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

40 of 999+
Temporarily out of stock
Eaton PFIM RCCB, 25A, 2 Pole, 30mA, Type F, Type G, 230V ac
  • RS Stock No. 242-950
  • Mfr. Part No. 187449 PFIM-25/2/003-G/F
Each
SGD283.36(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 125A Curve C, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3076
  • Mfr. Part No. A9N18369
Each
SGD701.29(exc. GST)
Temporarily out of stock
Hager MCCB 4P 160A, Breaking Capacity 2 kA, DIN Rail Mount
  • RS Stock No. 144-4932
  • Mfr. Part No. HCA161H
Each
SGD1,442.24(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 30A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-564
  • Mfr. Part No. 3VA5130-4ED31-1AA0
Each
SGD411.93(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200MUC MCB, 2P, 6A Curve K, 440V AC, 440V DC, 25 kA Breaking Capacity
  • RS Stock No. 231-9735
  • Mfr. Part No. 2CDS272061R0377 S202 MUC K 6A 10 KA
1 Box of 1
SGD375.33(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 32A Curve B, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 247-645
  • Mfr. Part No. 132690 FAZ-B32/1-NA
Each
SGD58.76(exc. GST)
Limited stock
Allen Bradley 1492 1492-SPM MCB, 1P, 6A Curve C, 277V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 125-1456
  • Mfr. Part No. 1492-SPM1C060
Each
SGD214.84(exc. GST)
Temporarily out of stock
ABB PBFC 3, 3+N Phase Busbar
  • RS Stock No. 200-511
  • Mfr. Part No. 1STQ007410A0000
Each
SGD614.47(exc. GST)
In Stock
Siemens 10A D01 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1051
  • Mfr. Part No. 5SE2310
Each (In a Pack of 10)
SGD1.836(exc. GST)
Temporarily out of stock
Sensata Airpax Airpax Thermal Circuit Breaker - AP7 Single Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0178
  • Mfr. Part No. AP7-1-51-203
Each
SGD798.51(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 1 Phase Distribution Board Enclosure, 34 Way
  • RS Stock No. 339-624
  • Mfr. Part No. SEA9BN8SXS
Each
SGD939.55(exc. GST)
In Stock
Weidmüller 2A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 286-0181
  • Mfr. Part No. 2783170000
1 Box of 5
SGD49.62(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 3130 2 Pole 240V Voltage Rating Snap In, 10A Current Rating
  • RS Stock No. 212-1985
  • Mfr. Part No. 3130-F120-P7T1-W02Q-10A
Each
SGD72.94(exc. GST)
In Stock
Eaton 10A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-4386
  • Mfr. Part No. LP-CC-10
Each
SGD109.84(exc. GST)
In Stock
Eaton 25A Clear Blade Car Fuse, 32V dc
  • RS Stock No. 852-7354
  • Mfr. Part No. ATC-25
Each
SGD1.92(exc. GST)
In Stock
Lovato ModuLo P2MB MCB, 3P, 100A Curve C, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 825-6163
  • Mfr. Part No. P2MB3PC100
Each
SGD240.30(exc. GST)
In Stock
Better World
Schneider Electric Vigi RCD, 63A, 2 Pole, 30mA
  • RS Stock No. 806-7193
  • Mfr. Part No. A9V02663
Each
SGD330.82(exc. GST)
Temporarily out of stock
Hager NQN MCB, 2P, 40A Curve B, 415V AC, 20 kA Breaking Capacity
  • RS Stock No. 597-864
  • Mfr. Part No. NQN240
Each
SGD281.30(exc. GST)
In Stock
Eaton, xEnergy MCCB 3P 200A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 628-8054
  • Mfr. Part No. 265725 NZMN2-M200
1 Box of 1
SGD1,302.87(exc. GST)
Temporarily out of stock
Schneider Electric, EasyPact Circuit breaker 4P 400A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 100-834
  • Mfr. Part No. EZC400H4350N
Each
SGD2,393.67(exc. GST)
1
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