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

68 of 999+
In Stock
Eaton 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8500
  • Mfr. Part No. C10M10
Each (In a Pack of 10)
SGD2.181(exc. GST)
In Stock
Eaton xEffect MCB, 3P, 20A Curve C, 230 → 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4605
  • Mfr. Part No. 239149 FAZ6-C20/3
Each
SGD147.07(exc. GST)
In Stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 259-416
  • Mfr. Part No. 281230 NZMB1-A160
Each
SGD1,262.56(exc. GST)
In Stock
Eaton RCD, 25A, 2 Pole, 30mA, Type B, 230V
  • RS Stock No. 922-8746
  • Mfr. Part No. 236269 PKNM-25/1N/B/003-A-MW
Each
SGD146.01(exc. GST)
In Stock
Eaton 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8500P
  • Mfr. Part No. C10M10
Each (Supplied in a Box)
SGD2.181(exc. GST)
In Stock
Eaton RCD, 16A, 2 Pole, 30mA, Type C
  • RS Stock No. 922-8721
  • Mfr. Part No. 236217 PKNM-16/1N/C/003-A-MW
Each
SGD211.23(exc. GST)
In Stock
SIBA 500mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3214
  • Mfr. Part No. 70-007-33/0.5A
Each (In a Pack of 10)
SGD0.832(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)
In Stock
RS PRO Residential RCCBs, 40A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 284-2369
Each
SGD64.28(exc. GST)
In Stock
SIBA 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 736-1422
  • Mfr. Part No. 50-199-06/10A
Each
SGD23.44(exc. GST)
In Stock
Eaton PC Board Non Resettable Fuse, Radial 1.6A, 250V ac
  • RS Stock No. 769-3416
  • Mfr. Part No. SS-5H-1-6A-BK
Each (In a Pack of 10)
SGD0.528(exc. GST)
In Stock
Rittal Earthing Kit
  • RS Stock No. 230-5203
  • Mfr. Part No. 5302027
Each
SGD63.85(exc. GST)
In Stock
Mersen 50A NH Fuse, NH00, 690V ac
  • RS Stock No. 270-3144
  • Mfr. Part No. Y228457
Each
SGD26.98(exc. GST)
In Stock
ABB System Pro M Compact S200M MCB, 1P, 10A Curve D, 230V AC, 72V DC, 15 kA Breaking Capacity
  • RS Stock No. 746-8131
  • Mfr. Part No. 2CDS271001R0101 S201M-D10
Each
SGD37.35(exc. GST)
In Stock
Littelfuse 2A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 738-2797
  • Mfr. Part No. 0218002.MXP
Each (In a Pack of 10)
SGD1.255(exc. GST)
Temporarily out of stock
Socomec 3 Phase Industrial Surge Protector, 40kA
  • RS Stock No. 224-2519
  • Mfr. Part No. 49821432
Each
SGD652.02(exc. GST)
Temporarily out of stock
Eaton xComfort Distribution Board Enclosure, 12 Way
  • RS Stock No. 256-888
  • Mfr. Part No. 281693 BC-O-2/24-TW-ECO
Each
SGD145.02(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti9 1 Phase Busbar, 230 V, 400 V, 9mm Pitch
  • RS Stock No. 238-4077
  • Mfr. Part No. A9XCT712
Each (In a Pack of 12)
SGD79.831(exc. GST)
Temporarily out of stock
Better World
ABB, XT3S MCCB 4P 200A, Fixed Mount
  • RS Stock No. 236-6647
  • Mfr. Part No. 1SDA068227R1 XT3S 250 TMD 200A 3P+N FF
Each
SGD1,462.99(exc. GST)
In Stock
Schurter 12.5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 865-7556
  • Mfr. Part No. 0034.3128
Each (In a Pack of 50)
SGD0.843(exc. GST)
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