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

56 of 999+
In Stock
Eaton 3.15A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9417
  • Mfr. Part No. S506-3.15-R
1 Bag of 1000
SGD1,131.90(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 32A Curve B, 253V AC, 72V DC, 20 kA Breaking Capacity
  • RS Stock No. 225-5991
  • Mfr. Part No. 2CDS251001R0325 S201 B 32A - 10 KA
Each
SGD30.27(exc. GST)
In Stock
ABB Tmax XT Rotary Handle for use with SACE Tmax XT
  • RS Stock No. 236-6856
  • Mfr. Part No. 1SDA069057R1 RHE_B XT2-XT4 F/P BASE RH
Each
SGD105.45(exc. GST)
In Stock
ABB 18 Way Plastic Consumer Unit, 125A, IP65 Mistral65
  • RS Stock No. 811-1896
  • Mfr. Part No. 1SL1203A00 65P18X12
Each
SGD50.11(exc. GST)
Temporarily out of stock
Better World
Schneider Electric GFP RCCB, 25A, 2 Pole, 26mA, 277V ac
  • RS Stock No. 211-2462
  • Mfr. Part No. M9R41225
Each
SGD404.64(exc. GST)
In Stock
Schurter 4A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-8109
  • Mfr. Part No. 0034.3123
Each (In a Pack of 10)
SGD0.692(exc. GST)
In Stock
Selco Thermal Fuse +109°C 10 A, 250V ac
  • RS Stock No. 111-7804
  • Mfr. Part No. SWTC-228-3535
Each (In a Pack of 10)
SGD3.169(exc. GST)
Temporarily out of stock
Eaton 380 → 440V ac/dc Shunt Trip Shunt trip for use with N(S)1(-4) Series, NZM1(-4) Series
  • RS Stock No. 454-8225
  • Mfr. Part No. 259728 NZM1-XA380-440AC/DC
Each
SGD184.39(exc. GST)
In Stock
Littelfuse 80A Natural BF1 Car Fuse, 32V dc
  • RS Stock No. 431-6731
  • Mfr. Part No. 153.5631.5801
Each (In a Pack of 5)
SGD4.822(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 32A, Fixed Mount
  • RS Stock No. 260-7646
  • Mfr. Part No. C11N3TM032L
Each
SGD778.35(exc. GST)
Temporarily out of stock
Eaton xComfort Distribution Board Enclosure, 12 Way
  • RS Stock No. 258-504
  • Mfr. Part No. 281691 BC-O-1/12-TW-ECO
Each
SGD78.54(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 A9F04 Circuit Breaker, 3P, 6A Curve C, 500V AC, 6000 A Breaking Capacity
  • RS Stock No. 655-490
  • Mfr. Part No. A9F04306
Each
SGD218.09(exc. GST)
In Stock
Better World
Schneider Electric RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3281
  • Mfr. Part No. A9DK1616
Each
SGD337.75(exc. GST)
In Stock
Eaton 250A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 182-1791
  • Mfr. Part No. 170M1571D
Each
SGD146.86(exc. GST)
Temporarily out of stock
ABB Front Terminal for use with S6 800, T6 800
  • RS Stock No. 250-4493
  • Mfr. Part No. 1SDA013954R1
Each
SGD297.49(exc. GST)
Temporarily out of stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 115A Current Rating
  • RS Stock No. 175-1500
  • Mfr. Part No. GV4P115S
Each
SGD1,395.53(exc. GST)
Temporarily out of stock
Eaton xEffect MCB, 2P, 6A Curve C, 240 → 415V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 847-3403
  • Mfr. Part No. 102164 FAZ-C6/2-NA
Each
SGD168.00(exc. GST)
In Stock
Eaton 208 → 250V ac/dc Shunt Trip Shunt trip for use with N(S)1(-4) Series, NZM1(-4) Series
  • RS Stock No. 454-8219
  • Mfr. Part No. 259726 NZM1-XA208-250AC/DC
Each
SGD192.68(exc. GST)
In Stock
Schneider Electric
  • RS Stock No. 610-1070
  • Mfr. Part No. GV1G10
Each
SGD10.69(exc. GST)
In Stock
Finder 3 Phase Surge Protector, 60kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 286-5004
  • Mfr. Part No. 7P1482751012
Each
SGD557.30(exc. GST)
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