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

387 Products showing for Fuses & Circuit Breakers

1 of 20
In Stock
Schneider Electric EZ9 RCCB, 100A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-224
  • Mfr. Part No. EZ9R46291
Subtotal (1 unit)
€44.99(exc. VAT)
In Stock
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 16 A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 654-654
  • Mfr. Part No. A9D56616
Subtotal (1 unit)
€116.00(exc. VAT)
Temporarily out of stock
Schneider Electric Copper Acti9 Acti9 3 Phase Busbar, 400 V ac, 9 mm Pitch
  • RS Stock No. 654-802
  • Mfr. Part No. A9XPC724
Subtotal (1 unit)
€71.59(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 iID RCCB, 25A, 2 Pole, 300mA, Type AC, 220 → 240V ac
  • RS Stock No. 654-768
  • Mfr. Part No. A9R41225
Subtotal (1 unit)
€159.31(exc. VAT)
Temporarily out of stock
Schneider Electric Resi9 Resi9 3 Phase Busbar, 400 V, 18 mm Pitch
  • RS Stock No. 655-491
  • Mfr. Part No. R9XFH311
Subtotal (1 unit)
€15.35(exc. VAT)
In Stock
Schneider Electric, ComPact NSX, I-Line Molded Case Circuit Breaker 1-Pole 80 A, Breaking Capacity 25 kA, Busbar
  • RS Stock No. 654-211
  • Mfr. Part No. IL0801P251
Subtotal (1 unit)
€197.92(exc. VAT)
In Stock
Schneider Electric Resi9 Resi9 3 Phase Busbar, 400 V, 18 mm Pitch
  • RS Stock No. 655-498
  • Mfr. Part No. R9XFH312
Subtotal (1 unit)
€16.60(exc. VAT)
In Stock
Schneider Electric 3 Phase Industrial Surge Protector, 20 kA, 1.1 kV, DIN Rail
  • RS Stock No. 654-797
  • Mfr. Part No. A9L20600
Subtotal (1 unit)
€693.07(exc. VAT)
Temporarily out of stock
Siemens 100 A Cartridge Fuse, 22 x 58 mm
  • RS Stock No. 665-093
  • Mfr. Part No. 3NC2200-5
Subtotal (1 pack of 5 units)
€214.58(exc. VAT)
Temporarily out of stock
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 32 A Current Rating, 3-Pole, 30 mA Trip
  • RS Stock No. 654-790
  • Mfr. Part No. A9DC3732
Subtotal (1 unit)
€213.07(exc. VAT)
Temporarily out of stock
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 6 A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 654-795
  • Mfr. Part No. A9DH3606
Subtotal (1 unit)
€273.76(exc. VAT)
In Stock
Schneider Electric Copper Acti9 Acti9 1 Phase Busbar, 230 V ac, 9 mm Pitch
  • RS Stock No. 654-752
  • Mfr. Part No. A9XPC648
Subtotal (1 unit)
€133.18(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPact NSX, I-Line Molded Case Circuit Breaker 3-Pole 125 A, Breaking Capacity 36 kA, Panel
  • RS Stock No. 654-703
  • Mfr. Part No. IL1253P36
Subtotal (1 unit)
€730.26(exc. VAT)
Temporarily out of stock
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 16 A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 654-744
  • Mfr. Part No. A9TDFD616
Subtotal (1 unit)
€510.84(exc. VAT)
Temporarily out of stock
Schneider Electric 12 Metal Consumer Unit, 100 A, RoHS, BS 7671:ed. 18, UKCA, amendment 3 BS EN 61439-3 IP3X, IP2X EZ9E
  • RS Stock No. 654-186
  • Mfr. Part No. EZ9E12MCCU
Subtotal (1 unit)
€69.88(exc. VAT)
Temporarily out of stock
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 40 A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 654-686
  • Mfr. Part No. A9DE3640
Subtotal (1 unit)
€264.92(exc. VAT)
Temporarily out of stock
Schneider Electric 10 Metal Consumer Unit, 100 A, RoHS, UKCA, amendment 3 BS EN 61439-3, BS 7671:ed. 18 IP2X, IP3X EZ9E
  • RS Stock No. 654-223
  • Mfr. Part No. EZ9E10MCCU
Subtotal (1 unit)
€63.88(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 Acti9 3 Phase Distribution Board 250 A 12 Way
  • RS Stock No. 654-762
  • Mfr. Part No. SEA9BPNAFD12
Subtotal (1 unit)
€487.31(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 Acti9 3 Phase Distribution Board 250 A 14 Way
  • RS Stock No. 654-722
  • Mfr. Part No. SEA9BPN8AFD6
Subtotal (1 unit)
€706.74(exc. VAT)
In Stock
Schneider Electric Copper Easy9 Easy9 1 Phase Busbar, 230 V ac, 9 mm Pitch
  • RS Stock No. 654-221
  • Mfr. Part No. SEPNB112
Subtotal (1 unit)
€63.54(exc. VAT)
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