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

46580 Products showing for Fuses & Circuit Breakers

59 / 999+
SIBA 1.6A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3305
  • Mfr. Part No. 70-007-65/1.6A
Each (In a Pack of 10)
MYR1.535
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC 2 Pole 250V ac Voltage Rating DIN Rail, 5A Current Rating
  • RS Stock No. 135-908
  • Mfr. Part No. 0915030
1 Pack of 3
MYR2,376.65
Eaton 200A Bolted Tag Fuse, B2, 550V ac, 111mm
  • RS Stock No. 182-1641
  • Mfr. Part No. TF200M315
Each
MYR666.71
Mersen 1.25A Time Lag Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 630-898
  • Mfr. Part No. X085373Q
1 Box of 10
MYR78.58
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA, Plug In
  • RS Stock No. 249-023
  • Mfr. Part No. 192064 NZMN2-4-PX100/VAR-SVE
Each
MYR11,987.98
WJ Furse Polypropylene Lightning Earth Clip Max. Conductor Size 25 x 3mm 457.2mm
  • RS Stock No. 124-2487
  • Mfr. Part No. 7TCA083550R0007 CP015
Each (In a Pack of 50)
MYR6.089
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 63A Curve D, 100 → 133V AC, 72V DC, 15 kA Breaking Capacity
  • RS Stock No. 791-3495
  • Mfr. Part No. A9F55163
Each
MYR244.56
RS PRO 4A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 247-3961
Each (In a Pack of 10)
MYR4.00
RS PRO 8A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9838
Each (In a Pack of 10)
MYR2.636
Schurter 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 2P
  • RS Stock No. 789-7851
  • Mfr. Part No. 4301.1403
Each
MYR28.28
Murrelektronik Limited Mico Pro Electronic Circuit Breaker 16A 24V 9000, 1 channels , DIN Rail
  • RS Stock No. 284-8053
  • Mfr. Part No. 9000-41011-1600000
Each
MYR273.36
Better World
ABB, XT3N MCCB 4P 160A, Fixed Mount
  • RS Stock No. 236-6657
  • Mfr. Part No. 1SDA068262R1 XT3N 250 TMG 160A FF
Each
MYR6,388.87
ABB F200 RCCB, 40A, 4 Pole, 500mA, Type A, 230/400V ac
  • RS Stock No. 177-5095
  • Mfr. Part No. 2CSF204201R4400 F204 A S-40/0,5
Each
MYR1,101.50
Siemens SENTRON Connection Unit for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 265-521
  • Mfr. Part No. 3VW9011-0AL78
Each
MYR1,488.31
Eaton 1.6A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9419
  • Mfr. Part No. S506-1.6-R
1 Bag of 1000
MYR816.95
ABB System Pro M Compact S200M MCB, 3P, 25A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 202-931
  • Mfr. Part No. 2CDS273001R0517
Each
MYR2,264.47
Europa RCBO, 6A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, EUBLMC Range
  • RS Stock No. 210-4736
  • Mfr. Part No. EUBLMC6C30A
Each
MYR279.89
Eaton 7.5A T Melamine Cartridge Fuse, 0.41 x 1.5in
  • RS Stock No. 260-747
  • Mfr. Part No. FNQ-R-7-1/2
1 Pack of 10
MYR3,339.17
Mersen 16A NH Fuse, NH000, 500V ac
  • RS Stock No. 270-3066
  • Mfr. Part No. K222097
Each (In a Box of 3)
MYR40.253
Better World
ABB, XT2S MCCB 4P 160A, Fixed Mount
  • RS Stock No. 236-7519
  • Mfr. Part No. 1SDA067838R1 XT2S 160 Ekip LS/I 160A 4P
Each
MYR5,115.85
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