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

174 of 999+
Temporarily out of stock
RS PRO SMD Non-Resettable Surface Mount Fuse 1A, 63V
  • RS Stock No. 252-2166
Each (On a Tape of 4000)
PHP9.826(exc. VAT)
In Stock
Siemens ALPHA Distribution Board, 12 Way
  • RS Stock No. 211-6076
  • Mfr. Part No. 8GB1371-2
Each
PHP7,593.02(exc. VAT)
Temporarily out of stock
Hager HMB MCB, 3P, 125A, 400V AC, 15 Breaking Capacity
  • RS Stock No. 602-107
  • Mfr. Part No. HMB399
Each
PHP77,714.43(exc. VAT)
Temporarily out of stock
ABB F200 RCCB, 40A, 2 Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 537-7361
  • Mfr. Part No. 2CSF202001R1400 F202 AC-40/0,03
Each
PHP12,266.84(exc. VAT)
In Stock
ABB Tmax T Shunt Opening Release for use with MCCB
  • RS Stock No. 232-0109
  • Mfr. Part No. 1SDA054873R1 SOR-C 230VAC/DC T4-6
Each
PHP10,273.83(exc. VAT)
Last RS stock
Littelfuse 15A Blue Blade Car Fuse, 32V ac/dc
  • RS Stock No. 878-3286
  • Mfr. Part No. 0MIN015.V
Each (In a Pack of 50)
PHP52.21(exc. VAT)
Temporarily out of stock
WEG EC-SD Busbar for use with CWB40, CWB50, CWB66, CWB80
  • RS Stock No. 201-3475
  • Mfr. Part No. EC-SD2
Each
PHP3,184.77(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100/160/250 Circuit Breakers
  • RS Stock No. 260-9332
  • Mfr. Part No. C1032G040
Each
PHP39,601.32(exc. VAT)
In Stock
ABB PS3 3 Phase Busbar, 690V ac/dc
  • RS Stock No. 231-9640
  • Mfr. Part No. 2CDL230001R1012 PS3/12
1 Box of 1
PHP1,046.43(exc. VAT)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, 80kA, 2000V (Volts), DIN Rail Mount
  • RS Stock No. 131-669
  • Mfr. Part No. 2910380
Each
PHP42,505.90(exc. VAT)
In Stock
Schneider Electric, ComPacT NSX MCCB 3P 160A, Fixed Mount
  • RS Stock No. 254-6342
  • Mfr. Part No. C16F3
Each
PHP30,947.88(exc. VAT)
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC Single Pole 65V dc Voltage Rating DIN Rail, 300mA Current Rating
  • RS Stock No. 135-481
  • Mfr. Part No. 0914565
1 Pack of 6
PHP29,387.67(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - AP12 2 Pole Panel Mount, 1A Current Rating
  • RS Stock No. 275-0165
  • Mfr. Part No. AP12-1-42-102
1 Box of 5
PHP240,674.94(exc. VAT)
In Stock
Littelfuse 40A Orange Blade Car Fuse, 32V dc
  • RS Stock No. 894-9580
  • Mfr. Part No. 0299040.ZXNV
Each (In a Pack of 5)
PHP109.44(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 5A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 243-540
  • Mfr. Part No. 102143 FAZ-D5/1-RT
Each
PHP5,732.91(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1.6kA , DIN Rail
  • RS Stock No. 127-484
  • Mfr. Part No. 183345 IZMX16B3-V16W-1
Each
PHP657,564.91(exc. VAT)
In Stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-309
  • Mfr. Part No. KV PC 6109
Each
PHP3,879.74(exc. VAT)
In Stock
Omron Busbar
  • RS Stock No. 111-3543
  • Mfr. Part No. PYDN-15.5-080R
Each
PHP259.38(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-267
  • Mfr. Part No. 3VA5112-6EC31-1AA0
Each
PHP86,869.52(exc. VAT)
In Stock
ABB FH200 RCCB, 63A, 2 Pole, 30mA, Type AC
  • RS Stock No. 540-1638
  • Mfr. Part No. 2CSF202006R1630 FH202 AC-63/0,03
Each
PHP5,208.97(exc. VAT)
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