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
Fuses - PCB
Fuses - PCB

52383 Products showing for Fuses & Circuit Breakers

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1 of 999+
In Stock
Schurter T12 T12 Thermal Circuit Breaker - 1-Pole, Panel, 2A Current Rating, 200 A, 240V ac, 28 V dc
  • RS stock no. 284-6072
  • Mfr. Part No. 4410.0126
Subtotal (1 unit)
R 708,46(exc. VAT)
R 708,46/unit
In Stock
Panasonic Non-Resettable Fuse 5A, 32V dc
  • RS stock no. 759-4795
  • Mfr. Part No. ERBRE5R00V
Subtotal (1 pack of 10 units)
R 40,79(exc. VAT)
R 4,079/unit
In Stock
TE Connectivity W54 Thermal Circuit Breaker - 1-Pole, Direct, 20A Current Rating, 1000 A, 250V ac, 50 V dc
  • RS stock no. 782-7988
  • Mfr. Part No. W54-XB1A4A10-20
Subtotal (1 unit)
R 96,22(exc. VAT)
R 96,22/unit
In Stock
RS Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 3-Pole, 2A, Type C, 400V ac AC, 6 kA Breaking Capacity
  • RS stock no. 746-7740
  • Mfr. Part No. 2CDS253001R0024 S203-C2
Subtotal (1 unit)
R 1 704,80(exc. VAT)
R 1 704,80/unit
In Stock
ABB System Pro M Compact SU200 M Miniature Circuit Breaker, 3-Pole, 6A, Type C, 400V ac AC, 400 V dc DC, 10 kA Breaking
  • RS stock no. 231-9757
  • Mfr. Part No. 2CDS273337R0064 SU203M-C6
Subtotal (1 box of 1 unit)
R 3 989,43(exc. VAT)
R 3 989,43/box
In Stock
Littelfuse 80A Natural Car Fuse, 32V dc
  • RS stock no. 431-6731
  • Mfr. Part No. 153.5631.5801
Subtotal (1 pack of 5 units)
R 432,19(exc. VAT)
R 86,438/unit
In Stock
ETA 6 to 30 A 1610 Thermal Circuit Breaker - 1-Pole, Base, 15A Current Rating, 25 A, 32V ac, 48 V dc
  • RS stock no. 409-895
  • Mfr. Part No. 1610-21-15A
Subtotal (1 unit)
R 210,30(exc. VAT)
R 210,30/unit
In Stock
ETA 6 to 30 A 1610 Thermal Circuit Breaker - 1-Pole, Base, 10A Current Rating, 25 A, 24V ac, 48 V dc
  • RS stock no. 409-889
  • Mfr. Part No. 1610-21-10A
Subtotal (1 unit)
R 210,30(exc. VAT)
R 210,30/unit
In Stock
RS Better World
Siemens, SENTRON, 3VA1 Molded Case Circuit Breaker 3-Pole 250A, Breaking Capacity 55 kA
  • RS stock no. 209-7030
  • Mfr. Part No. 3VA1225-5EF32-0AA0
Subtotal (1 unit)
R 15 663,31(exc. VAT)
R 15 663,31/unit
In Stock
ETA Thermal Overcurrent Circuit Breakers 2-5700 Thermal Circuit Breaker - 1-Pole, Panel, 1A Current Rating, 1 A, 250V
  • RS stock no. 405-9113
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-1A
Subtotal (1 unit)
R 523,32(exc. VAT)
R 523,32/unit
In Stock
Schneider Electric Multi9 Multi9 Miniature Circuit Breaker, 3-Pole, 32A, Type C, 15 kA Breaking Capacity
  • RS stock no. 211-2376
  • Mfr. Part No. M9F22332
Subtotal (1 unit)
R 2 965,43(exc. VAT)
R 2 965,43/unit
In Stock
Eaton 2A T Glass Cartridge Fuse, 5 x 20 mm
  • RS stock no. 537-1341
  • Mfr. Part No. S506-2-R
Subtotal (1 pack of 10 units)
R 41,76(exc. VAT)
R 4,176/unit
In Stock
ETA 6 to 30 A 1610 Thermal Circuit Breaker - 1-Pole, Base, 20A Current Rating, 25 A, 32V ac, 48 V dc
  • RS stock no. 409-902
  • Mfr. Part No. 1610-21-20A
Subtotal (1 unit)
R 199,02(exc. VAT)
R 199,02/unit
In Stock
SIBA 200A White Car Fuse, 80V dc
  • RS stock no. 161-1834
  • Mfr. Part No. 9005805.200
Subtotal (1 unit)
R 132,52(exc. VAT)
R 132,52/unit
In Stock
ETA 6 to 30 A 1610 Thermal Circuit Breaker - 1-Pole, Base, 25A Current Rating, 25 A, 32V ac, 48 V dc
  • RS stock no. 409-918
  • Mfr. Part No. 1610-21-25A
Subtotal (1 unit)
R 209,96(exc. VAT)
R 209,96/unit
In Stock
Murrelektronik Limited MICO Electronic Circuit Breaker 10A 24V, 4 channels, DIN Rail
  • RS stock no. 123-6691
  • Mfr. Part No. 9000-41034-0401005
Subtotal (1 unit)
R 4 107,59(exc. VAT)
R 4 107,59/unit
In Stock
ETA 1610 Thermal Circuit Breaker - 1-Pole, Panel, 30A Current Rating, 200 A, 250V ac, 32 V dc
  • RS stock no. 150-085
  • Mfr. Part No. 1610-21-30A
Subtotal (1 unit)
R 210,30(exc. VAT)
R 210,30/unit
In Stock
ETA Thermal Overcurrent Circuit Breakers 2-5700 Thermal Circuit Breaker - 1-Pole, Panel, 2.5A Current Rating, 2.5 A,
  • RS stock no. 405-9129
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-2.5A
Subtotal (1 unit)
R 572,44(exc. VAT)
R 572,44/unit
In Stock
RS PRO 30A In-line Fuse Holder for 19 x 18.6 mm, 32V dc
  • RS stock no. 284-6489
Subtotal (1 pack of 5 units)
R 490,42(exc. VAT)
R 98,084/unit
In Stock
Eaton 500A Centred Tag Fuse NH3 690V ac
  • RS stock no. 703-8807
  • Mfr. Part No. 500NHG3B-690
Subtotal (1 unit)
R 772,20(exc. VAT)
R 772,20/unit
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