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

178 of 999+
Hager CDC RCCB, 40A, 2 Pole, 30mA, Type AC, 127 → 230V ac
  • RS Stock No. 597-962
  • Mfr. Part No. CDC247F
Each
PHP14,167.04(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 630A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 341-265
  • Mfr. Part No. C063N35AFM
Each
PHP652,062.33(exc. VAT)
HENSEL 1, 3 Phase Distribution Board, 9 Way, 63 A
  • RS Stock No. 183-2856
  • Mfr. Part No. KV7109
Each
PHP4,442.30(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 63A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9405
  • Mfr. Part No. 3VA1163-6GE46-0AA0
Each
PHP27,952.83(exc. VAT)
Schneider Electric RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Resi9 Range
  • RS Stock No. 212-136
  • Mfr. Part No. R9D01632
Each
PHP11,457.82(exc. VAT)
Siemens 2A DII Diazed Fuse, E27 Thread Size, gG, 500V ac
  • RS Stock No. 396-152
  • Mfr. Part No. 5SB211
Each (In a Pack of 5)
PHP99.932(exc. VAT)
Wickmann PC Board Non Resettable Fuse, Radial 2A, 250V ac
  • RS Stock No. 377-2168P
  • Mfr. Part No. 3821200041
Each (Supplied in a Bag)
PHP86.85(exc. VAT)
Better World
Siemens, SENTRON MCCB 1P 125A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9724
  • Mfr. Part No. 3VA1112-5ED12-0AA0
Each
PHP24,384.69(exc. VAT)
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC 2 Pole 65V dc Voltage Rating DIN Rail, 4A Current Rating
  • RS Stock No. 135-906
  • Mfr. Part No. 0915027
1 Pack of 3
PHP30,804.81(exc. VAT)
Siemens SENTRON 5SY4 MCB, 2P, 8A, Type A, 230V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 610-581
  • Mfr. Part No. 5SY4508-5
Each
PHP6,442.21(exc. VAT)
Better World
Siemens, 0AA0 MCCB 4P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-5973
  • Mfr. Part No. 3VA1110-5ED42-0AA0
Each
PHP41,468.68(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 271-9391
  • Mfr. Part No. 3VA1163-4GE46-0AA0
Each
PHP31,388.18(exc. VAT)
Siemens, SENTRON MCCB 3P 800A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 272-0195
  • Mfr. Part No. 3VA1580-7MH32-0AA0
Each
PHP221,438.52(exc. VAT)
Schurter Surface Mount Fuse 630mA, 250V ac
  • RS Stock No. 270-7938
  • Mfr. Part No. 3403.0164.11
Each
PHP50.99(exc. VAT)
Siemens, SENTRON MCCB 4P 800A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 272-0184
  • Mfr. Part No. 3VA1580-5EF42-0AA0
Each
PHP234,777.01(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-481
  • Mfr. Part No. 3VA6580-5HL42-0AA0
Each
PHP426,669.44(exc. VAT)
RS PRO 10A Slotted Tag Fuse, A1, 250 V dc, 415V ac, 44.5mm
  • RS Stock No. 221-3692
1 Bag of 5
PHP1,428.69(exc. VAT)
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 237-6285
  • Mfr. Part No. 1SDA067226R1
Each
PHP16,455.12(exc. VAT)
Schneider Electric Cross Elbow Busbar Trunking, 250 → 750mm, 400A, Canalis Series
  • RS Stock No. 335-114
  • Mfr. Part No. KSA400DZE41A
Each
PHP120,921.20(exc. VAT)
Circuit Breaker - Potter & Brumfield 2 Pole 277V ac Voltage Rating Panel Mount, 20A Current Rating
  • RS Stock No. 505-876
  • Mfr. Part No. 5-1393254-9
1 Tray of 3
PHP19,990.74(exc. VAT)
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