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

46483 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
SIBA 500mA T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 783-3286
  • Mfr. Part No. 70-007-65/0.5A
Subtotal (1 pack of 10 units)
HK$79.30
Temporarily out of stock
Eaton 6A T Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 852-7083
  • Mfr. Part No. MDA-6-R
Subtotal (1 unit)
HK$56.30
In Stock
Eaton 12A T Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 852-7049
  • Mfr. Part No. MDA-12-R
Subtotal (1 unit)
HK$58.00
In Stock
Phoenix Contact Mounting Base for use with PT Series
  • RS Stock No. 768-1195
  • Mfr. Part No. 2839363
Subtotal (1 unit)
HK$909.80
In Stock
Eaton 32A Rail Mount Fuse Holder, 1P-Pole, 550V ac
  • RS Stock No. 418-495
  • Mfr. Part No. 32NNSF
Subtotal (1 unit)
HK$118.50
Stocked by manufacturer
Better World
Siemens, SENTRON, SENTRON Molded Case Circuit Breaker 4-Pole 100A, Breaking Capacity 10 kA, Surface
  • RS Stock No. 210-1613
  • Mfr. Part No. 3VA1110-5EE42-0AA0
Subtotal (1 unit)
HK$7,525.50
In Stock
SIBA 5A F Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 783-3251
  • Mfr. Part No. 70-007-33/5A
Subtotal (1 pack of 10 units)
HK$45.20
In Stock
Bourns 0.5 A Resettable Fuse, 15V
  • RS Stock No. 647-8156
  • Mfr. Part No. MF-MSMF050-2
Subtotal (1 pack of 10 units)
HK$25.30
In Stock
Eaton 16A gG/gL Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 229-265
  • Mfr. Part No. C10G16 CYLINDRICAL FUSE 10 x 38 16A GG 500V AC
Subtotal (1 pack of 10 units)
HK$109.00
In Stock
Littelfuse 10A F Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 769-0079
  • Mfr. Part No. 0314010.HXP
Subtotal (1 pack of 10 units)
HK$78.20
In Stock
Bourns 1.85 A Resettable Fuse, 15 V
  • RS Stock No. 245-9147
  • Mfr. Part No. MF-LSMF185X-2
Subtotal (1 tape of 10 units)
HK$32.30
In Stock
Bourns 1.25 A Resettable Fuse, 15 V
  • RS Stock No. 245-9137
  • Mfr. Part No. MF-LSMF125X-2
Subtotal (1 tape of 10 units)
HK$26.60
In Stock
Eaton 1.25A F Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 848-2740
  • Mfr. Part No. AGC-1-1/4-R
Subtotal (1 unit)
HK$12.50
In Stock
Mersen 25A GG Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 247-2931
  • Mfr. Part No. W212585 / FR10GG50V25I
Subtotal (1 box of 10 units)
HK$475.60
In Stock
RS PRO 3A T Glass Cartridge Fuse, 5.2 x 20 mm
  • RS Stock No. 668-6007
Subtotal (1 pack of 10 units)
HK$34.20
In Stock
Bourns 1.5 A Resettable Fuse, 15V
  • RS Stock No. 647-8112
  • Mfr. Part No. MF-SM150-2
Subtotal (1 pack of 10 units)
HK$31.40
In Stock
Socomec 25A F Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 223-2796
  • Mfr. Part No. 60130025
Subtotal (1 pack of 10 units)
HK$120.00
Temporarily out of stock
Eaton 32A Rail Mount Fuse Holder for A2, 2P-Pole, 690V ac
  • RS Stock No. 765-2945
  • Mfr. Part No. CHM2DU
Subtotal (1 unit)
HK$101.40
In Stock
Eaton 4A British Standard Fuse A1 550V ac, 44.5 mm
  • RS Stock No. 415-115
  • Mfr. Part No. NIT4
Subtotal (1 pack of 5 units)
HK$566.60
In Stock
Schurter 6.3 A In-line Fuse Holder for 6.3 x 32 mm, 32 V dc, 32 V ac
  • RS Stock No. 173-7933
  • Mfr. Part No. 8601.2001.08
Subtotal (1 box of 50 units)
HK$648.40
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