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

288 of 999+
Temporarily out of stock
Weidmüller Surge Arrester, 20kA, 1000V dc, Screw Mount Mount
  • RS Stock No. 285-5297
  • Mfr. Part No. 2764140000
Each
PHP37,189.49(exc. VAT)
In Stock
Siemens 80A Centred Tag Fuse, NH00, 690V ac
  • RS Stock No. 396-376
  • Mfr. Part No. 3NE8020-1
Each (In a Pack of 3)
PHP5,330.997(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5174
  • Mfr. Part No. 3VA2163-6HL32-0AA0
Each
PHP49,993.75(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with XT2
  • RS Stock No. 236-6874
  • Mfr. Part No. 1SDA100110R1 Ekip LSI 100A XT2 3p
Each
PHP84,615.65(exc. VAT)
In Stock
ABB MISTRAL Blanking Plate
  • RS Stock No. 232-0310
  • Mfr. Part No. 1SL1948A00 MISTRAL
Each
PHP438.85(exc. VAT)
In Stock
Better World
Schneider Electric ID RCCB, 40A, 2 Pole, 30mA, Type AC, 240V ac
  • RS Stock No. 214-2096
  • Mfr. Part No. M9R11240
Each
PHP11,740.37(exc. VAT)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-069
  • Mfr. Part No. KV 9103
Each
PHP2,798.01(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 7A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 240-465
  • Mfr. Part No. 102105 FAZ-D7/1-NA
Each
PHP4,574.60(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 2P, 8A Curve C, 415V AC, 125V DC, 25 kA Breaking Capacity
  • RS Stock No. 200-905
  • Mfr. Part No. 2CDS382001R0084
Each
PHP16,344.25(exc. VAT)
Temporarily out of stock
ABB SU200 M MCB, 2P, 20A Curve K, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-043
  • Mfr. Part No. 2CDS272337R0487
Each
PHP19,109.29(exc. VAT)
Temporarily out of stock
ABB 250A Tag Fuse, 150 x 40 x 84mm, 500V
  • RS Stock No. 251-3484
  • Mfr. Part No. 1SCA022627R6350
Each
PHP4,476.30(exc. VAT)
In Stock
Bourns 3.75A Resettable Fuse, 72V
  • RS Stock No. 647-8730P
  • Mfr. Part No. MF-RX375/72-0
Each (Supplied in a Bag)
PHP37.859(exc. VAT)
Temporarily out of stock
Hager Hager NSN Circuit Breaker, 2P, 50A Curve D, 415V AC, 15 kA Breaking Capacity
  • RS Stock No. 599-719
  • Mfr. Part No. NSN250
Each
PHP18,212.68(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 225A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-805
  • Mfr. Part No. 3VA5222-6EC31-0AA0
Each
PHP147,717.75(exc. VAT)
Temporarily out of stock
ABB RCBO, 13A Current Rating, 3P Poles, Type B
  • RS Stock No. 237-5174
  • Mfr. Part No. 2CSR273101R1135
Each
PHP24,681.74(exc. VAT)
Temporarily out of stock
Socomec 3954 Lug Connector for use with SIRCO Load Break Switches
  • RS Stock No. 252-3537
  • Mfr. Part No. 39543020
Each
PHP3,373.13(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 32A Curve C, 230V AC, 60V DC, 7.5 kA Breaking Capacity
  • RS Stock No. 247-573
  • Mfr. Part No. 141909 FAZT-C32/1
Each
PHP4,508.62(exc. VAT)
In Stock
ABB Surge Protector, DIN Rail Mount
  • RS Stock No. 136-3845
  • Mfr. Part No. 1SNA167489R2200
Each
PHP107.47(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 1P, 40A, Type Z, 240V AC, 72V DC, 25 kA Breaking Capacity
  • RS Stock No. 204-455
  • Mfr. Part No. 2CDS381001R0558
Each
PHP11,289.33(exc. VAT)
In Stock
Legrand DX3 RCCB, 40A, 3+N Pole, 30mA, Type AC
  • RS Stock No. 732-0070
  • Mfr. Part No. 4 116 61
Each
PHP24,576.41(exc. VAT)
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