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

50914 Products showing for Fuses & Circuit Breakers

1 of 510
Murrelektronik Limited Electronic Circuit Breaker
  • RS Stock No. 123-6688
  • Mfr. Part No. 9000-41034-0100400
Each
£130.53(exc. VAT)
RS PRO HBC, LBC Fuse Kit
  • RS Stock No. 420-252
1 Kit
£61.37(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 6A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3290
  • Mfr. Part No. A9F54106
Each
£27.19(exc. VAT)
Eaton PXF-A RCCB, 40A, 3+N Pole, 30mA, Type A, 400V ac
  • RS Stock No. 490-466
  • Mfr. Part No. 236776 PXF-40/4/003-A
Each
£44.32(exc. VAT)
RS PRO 5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-532
1 Pack of 10
£2.78(exc. VAT)
Eaton 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8386
  • Mfr. Part No. C10G10
1 Pack of 10
£11.01(exc. VAT)
Eaton 32A British Standard Fuse, A2, 550V ac, 73mm
  • RS Stock No. 413-377
  • Mfr. Part No. AAO32
1 Pack of 5
£33.16(exc. VAT)
RS PRO Rail Mount Fuse Holder
  • RS Stock No. 501-871
Each
£9.65(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 80A, Fixed Mount
  • RS Stock No. 260-9435
  • Mfr. Part No. C10F3TM080
Each
£561.47(exc. VAT)
Siemens ALPHA Busbar
  • RS Stock No. 226-0831
  • Mfr. Part No. 8GK9733-0KK10
Each
£36.83(exc. VAT)
RS PRO MCB, 1P, 6A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0204
Each
£8.57(exc. VAT)
Schneider Electric Acti9 1 Phase Distribution Board, 6 Way, 125 A
  • RS Stock No. 244-967
  • Mfr. Part No. SE125A6
Each
£111.96(exc. VAT)
RS PRO 1A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-380
1 Pack of 10
£2.78(exc. VAT)
RS PRO 3A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 668-5963
1 Pack of 10
£3.17(exc. VAT)
RS PRO 10A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 413-248
1 Pack of 10
£10.20(exc. VAT)
Eaton 63A British Standard Fuse, A3, 660V ac, 73mm
  • RS Stock No. 415-222
  • Mfr. Part No. TIS63
Each
£18.49(exc. VAT)
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8543
Each
£144.51(exc. VAT)
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 273-0860
  • Mfr. Part No. 1658-G21-02-P10-10A
Each
£4.86(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 50A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3401
  • Mfr. Part No. A9F54350
Each
£133.61(exc. VAT)
Rittal Earth Bar L. 450mm x W. 15mm x H. 5mm
  • RS Stock No. 826-2868
  • Mfr. Part No. 7113000
Each
£36.33(exc. VAT)
Eaton 16A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 414-639
  • Mfr. Part No. NIT16
1 Pack of 5
£30.22(exc. VAT)
RS PRO 2A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-609
1 Pack of 10
£2.86(exc. VAT)
RS PRO 500mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-633
1 Pack of 10
£2.85(exc. VAT)
RS PRO Residential RCCBs, 25A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 284-2367
Each
£27.48(exc. VAT)
Better World
Schneider Electric 110V ac/dc Remote Tripping Device Circuit Trip for use with LR3D Series, LRD Series
  • RS Stock No. 744-6973
  • Mfr. Part No. LAD703F
Each
£71.70(exc. VAT)
ABB 4 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1880
  • Mfr. Part No. 1SL1200A00 65P04X12
Each
£23.18(exc. VAT)
Eaton 16A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8399
  • Mfr. Part No. C10G16
1 Pack of 10
£11.01(exc. VAT)
Eaton 40A British Standard Fuse, A3, 660V ac, 73mm
  • RS Stock No. 415-200
  • Mfr. Part No. TIS40
Each
£16.27(exc. VAT)
Better World
Schneider Electric Acti 9 A9N1 MCB, 3P, 125A Curve D
  • RS Stock No. 219-8302
  • Mfr. Part No. A9N18514
Each
£333.86(exc. VAT)
Eaton 16A British Standard Fuse, A2, 660V ac, 73mm
  • RS Stock No. 415-143
  • Mfr. Part No. TIA16
1 Pack of 5
£44.65(exc. VAT)
RS PRO 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 277-3922
Each (In a Pack of 5)
£2.982(exc. VAT)
RS PRO MCB, 2P, 6A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0186
Each
£18.87(exc. VAT)
ETA Thermal Magnetic Circuit Breaker - 201 Single Pole, 2A Current Rating
  • RS Stock No. 333-243
  • Mfr. Part No. 201-2A
Each
£38.45(exc. VAT)
Eaton 45A British Standard Fuse, 660V, 61.8mm
  • RS Stock No. 414-897
  • Mfr. Part No. GSGB45
Each (In a Pack of 5)
£23.766(exc. VAT)
Eaton RCCB, 63A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 227-0738
  • Mfr. Part No. 267448 PFGM-63/2/003-A
Each
£66.44(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 6A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3332
  • Mfr. Part No. A9F54206
