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

50993 Products showing for Fuses & Circuit Breakers

1 of 999+
ETA Thermal Circuit Breaker - 106 Single Pole 240V Voltage Rating Panel Mount, 6A Current Rating
  • RS Stock No. 728-8642
  • Mfr. Part No. 106-P10-000040-6A
Each
€17.67(exc. VAT)
RS PRO Rail Mount Fuse Holder
  • RS Stock No. 501-871
Each
€11.58(exc. VAT)
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V Voltage Rating DIN Rail Mount, 40A Current
  • RS Stock No. 272-836
  • Mfr. Part No. GV3L40
Each
€204.41(exc. VAT)
Lovato 32A Fuse Holder for 10 x 38mm Fuse, 3P, 690V ac
  • RS Stock No. 188-1616
  • Mfr. Part No. FB01B3P
Each
€20.28(exc. VAT)
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 16A Current Rating
  • RS Stock No. 344-5333
  • Mfr. Part No. 1658-G21-02-P10-16A
Each
€5.83(exc. VAT)
ETA Thermal Circuit Breaker - 106-P10 Single Pole 240V ac Voltage Rating Panel Mount, 2.5A Current Rating
  • RS Stock No. 289-0549
  • Mfr. Part No. 106-P10-5A
Each
€19.38(exc. VAT)
TE Connectivity Thermal Circuit Breaker - W58 Single Pole 50 V dc, 250V ac Voltage Rating, 12A Current Rating
  • RS Stock No. 782-7962
  • Mfr. Part No. W58-XB1A4A-12
Each
€8.15(exc. VAT)
Eaton 50A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 703-8469
  • Mfr. Part No. C22G50
Each (In a Pack of 10)
€4.234(exc. VAT)
Mersen 2A Slow-Blow Ceramic Cartridge Fuse, 8.5 x 31.5mm
  • RS Stock No. 247-2878
  • Mfr. Part No. R218193
1 Box of 10
€15.04(exc. VAT)
RS PRO 1A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-380
Each (In a Pack of 10)
€0.331(exc. VAT)
ETA Thermal Circuit Breaker - 1658, 25A Current Rating
  • RS Stock No. 288-4022
  • Mfr. Part No. 1658-G21-02-P10-25A
Each
€6.25(exc. VAT)
RS PRO Earthing Strap Metal 12 → 32mm Diameter
  • RS Stock No. 390-2448
1 Pack of 10
€20.85(exc. VAT)
Better World
ABB System Pro M Compact S200 MCB, 3P, 50A Curve D, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 527-9661
  • Mfr. Part No. 2CDS253001R0501 S203-D50
Each
€85.22(exc. VAT)
RS PRO 1.25A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 611-9093
Each (In a Pack of 10)
€1.114(exc. VAT)
ABB Tmax XT Handle, Lockable for use with Circuit Breaker
  • RS Stock No. 231-9359
  • Mfr. Part No. 1SDA104843R1 RHE XT5 F/P
Each
€177.51(exc. VAT)
Eaton xPole MCB, 1P, 16A Curve C, 230V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 864-4327
  • Mfr. Part No. 242206 PLSM-C16-MW
Each
€25.22(exc. VAT)
RS PRO PC Board Non Resettable Fuse, Radial 5A, 250V ac
  • RS Stock No. 767-5064
Each (In a Pack of 10)
€0.38(exc. VAT)
ABB 220 → 240 V ac, 220 → 250V dc Shunt Trip Shunt trip for use with Tmax XT1, Tmax XT2, Tmax XT3, Tmax
  • RS Stock No. 831-9197
  • Mfr. Part No. 1SDA066325R1
Each
€110.70(exc. VAT)
Eaton 13A F Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 412-605
  • Mfr. Part No. TDC180-13A
Each (In a Pack of 10)
€0.636(exc. VAT)
RS PRO Earthing Kit
  • RS Stock No. 528-983
Each
€23.53(exc. VAT)
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