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
Fuses - PCB
Fuses - PCB

33476 Products showing for Fuses & Circuit Breakers

103 of 999+
In Stock
ABB HPMCB - High Performance MCB Padlock Lever Lock for use with S800B, S800C, S800HV, S800N, S800PV, S800S, S800U
  • RS Stock No. 232-0315
  • Mfr. Part No. 2CCS800900R0051 S800-PLL
Each
PHP2,745.54(exc. VAT)
In Stock
SIBA 500A White Automotive Car Fuse, 80V dc
  • RS Stock No. 161-1829
  • Mfr. Part No. 9005805.500
Each (In a Box of 20)
PHP516.383(exc. VAT)
Temporarily out of stock
Siemens 160A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 210-6890
  • Mfr. Part No. 3NA3236-6
Each (In a Pack of 3)
PHP4,572.147(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5204
  • Mfr. Part No. 3VA2325-6HN32-0AA0
Each
PHP116,090.34(exc. VAT)
In Stock
Better World
Siemens Surge Protector, 70 V dc, 127V ac, Clip-On Mount
  • RS Stock No. 122-9477
  • Mfr. Part No. 3RT2916-1JK00
Each
PHP1,421.89(exc. VAT)
Temporarily out of stock
Siemens SENTRON 3VA9 Rotary Operator for use with 3VA1 400/630, 3VA2 400/630
  • RS Stock No. 218-1857
  • Mfr. Part No. 3VA9467-0EK23
Each
PHP18,460.03(exc. VAT)
Temporarily out of stock
ABB RCBO, 40A Current Rating, 3P Poles, Type C
  • RS Stock No. 237-5182
  • Mfr. Part No. 2CSR273101R1404
Each
PHP26,468.50(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Withdrawable Unit for use with INX16…W, INX40…W, IZMX16…W, IZMX40…W
  • RS Stock No. 132-404
  • Mfr. Part No. 184197 IZMX-CRB-1
Each
PHP14,460.19(exc. VAT)
In Stock
RS PRO Industrial Surge Protector, 10kA, 220 V, DIN Rail Mount
  • RS Stock No. 101-763
Each
PHP6,209.39(exc. VAT)
Temporarily out of stock
Eaton PKPM2 RCCB, 10A, 2 Pole, 100mA, Type C, 230V
  • RS Stock No. 229-445
  • Mfr. Part No. 108117 PKPM2-10/2/C/01-A
Each
PHP15,615.22(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 1A, 125V ac/dc
  • RS Stock No. 219-6226
  • Mfr. Part No. 0154001.DRT
Each (In a Pack of 10)
PHP180.648(exc. VAT)
In Stock
SIBA 80A White Automotive Car Fuse, 80V dc
  • RS Stock No. 161-1830
  • Mfr. Part No. 9005805.80
Each
PHP373.65(exc. VAT)
In Stock
Better World
Siemens Surge Protector, Clip-On Mount
  • RS Stock No. 203-2629
  • Mfr. Part No. 3RT2926-1MR00
Each
PHP2,337.99(exc. VAT)
In Stock
nVent SCHROFF Earthing Kit
  • RS Stock No. 454-9795
  • Mfr. Part No. 21100490
Each
PHP519.85(exc. VAT)
Temporarily out of stock
Siemens 315A Centred Tag Fuse, NH2XL, 15kV
  • RS Stock No. 230-2997
  • Mfr. Part No. 3NE1330-5E
Each (In a Pack of 2)
PHP34,505.50(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 268-446
  • Mfr. Part No. 3VA6110-8JQ31-2AA0
Each
PHP195,740.10(exc. VAT)
Temporarily out of stock
Eaton 2A Bottle Fuse, 500V
  • RS Stock No. 258-963
  • Mfr. Part No. 2D27R FUSE-D2 2A F GR 500VAC E27
1 Pack of 5
PHP2,023.10(exc. VAT)
Temporarily out of stock
Limitor Thermal Fuse +70°C 2.5 A, 250V ac
  • RS Stock No. 204-7405
  • Mfr. Part No. Q82 A 70 05 100
Each
PHP361.29(exc. VAT)
Temporarily out of stock
Siemens SENTRON Terminal for use with 3VA6 150/250
  • RS Stock No. 269-7160
  • Mfr. Part No. 3VA9243-0JH12
Each (In a Pack of 3)
PHP1,345.10(exc. VAT)
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC 2 Pole 250V ac Voltage Rating DIN Rail, 5A Current Rating
  • RS Stock No. 135-908
  • Mfr. Part No. 0915030
1 Pack of 3
PHP29,818.36(exc. VAT)
1
103
1674
Results per page

Related links