Each
£80.18(exc. VAT)
TE Connectivity Thermal Circuit Breaker - W58 Single Pole 50 V dc, 250V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 782-0892
  • Mfr. Part No. W58-XB1A4A-10
Each
£6.74(exc. VAT)
Eaton 80A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 703-8471
  • Mfr. Part No. C22G80
1 Pack of 10
£36.16(exc. VAT)
Eaton 20A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 413-311
  • Mfr. Part No. NITD20
1 Pack of 5
£22.27(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 10A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3293
  • Mfr. Part No. A9F54110
Each
£24.20(exc. VAT)
Schurter 10A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 789-7842
  • Mfr. Part No. 0034.1526
1 Bag of 10
£3.86(exc. VAT)
Eaton 20A Rail Mount Fuse Holder for A1 Fuse, 1P, 690V ac
  • RS Stock No. 221-601
  • Mfr. Part No. RS20P/G/WHI
Each
£33.26(exc. VAT)
Eaton 200A British Standard Fuse, B2, 415V ac, 111mm
  • RS Stock No. 156-8709
  • Mfr. Part No. DD200
Each
£27.68(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 32A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3398
  • Mfr. Part No. A9F54332
Each
£106.92(exc. VAT)
Eaton 3A F Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 412-560
  • Mfr. Part No. TDC180-3A
Each (In a Pack of 10)
£0.614(exc. VAT)
Better World
Schneider Electric Busbar Tap-Off Unit with Circuit Breaker, Canalis KS Series
  • RS Stock No. 211-0513
  • Mfr. Part No. KSB63SM48
Each
£228.05(exc. VAT)
Eaton 2A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 415-109
  • Mfr. Part No. NIT2
Each (In a Pack of 5)
£5.478(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB Mini Circuit Breaker, 2P, 1A Curve C, 12 → 133 V, 220 → 240 V, 380
  • RS Stock No. 791-3322
  • Mfr. Part No. A9F54201
Each
£102.92(exc. VAT)
Better World
Schneider Electric Acti 9 3 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2730
  • Mfr. Part No. A9XPH324
Each
£64.47(exc. VAT)
RS PRO 10A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 414-061
1 Pack of 10
£10.98(exc. VAT)
Europa Blanking Plate
  • RS Stock No. 201-7936
  • Mfr. Part No. ECUBP
1 Pair
£4.01(exc. VAT)
Better World
Schneider Electric Acti 9 1 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2718
  • Mfr. Part No. A9XPH124
Each
£28.72(exc. VAT)
Eaton 2A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 489-4405
  • Mfr. Part No. C10G2
1 Pack of 10
£11.12(exc. VAT)
Eaton 6A British Standard Fuse, 240V, 35mm
  • RS Stock No. 181-8539
  • Mfr. Part No. LST6
1 Box of 20
£103.84(exc. VAT)
ABB System Pro M Compact S200M MCB, 1P, 6A Curve C, 253V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 535-4138
  • Mfr. Part No. 2CDS271001R0064 S201M-C6
Each
£19.86(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 16A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3297
  • Mfr. Part No. A9F54116
Each
£24.20(exc. VAT)
Eaton xEffect MCB, 1P, 16A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4560
  • Mfr. Part No. 239037 FAZ6-C16/1
Each
£20.67(exc. VAT)
Eaton 10A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 414-623
  • Mfr. Part No. NIT10
Each (In a Pack of 5)
£5.478(exc. VAT)
Eaton 20A British Standard Fuse, A2, 660V ac, 73mm
  • RS Stock No. 415-159
  • Mfr. Part No. TIA20
1 Pack of 5
£46.66(exc. VAT)
WISKA Earthing Nut
  • RS Stock No. 700-0818
  • Mfr. Part No. EN20
1 Pack of 6
£25.00(exc. VAT)
Schneider Electric EZ9R RCCB, 63A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-804
  • Mfr. Part No. EZ9R46263
Each
£49.98(exc. VAT)
Eaton 3.15A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1509
  • Mfr. Part No. S505-3.15-R
1 Pack of 10
£2.22(exc. VAT)
Eaton 2A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1341
  • Mfr. Part No. S506-2-R
1 Pack of 10
£1.77(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 2A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3326
  • Mfr. Part No. A9F54202
Each
£92.21(exc. VAT)
RS PRO 6.3A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-425
1 Pack of 10
£2.85(exc. VAT)
Better World
Schneider Electric Acti 9 Connector Monoconnect for use with Acti 9/Multi 9, Horizontal Comb Busbar for 18 mm Pitch
  • RS Stock No. 806-7405
  • Mfr. Part No. A9XPCM04
Each
£50.82(exc. VAT)
Schneider Electric ComPacT NSX Rotary Handle for use with NSX250
  • RS Stock No. 272-7480
  • Mfr. Part No. LV432603T
Each
£243.00(exc. VAT)
Legrand Plexo 1 Phase Distribution Board, 3 Way, 32 A
