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

49112 Products showing for Fuses & Circuit Breakers

5 of 999+
Mersen 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P+N, 690V ac
  • RS Stock No. 189-5334
  • Mfr. Part No. G1062698 / CMC101N
Each
SGD27.01(exc. GST)
Eaton 250mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1262
  • Mfr. Part No. S500-250-R
Each (In a Pack of 10)
SGD4.425(exc. GST)
Wickmann 50A Black Bolt Down Car Fuse, 32V dc
  • RS Stock No. 174-0733
  • Mfr. Part No. 0498050.M
Each (In a Pack of 10)
SGD2.376(exc. GST)
Legrand 4115 RCD, 40A, 1+N Pole, 30mA, Type A
  • RS Stock No. 863-7773
  • Mfr. Part No. 4 115 55
Each
SGD131.71(exc. GST)
HENSEL 1, 3 Phase Distribution Board, 54 Way, 63 A
  • RS Stock No. 183-2863
  • Mfr. Part No. KV9354M
Each
SGD536.51(exc. GST)
SIBA 1.25A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3302
  • Mfr. Part No. 70-007-65/1.25A
Each (In a Pack of 10)
SGD0.601(exc. GST)
Eaton 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 848-3024
  • Mfr. Part No. BK-GMA-2-R
Each
SGD0.85(exc. GST)
ETA REX12 Electronic Circuit breaker 6A 24V REX12-T, 1 channels , DIN Rail Mount
  • RS Stock No. 175-0367
  • Mfr. Part No. REX12-TA1-107-DC24V-6A
Each
SGD83.18(exc. GST)
Better World
Siemens SENTRON 5SY6 MCB, 1+N, 4A Curve C, 230V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 212-8898
  • Mfr. Part No. 5SY6504-7
Each
SGD97.94(exc. GST)
SIBA 1A M Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3565
  • Mfr. Part No. 70-010-05/1A
Each (In a Pack of 5)
SGD18.17(exc. GST)
Schurter LBC Fuse Kit
  • RS Stock No. 167-9219
  • Mfr. Part No. 7189.0009
Each
SGD369.80(exc. GST)
Mersen 1A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2882
  • Mfr. Part No. R302787
1 Box of 10
SGD115.54(exc. GST)
RS PRO Rail Mount Fuse Holder
  • RS Stock No. 501-871
Each
SGD23.30(exc. GST)
RS PRO 5A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6089
Each (In a Pack of 10)
SGD0.909(exc. GST)
Littelfuse 100mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4274
  • Mfr. Part No. 0217.100MXP
Each (In a Pack of 10)
SGD1.639(exc. GST)
Littelfuse 10A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 769-0017
  • Mfr. Part No. 0312010.HXP
Each (In a Pack of 10)
SGD0.569(exc. GST)
Altech 2A T Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 899-3014
  • Mfr. Part No. 2C10X38GI
Each (In a Pack of 10)
SGD4.208(exc. GST)
Siemens 4A D01 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-0913
  • Mfr. Part No. 5SE2304
Each (In a Pack of 10)
SGD2.542(exc. GST)
Schurter 30A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 1kV
  • RS Stock No. 712-4793P
  • Mfr. Part No. 0091.0001
Each (Supplied in a Box)
SGD26.50(exc. GST)
nVent ERIFLEX ERIFLEX Busbar
  • RS Stock No. 277-6178
  • Mfr. Part No. 568662
Each
SGD45.34(exc. GST)
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