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

43 of 999+
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 2A Curve C, 250V DC
  • RS Stock No. 772-1505
  • Mfr. Part No. A9N61502
Each
SGD48.22(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 3A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 131-999
  • Mfr. Part No. 2CDS272001R0034 S202M-C3
Each
SGD110.24(exc. GST)
In Stock
WJ Furse Copper Earth Bar L. 400mm x W. 90mm x H. 90mm 6 Ways
  • RS Stock No. 124-2496
  • Mfr. Part No. 7TCA083670R0739 LK245-6
Each
SGD312.78(exc. GST)
In Stock
Better World
Schneider Electric Easy 9 EZ9 MCB, 1P, 32A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 850-8619
  • Mfr. Part No. EZ9F16132
Each
SGD6.79(exc. GST)
In Stock
Eaton xEffect MCB, 2P, 16A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4564
  • Mfr. Part No. 239103 FAZ6-C16/2
Each
SGD99.07(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 63A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3366
  • Mfr. Part No. A9F54263
Each
SGD160.28(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 20A Curve K, 400V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-8009
  • Mfr. Part No. 2CDS252001R0487 S202-K20
Each
SGD103.52(exc. GST)
In Stock
Lovato 32A Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 248-5509
  • Mfr. Part No. FB01B1PL
Each
SGD24.10(exc. GST)
In Stock
Schneider Electric, ComPacT MCCB 4P 250A, Breaking Capacity 40 kA, Fixed Mount
  • RS Stock No. 260-7867
  • Mfr. Part No. C25B4
Each
SGD1,601.62(exc. GST)
Temporarily out of stock
Eaton 3A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8213
  • Mfr. Part No. PV-3A10F
Each
SGD17.34(exc. GST)
In Stock
Siemens ALPHA Busbar
  • RS Stock No. 226-0833
  • Mfr. Part No. 8GK9733-0KK30
Each
SGD119.22(exc. GST)
In Stock
Schurter 32A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 144-1830
  • Mfr. Part No. 8020.5026.G
Each (In a Bag of 10)
SGD1.723(exc. GST)
Temporarily out of stock
Better World
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 232-0271
  • Mfr. Part No. 1SDA068126R1 XT4N 250 Ekip LS/I 250A FF
Each
SGD1,490.97(exc. GST)
Temporarily out of stock
Siemens 35A Diazed Fuse, gG, 690/600V ac/dc
  • RS Stock No. 167-694
  • Mfr. Part No. 5SD8035
1 Pack of 5
SGD228.72(exc. GST)
Last RS stock
Mersen Surge Protector
  • RS Stock No. 179-3057
  • Mfr. Part No. 83120145 / STPT12-12K275V-4PM
Each
SGD720.69(exc. GST)
Temporarily out of stock
Schneider Electric Acti 9 Plug-in Base for use with ARA, IC60, iDPN Vigi, iLD, ISW, ISW-NA, RCA, Reflex iC60
  • RS Stock No. 791-2761
  • Mfr. Part No. A9A27003
Each
SGD87.40(exc. GST)
In Stock
SIBA 35A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 421-671
  • Mfr. Part No. 20-000-13/35E1
Each (In a Pack of 3)
SGD12.113(exc. GST)
In Stock
TE Connectivity Thermal Circuit Breaker - W28 SP Pole 32 V dc, 250 V ac Voltage Rating Panel Mount, 15A Current Rating
  • RS Stock No. 167-5699
  • Mfr. Part No. W28-XQ1A-15
Each
SGD10.24(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 10A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3341
  • Mfr. Part No. A9F54210
Each
SGD226.72(exc. GST)
Temporarily out of stock
Schneider Electric Acti 9 Acti9 iDT40N XA MCB, 3+N, 40A Curve C, 400V AC
  • RS Stock No. 238-3439
  • Mfr. Part No. A9PA4740
Each
SGD444.28(exc. GST)
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