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

109 of 999+
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-7931
  • Mfr. Part No. C25N3
Each
PHP57,897.02(exc. VAT)
Schneider Electric, PowerPact MCCB 2P 50A, Breaking Capacity 35 kA, Clip-On
  • RS Stock No. 341-125
  • Mfr. Part No. BGF26050
Each
PHP50,228.96(exc. VAT)
Better World
Schneider Electric TeSys GV5P MCB, 3P, 150A, 690V AC, 36 kA Breaking Capacity
  • RS Stock No. 188-4748
  • Mfr. Part No. GV5P150F
Each
PHP59,379.68(exc. VAT)
Mersen 100A NH Fuse, NH000, 690V ac
  • RS Stock No. 377-0156
  • Mfr. Part No. T322063
Each
PHP3,254.41(exc. VAT)
ABB System Pro M Compact S200 M UC MCB, 3P, 30A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 202-952
  • Mfr. Part No. 2CDS273061R0527
Each
PHP39,393.01(exc. VAT)
Mersen 35A DIII Diazed Fuse, E33 Thread Size, gG, 500V
  • RS Stock No. 377-0500
  • Mfr. Part No. C214063
Each (In a Pack of 5)
PHP233.252(exc. VAT)
Eaton RCBO, 25A Current Rating, 2P Poles, Type A, Type D, FRBDM Range
  • RS Stock No. 120-939
  • Mfr. Part No. 168212 FRBDM-D25/2/003-G/A
Each
PHP14,686.55(exc. VAT)
Schneider Electric A9C Acti9 Reflex MCB, 3P, 63A Curve C, 230V AC, 24V DC, 240 V ac Breaking Capacity
  • RS Stock No. 334-995
  • Mfr. Part No. A9C62363
Each
PHP40,147.98(exc. VAT)
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7319
  • Mfr. Part No. 1SDA067498R1 Ekip LS/I In=40A XT4 3p
Each
PHP42,174.11(exc. VAT)
Eaton PFIM RCCB, 63A, 4 Pole, 300mA, Type F, Type G, 230/400V ac
  • RS Stock No. 242-934
  • Mfr. Part No. 187361 PFIM-63/4/03-G/F
Each
PHP21,260.16(exc. VAT)
Siemens 5SV43 RCCB, 40A, 4 Pole, 30mA, Type AC, 400V
  • RS Stock No. 328-331
  • Mfr. Part No. 5SV4344-0MB
Each
PHP8,870.62(exc. VAT)
ABB System Pro M Compact S200M MCB, 4P, 2A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-246
  • Mfr. Part No. 2CDS274001R0277
Each
PHP42,536.33(exc. VAT)
Schurter OGN Series Thermoplastic PCB Mount Fuse Holder Cover for 5 x 20mm Fuse, IP00
  • RS Stock No. 173-9731
  • Mfr. Part No. 0853.0551
Each (In a Bag of 100)
PHP27.329(exc. VAT)
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX100/160 Circuit Breakers
  • RS Stock No. 260-9359
  • Mfr. Part No. C103TM040
Each
PHP12,626.80(exc. VAT)
Siemens 200A Centred Tag Fuse, NH1XL, 1.5kV
  • RS Stock No. 230-2993
  • Mfr. Part No. 3NE1225-5E
Each (In a Pack of 2)
PHP24,516.135(exc. VAT)
Schneider Electric, PowerPact Circuit breaker 3P 35A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-133
  • Mfr. Part No. BGL36035LU
Each
PHP73,052.85(exc. VAT)
Siemens ALPHA Assembly Kit for use with 3VA2 Molded Case Circuit Breakers
  • RS Stock No. 629-335
  • Mfr. Part No. 8GK6724-4KK23
Each
PHP15,188.36(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 70A, Breaking Capacity 150 kA
  • RS Stock No. 625-446
  • Mfr. Part No. 3VA5170-1MH31-0AA0
Each
PHP37,714.08(exc. VAT)
Eaton Moeller 278554 MCB, 1P, 5A Curve C
  • RS Stock No. 282-7131
  • Mfr. Part No. 278554 FAZ-C5/1
Each
PHP3,771.89(exc. VAT)
Schneider Electric, ComPacT Circuit Breaker Accessory 3, 4, Fixed Mount
  • RS Stock No. 655-163
  • Mfr. Part No. 33504
Each
PHP93,331.87(exc. VAT)
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