  • RS Stock No. 180-6098
  • Mfr. Part No. 0 019 02
Each
£64.27(exc. VAT)
RS PRO 32A British Standard Fuse, A2, 550V ac, 73mm
  • RS Stock No. 521-2624
Each (In a Pack of 5)
£5.038(exc. VAT)
RS PRO 20A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 521-2523
1 Pack of 5
£19.75(exc. VAT)
Penta Earth Rod W. 16mm x 500mm
  • RS Stock No. 248-5335
  • Mfr. Part No. PIQTER500
Each
£49.72(exc. VAT)
Eaton 125A Bolted Tag Fuse, B2, 415V ac, 133mm
  • RS Stock No. 181-8525
  • Mfr. Part No. EFS125
Each
£19.01(exc. VAT)
Eaton 50A British Standard Fuse, A3, 660V ac, 73mm
  • RS Stock No. 415-216
  • Mfr. Part No. TIS50
Each
£16.98(exc. VAT)
Better World
Schneider Electric Acti9 Acti9 iDT40K MCB, 1+N, 10A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 238-3411
  • Mfr. Part No. A9P71610
Each
£26.13(exc. VAT)
Schneider Electric Removable Lock for use with Compact NB400, Compact NB600, Compact NG160, Compact NR100, Compact
  • RS Stock No. 188-1209
  • Mfr. Part No. 29370
Each
£25.78(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 32A Curve D, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3574
  • Mfr. Part No. A9F55332
Each
£112.28(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)
£0.548(exc. VAT)
Eaton 20A Rail Mount Fuse Holder for A1 Fuse, 1P, 690V ac
  • RS Stock No. 221-594
  • Mfr. Part No. RS20P/G/BLK
Each
£24.50(exc. VAT)
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 15A Current Rating
  • RS Stock No. 273-0882
  • Mfr. Part No. 1658-G21-02-P10-15A
Each
£4.86(exc. VAT)
Eaton 1A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8368
  • Mfr. Part No. C10G1
1 Pack of 10
£10.78(exc. VAT)
Better World
ABB System Pro M Compact S200M MCB, 2P, 2A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 132-009
  • Mfr. Part No. 2CDS272001R0024 S202M-C2
Each
£60.38(exc. VAT)
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)3(-4), NZM3(-4), PN3(-4)
  • RS Stock No. 255-175
  • Mfr. Part No. 260182 NZM3-XTVDVR
Each
£198.13(exc. VAT)
Schurter Thermal Circuit Breaker - T13 Single Pole 28 V dc, 240V ac Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 868-8914
  • Mfr. Part No. 4411.0011
Each
£13.53(exc. VAT)
Eaton 125A British Standard Fuse, B2, 415V ac, 111mm
  • RS Stock No. 156-8686
  • Mfr. Part No. DD125
Each
£22.51(exc. VAT)
Eaton 250A British Standard Fuse, B2, 415V, 133mm
  • RS Stock No. 181-8518
  • Mfr. Part No. EFS250
Each
£25.69(exc. VAT)
Europa EUC2P EUC MCB, 2P, 2A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6531
  • Mfr. Part No. EUC2P2C
Each
£12.79(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 20A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3307
  • Mfr. Part No. A9F54120
Each
£24.20(exc. VAT)
RS PRO 20A Solid Link for A1 Fuses
  • RS Stock No. 242-1049
Each (In a Pack of 5)
£2.764(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 16A Curve B, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3164
  • Mfr. Part No. A9F53116
Each
£24.45(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 40A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3408
  • Mfr. Part No. A9F54340
Each
£116.29(exc. VAT)
RS PRO 5A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6089
1 Pack of 10
£5.18(exc. VAT)
RS PRO Earthing Kit
  • RS Stock No. 528-983
Each
£19.61(exc. VAT)
ABB 8 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1899
  • Mfr. Part No. 1SL1201A00 65P08X12
Each
£25.95(exc. VAT)
ETA Thermal Circuit Breaker - 3120-N 2 Pole 50 V DC, 240 V AC Voltage Rating, 16A Current Rating
  • RS Stock No. 210-2068
  • Mfr. Part No. 3120-N521-H7T1-W01D-16A
Each
£27.59(exc. VAT)
Eaton PXF-A RCCB, 25A, 1+N Pole, 30mA, Type A, 440V ac
  • RS Stock No. 490-157
  • Mfr. Part No. 236744 PXF-25/2/003-A
Each
£38.05(exc. VAT)
RS PRO MCB, 2P, 16A Curve C, 240 → 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 265-0173
Each
£16.70(exc. VAT)
Bulgin 16A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 1P, 250V ac
  • RS Stock No. 512-6006
  • Mfr. Part No. FX0419
Each
£14.43(exc. VAT)
Eaton 6A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8374
  • Mfr. Part No. C10G6
1 Pack of 10
£11.01(exc. VAT)
RS PRO 10A Inline Fuse Holder for 5x20mm Fuse, 250V
  • RS Stock No. 237-5259
Each
£2.20(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 25A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3394
  • Mfr. Part No. A9F54325
Each
£108.27(exc. VAT)
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