Over 800,000 products available

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

52170 Products showing for Fuses & Circuit Breakers

8 of 999+
In Stock
Eaton 20A British Standard Fuse A1 550V ac, 44.5 mm
  • RS Stock No. 413-311
  • Mfr. Part No. NITD20
Subtotal (1 pack of 5 units)
£22.27(exc. VAT)
£22.27/pack
In Stock
Eaton 50A British Standard Fuse A3 660V ac, 73 mm
  • RS Stock No. 415-216
  • Mfr. Part No. TIS50
Subtotal (1 unit)
£16.98(exc. VAT)
£16.98/unit
In Stock
RS Better World
ABB System Pro M Compact S200M Miniature Circuit Breaker, 4-Pole, 50A, Type C, 400V ac AC, 125 V dc DC, 15 kA Breaking
  • RS Stock No. 231-9777
  • Mfr. Part No. 2CDS274001R0504 S204M C 50A - 15 KA
Subtotal (1 box of 1 unit)
£147.25(exc. VAT)
£147.25/box
In Stock
RS Better World
Siemens SENTRON 5SL6 Miniature Circuit Breaker, 1-Pole, 2A, Type C, 400V ac AC, 72 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 202-7172
  • Mfr. Part No. 5SL6102-7
Subtotal (1 unit)
£19.30(exc. VAT)
£19.30/unit
In Stock
Eaton 2A British Standard Fuse A1 550V ac, 44.5 mm
  • RS Stock No. 415-109
  • Mfr. Part No. NIT2
Subtotal (1 pack of 5 units)
£27.39(exc. VAT)
£5.478/unit
In Stock
Europa EUR1 Series Residual Current Circuit Breaker, 40A, 4-Pole, 30 mA, Type A, 10 kA 415V ac
  • RS Stock No. 210-4753
  • Mfr. Part No. EUR140.30/4A
Subtotal (1 unit)
£66.91(exc. VAT)
£66.91/unit
In Stock
SIBA 160A Centred Tag Fuse NH1 500V ac
  • RS Stock No. 421-772
  • Mfr. Part No. 20-003-13/160A
Subtotal (1 unit)
£11.64(exc. VAT)
£11.64/unit
In Stock
RS Better World
Siemens SENTRON 5SY4 Miniature Circuit Breaker, 1-Pole, 32A, Type C, 400V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 383-2068
  • Mfr. Part No. 5SY4132-7
Subtotal (1 unit)
£19.78(exc. VAT)
£19.78/unit
In Stock
RS PRO 10A In-line Fuse Holder for 5 x 20 mm, 250V
  • RS Stock No. 237-5259
Subtotal (1 unit)
£2.34(exc. VAT)
£2.34/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 10A, Type B, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3228
  • Mfr. Part No. A9F53310
Subtotal (1 unit)
£109.54(exc. VAT)
£109.54/unit
In Stock
Eaton 63A Rail Mount Fuse Holder for A2, 1P-Pole, 690V ac
  • RS Stock No. 413-923
  • Mfr. Part No. RS63H
Subtotal (1 unit)
£25.94(exc. VAT)
£25.94/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 25A, Type D, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3571
  • Mfr. Part No. A9F55325
Subtotal (1 unit)
£117.64(exc. VAT)
£117.64/unit
In Stock
Eaton MEM Shield EMCH Miniature Circuit Breaker, 1-Pole, 32A, Type C, 240V ac AC, 48 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 124-3037
  • Mfr. Part No. EMCH132 EMCH132
Subtotal (1 unit)
£24.15(exc. VAT)
£24.15/unit
In Stock
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 6A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 790-9260
  • Mfr. Part No. A9D11806
Subtotal (1 unit)
£148.47(exc. VAT)
£148.47/unit
In Stock
ABB System Pro M Compact System Pro M Compact Miniature Circuit Breaker, 1-Pole, 16A, Type C, 253V ac AC, 72 V dc DC, 10
  • RS Stock No. 535-4150
  • Mfr. Part No. 2CDS271001R0164 S201M-C16
Subtotal (1 unit)
£18.34(exc. VAT)
£18.34/unit
In Stock
Littelfuse 5A Brown Car Fuse, 32V dc
  • RS Stock No. 787-4108
  • Mfr. Part No. 0287005.PXCN
Subtotal (1 pack of 10 units)
£2.65(exc. VAT)
£2.65/pack
In Stock
TE Connectivity W58 Thermal Circuit Breaker - 1-Pole, Direct, 15A Current Rating, 1000 A, 250V ac, 50 V dc
  • RS Stock No. 782-0902
  • Mfr. Part No. W58-XB1A4A-15
Subtotal (1 unit)
£6.61(exc. VAT)
£6.61/unit
In Stock
Eaton PLG6 PLG6 Miniature Circuit Breaker, 1-Pole, 2A, Type C, 230V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 230-1095
  • Mfr. Part No. 264690 PLG6-C2/1N
Subtotal (1 unit)
£15.37(exc. VAT)
£15.37/unit
In Stock
Mersen 315A NH Fuse NH2 500V ac
  • RS Stock No. 136-0602
  • Mfr. Part No. K219820 / NH2GG50V315-1
Subtotal (1 unit)
£26.47(exc. VAT)
£26.47/unit
In Stock
Eaton 63A British Standard Fuse A3 660V ac, 73 mm
  • RS Stock No. 415-222
  • Mfr. Part No. TIS63
Subtotal (1 unit)
£18.49(exc. VAT)
£18.49/unit
1
8
2609
Results per page

Guides & Articles

RCBOs Guide
There are many things to consider when choosing the right RCBO. Find out more in our comprehensive RCBOs guide.
Read more
Fuses Guide
Our fuses guide explains what they are, what they are used for, how they work, and the different types available.
Read more
Distribution Boards Guide
Our distribution boards guide explains what they are, their uses and types, and how to connect distribution boards.
Read more
MCBs Guide
What are MCBs and how do they work? Discover all you need to know in our comprehensive guide.
Read more

Related links

Be the first to know about our latest products and offers

Email address

The personal information you provide to us when signing up to this mailing list will be processed in line with the Privacy Policy