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

33502 Products showing for Fuses & Circuit Breakers

309 of 999+
Temporarily out of stock
Schneider Electric Flexible Busbar Trunking, 2m, 400A, Canalis Series
  • RS Stock No. 207-291
  • Mfr. Part No. KBA40DF420TW
Each
PHP26,711.90(exc. VAT)
Temporarily out of stock
Siemens 200A Tag Fuse, 135mm, 690V
  • RS Stock No. 608-348
  • Mfr. Part No. 3NE8225-0MK
1 Pack of 3
PHP20,055.55(exc. VAT)
In Stock
Lovato Shunt Trip Shunt trip for use with P2MB Series
  • RS Stock No. 825-6194
  • Mfr. Part No. P2X16230
Each
PHP7,699.06(exc. VAT)
Temporarily out of stock
Phoenix Contact Surge Protector, On Base Element Mount
  • RS Stock No. 201-4263
  • Mfr. Part No. 2907846
Each
PHP9,798.87(exc. VAT)
In Stock
Eaton Extension Terminal for use with 25 mm² Switch Board, 3P
  • RS Stock No. 178-8006
  • Mfr. Part No. 262518 BK25/3-PKZ0-E
Each
PHP1,064.04(exc. VAT)
Temporarily out of stock
35A NH Fuse, 51 x 21 x 79mm, 400V ac
  • RS Stock No. 263-443
  • Mfr. Part No. 35NHG000B-400
1 Pack of 3
PHP1,007.31(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 6.3A, Fixed Mount
  • RS Stock No. 260-9424
  • Mfr. Part No. C10F3MA007
Each
PHP40,265.70(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iIDK RCCB, 25A, 4 Pole, 300mA, Type AC, 380 → 415V ac
  • RS Stock No. 238-3461
  • Mfr. Part No. A9R56425
Each
PHP14,018.74(exc. VAT)
Temporarily out of stock
ABB F200 RCCB, 63A, 2 Pole, 300mA, Type A, 230/400V ac
  • RS Stock No. 177-5079
  • Mfr. Part No. 2CSF202201R3630 F202 A S-63/0,3
Each
PHP17,463.15(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 25A Curve B, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 247-888
  • Mfr. Part No. 132745 FAZ-B25/1-RT
Each
PHP2,683.18(exc. VAT)
In Stock
Littelfuse 2A Resettable Fuse, 8V dc
  • RS Stock No. 506-911
  • Mfr. Part No. MINISMDC200F
Each (In a Pack of 10)
PHP25.716(exc. VAT)
Temporarily out of stock
Hager Hager MMN Circuit Breaker, 4P, 50A, Type AC, 415V AC, 15 kA Breaking Capacity
  • RS Stock No. 599-894
  • Mfr. Part No. MMN450
Each
PHP54,366.26(exc. VAT)
Temporarily out of stock
BB-EV 2 Phase Busbar, 690V, 27mm Pitch
  • RS Stock No. 247-368
  • Mfr. Part No. 168841 BB-EVF-16/2P-1,5MU
Each
PHP4,098.08(exc. VAT)
Temporarily out of stock
Siemens 5SM28 RCCB, 40A, 4 Pole, Type A, 400V
  • RS Stock No. 328-426
  • Mfr. Part No. 5SM2842-8
Each
PHP17,667.93(exc. VAT)
Temporarily out of stock
Eaton Distribution Parts Rigid Wire Jumper for use with Distribution Parts
  • RS Stock No. 253-271
  • Mfr. Part No. 215610 RVS-1PHAS/125
1 Pack of 3
PHP424.23(exc. VAT)
Temporarily out of stock
Siemens SENTRON Undervoltage Release for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 265-510
  • Mfr. Part No. 3VW9011-0AE18
Each
PHP27,418.28(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 70A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-654
  • Mfr. Part No. 3VA5270-7ED31-1AA0
Each
PHP80,641.99(exc. VAT)
Temporarily out of stock
Hager NKN MCB, 4P, 25A Curve C, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 597-904
  • Mfr. Part No. NKN425
Each
PHP22,004.78(exc. VAT)
In Stock
Bourns 0.2A Resettable Fuse, 60V
  • RS Stock No. 647-8459
  • Mfr. Part No. MF-R020
Each (In a Pack of 10)
PHP24.344(exc. VAT)
Temporarily out of stock
ABB Flange for use with Tmax XT
  • RS Stock No. 236-6848
  • Mfr. Part No. 1SDA068652R1
Each
PHP2,689.55(exc. VAT)
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