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

311 of 999+
Temporarily out of stock
Better World
Siemens 5SV3 RCCB, 63A, 4 Pole, 100mA, Type A, 400V ac
  • RS Stock No. 211-9669
  • Mfr. Part No. 5SV3446-8
Each
PHP24,324.01(exc. VAT)
In Stock
Mersen 32A Bolted Tag Fuse, A2, 460 V dc, 690V ac, 73mm
  • RS Stock No. 178-1103
  • Mfr. Part No. Y1019266 / BTIA69V32M50
Each (In a Pack of 10)
PHP800.119(exc. VAT)
In Stock
Bourns 40A Tag Fuse, 38mm, 170V dc, 24.1mm
  • RS Stock No. 254-4229
  • Mfr. Part No. PF-NT5-40
Each
PHP1,839.16(exc. VAT)
Temporarily out of stock
Eaton 100A Tag Fuse, 25mm, 1kV
  • RS Stock No. 282-6192
  • Mfr. Part No. FWE-100A
Each
PHP10,866.75(exc. VAT)
Temporarily out of stock
ABB 40A Tag Fuse, NH1, 500V
  • RS Stock No. 250-4434
  • Mfr. Part No. 1SCA022697R8200
1 Box of 3
PHP6,298.80(exc. VAT)
In Stock
Eaton 315A NH Fuse, NH03, 500V
  • RS Stock No. 703-8752
  • Mfr. Part No. 315NHG03B
Each
PHP1,412.45(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 50A, Breaking Capacity 55 kA
  • RS Stock No. 210-1666
  • Mfr. Part No. 3VA1150-5EE32-0AA0
Each
PHP33,733.10(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - M39019 Single Pole Panel Mount, 15A Current Rating
  • RS Stock No. 275-0414
  • Mfr. Part No. M39019/01-255S
1 Box of 3
PHP191,506.41(exc. VAT)
In Stock
Littelfuse 7.5A Resettable Fuse, 32V dc
  • RS Stock No. 712-7525
  • Mfr. Part No. AHEF750
Each (In a Pack of 10)
PHP70.80(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-592
  • Mfr. Part No. 3VA6560-7HN32-0AA0
Each
PHP314,503.76(exc. VAT)
Temporarily out of stock
ABB S800U MCB, 4P, 15A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-265
  • Mfr. Part No. 2CCS864017R0457
Each
PHP36,029.17(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7259
  • Mfr. Part No. 1SDA067336R1 Ekip I In=63A XT2 4p
Each
PHP37,070.56(exc. VAT)
Temporarily out of stock
Eaton 400A Bolted Tag Fuse, B4, 460 V dc, 660V ac, 111mm
  • RS Stock No. 182-1458
  • Mfr. Part No. TMF400M450
Each
PHP17,227.28(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 160A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9767
  • Mfr. Part No. 3VA1116-4ED22-0AA0
Each
PHP45,375.72(exc. VAT)
Temporarily out of stock
Better World
ABB, XT4H MCCB 3P 40A, Fixed Mount
  • RS Stock No. 236-6790
  • Mfr. Part No. 1SDA068526R1 XT4H 160 Ekip LSIG 40A FF
Each
PHP128,266.80(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9726
  • Mfr. Part No. 3VA1112-5ED42-0AA0
Each
PHP60,950.18(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 7.5 kA, Plug In
  • RS Stock No. 230-660
  • Mfr. Part No. 112769 NZMN1-S50-SVE
Each
PHP36,728.76(exc. VAT)
In Stock
Siemens 63A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 203-2039
  • Mfr. Part No. 3NA7822
Each (In a Pack of 3)
PHP419.30(exc. VAT)
In Stock
Bourns 0.5A Resettable Fuse, 60V
  • RS Stock No. 647-8027P
  • Mfr. Part No. MF-SM050-2
Each (Supplied on a Reel)
PHP24.552(exc. VAT)
In Stock
Legrand RCCB, 63A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 266-1363
  • Mfr. Part No. 411651
Each
PHP18,489.90(exc. VAT)
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