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

46579 Products showing for Fuses & Circuit Breakers

81 / 999+
HENSEL ENYSTAR Distribution Board, 1 Way, 100 A
  • RS Stock No. 117-668
  • Mfr. Part No. FP 1211
Each
MYR1,092.08
ABB MCCB Molded Case Circuit Breaker 4P 400A, Fixed Mount
  • RS Stock No. 250-4090
  • Mfr. Part No. 1SDA054359R1
Each
MYR17,500.28
Schneider Electric ComPact Interlock for use with ComPact NS, ComPact NSX, MasterPact NT, Masterpact NW Series Circuit
  • RS Stock No. 247-1727
  • Mfr. Part No. 29470
Each
MYR12,249.29
SIBA 16A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 783-3396
  • Mfr. Part No. 70-059-60/16A
Each (In a Pack of 10)
MYR1.716
Better World
Siemens 5sV3 RCCB, 63A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 211-9633
  • Mfr. Part No. 5SV3316-6
Each
MYR1,306.70
Eaton xEffect MCB, 2P, 10A Curve S, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 532-5152
  • Mfr. Part No. 278810 FAZ-S10/2
Each
MYR393.60
Better World
ABB, XT4H MCCB 3P 250A, Fixed Mount
  • RS Stock No. 236-6630
  • Mfr. Part No. 1SDA068175R1 XT4H 250 BLOC FF
Each
MYR2,965.24
Eaton 15A T Fibreglass Cartridge Fuse, 10 x 38mm
  • RS Stock No. 851-1671
  • Mfr. Part No. FNQ-15
Each
MYR236.66
Eaton xEffect MCB, 2P, 15A Curve D, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3513
  • Mfr. Part No. 102189 FAZ-D15/2-NA
Each
MYR569.14
RS PRO 5A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 414-055
Each (In a Pack of 10)
MYR5.553
RS PRO 1A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 177-8093
Each (In a Pack of 20)
MYR2.519
Eaton 250A British Standard Fuse, FM, 690 V ac, 500V dc, 80 → 85mm
  • RS Stock No. 156-9083
  • Mfr. Part No. 250FM
Each
MYR382.70
Eaton 1A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1379
  • Mfr. Part No. S506-1-R
Each (In a Pack of 10)
MYR2.789
Eaton 450A British Standard Fuse, LMT, 240V ac, 58.1mm
  • RS Stock No. 182-1459
  • Mfr. Part No. 450LMT
Each
MYR305.95
ABB, Protecta MCCB 3P 63A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 831-9163
  • Mfr. Part No. 1SDA067414R1 XT1N 160 TMD 63-630 3p F F
Each
MYR1,468.87
Siemens SENTRON 5SP4 MCB, 4P, 80A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 209-6563
  • Mfr. Part No. 5SP4480-8
Each
MYR2,940.39
Eaton IZMX16H3-V12F-1 Electronic Circuit Breaker 1.25kA , Fixed
  • RS Stock No. 127-707
  • Mfr. Part No. 183339 IZMX16H3-V12F-1
Each
MYR34,482.14
Siemens 25A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 232-2024
  • Mfr. Part No. 3NW1250-0HG
Each (In a Pack of 10)
MYR121.171
ABB 100A Centred Tag Fuse, NH000, 500V
  • RS Stock No. 779-9978
  • Mfr. Part No. OFAF000H100 1SCA022627R1550
Each
MYR34.83
Schneider Electric, ComPacT MCCB 3P 630A, Fixed Mount
  • RS Stock No. 260-8212
  • Mfr. Part No. C63H32D630
Each
MYR29,024.11
1
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