mfr. Part No. 2E6UM
Each
SGD47.75(exc. GST)
In Stock
Lovato 32A Rail Mount Fuse Holder, 3P, 690V ac
  • RS Stock No. 188-1621
  • Mfr. Part No. FB01F3P
Each
SGD32.13(exc. GST)
In Stock
Eaton 32A Slow-Blow Cartridge Fuse, 14 x 51mm
  • RS Stock No. 228-599
  • Mfr. Part No. C14M32 CYLINDRICAL FUSE 14 x 51 32A AM 500V AC
1 Pack of 10
SGD31.41(exc. GST)
In Stock
Schurter 30A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 1kV
  • RS Stock No. 712-4793
  • Mfr. Part No. 0091.0001
Each
SGD26.50(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 3P, 32A Curve C, 440V AC, 15 kA Breaking Capacity
  • RS Stock No. 211-2376
  • Mfr. Part No. M9F22332
Each
SGD129.07(exc. GST)
Temporarily out of stock
Eaton Three Phase Surge Protector, 40kA, 2.2kV, DIN Rail Mount
  • RS Stock No. 120-849
  • Mfr. Part No. 167611 SPCT2-460/4
Each
SGD1,340.61(exc. GST)
In Stock
Siemens SENTRON 3 Phase Busbar, 18mm Pitch
  • RS Stock No. 202-7199
  • Mfr. Part No. 5ST3712
Each
SGD224.43(exc. GST)
In Stock
SIBA 8A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 783-3380
  • Mfr. Part No. 70-059-60/8A
Each (In a Pack of 10)
SGD0.791(exc. GST)
In Stock
Legrand DX Range DX3 MCB, 2P, 20A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 731-9702
  • Mfr. Part No. 4 077 85
Each
SGD152.16(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 400A, Fixed Mount
  • RS Stock No. 260-8130
  • Mfr. Part No. C40N42D400
Each
SGD6,981.22(exc. GST)
In Stock
Siemens Fuse Holder NEOZED Screw Cap
  • RS Stock No. 202-7163
  • Mfr. Part No. 5SH4317
Each (In a Pack of 20)
SGD2.27(exc. GST)
In Stock
RS PRO 15A Inline Fuse Holder for ATO/ATC 19x18.6mm Fuse, 32V
  • RS Stock No. 237-5266
Each
SGD5.60(exc. GST)
In Stock
Littelfuse 20A Base Mount Fuse Holder for 6.3 x 32mm Fuse, 1P, 300V ac
  • RS Stock No. 787-4316
  • Mfr. Part No. 03540821ZXBL
Each (In a Pack of 5)
SGD1.742(exc. GST)
In Stock
Eaton RCCB, 40A, 3+N Pole, 30mA, Type B, 415V ac
  • RS Stock No. 183-3553
  • Mfr. Part No. 179531 FRCDM-40/4/003-G/BFQ
Each
SGD1,405.28(exc. GST)
In Stock
Schneider Electric Acti9 1 Phase Distribution Board, 6 Way, 125 A
  • RS Stock No. 244-967
  • Mfr. Part No. SE125A6
Each
SGD209.52(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 500A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 346-756
  • Mfr. Part No. C50F4TM320D3
Each
SGD7,055.34(exc. GST)
In Stock
ABB System Pro M Compact S200M MCB, 1P, 16A Curve D, 230V AC, 72V DC, 15 kA Breaking Capacity
  • RS Stock No. 746-8135
  • Mfr. Part No. 2CDS271001R0161 S201M-D16
Each
SGD33.60(exc. GST)
1
93
2456
Results per page

Related links