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

184 of 999+
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 630A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 246-857
  • Mfr. Part No. 191613 NZMN3-4-AX630-BT
Each
PHP284,153.05(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 630A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 242-927
  • Mfr. Part No. 192312 NZMH3-4-PX630/VAR-AVE
Each
PHP477,473.89(exc. VAT)
Temporarily out of stock
Better World
ABB, XT2H MCCB 4P 10A, Fixed Mount
  • RS Stock No. 236-7552
  • Mfr. Part No. 1SDA067902R1 XT2H 160 Ekip LSI 10A FF
Each
PHP108,443.17(exc. VAT)
Temporarily out of stock
Better World
ABB, XT2V MCCB 3P 25A, Fixed Mount
  • RS Stock No. 236-6516
  • Mfr. Part No. 1SDA067977R1 XT2V 160 Ekip I 25A FF
Each
PHP77,288.36(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 200A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 231-187
  • Mfr. Part No. 107595 NZMN2-VEF200-BT-NA
Each
PHP139,144.09(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 32A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9883
  • Mfr. Part No. 3VA1132-3GE46-0AA0
Each
PHP29,228.26(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 4A Curve B, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 243-242
  • Mfr. Part No. 176065 FAZ-B4/1-DC
Each
PHP7,917.58(exc. VAT)
Temporarily out of stock
ABB SU 200 M Circuit Breaker, 2P, 25A Curve K, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 287-6396
  • Mfr. Part No. 2CDS272337R0517
Each
PHP8,280.17(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 32A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 230-386
  • Mfr. Part No. 113353 NZMH2-A32-SVE
Each
PHP43,986.54(exc. VAT)
Temporarily out of stock
Eaton RCBO, 16A Current Rating, 3P Poles, 30mA Trip Sensitivity, Type A, Type D, FRBmM Range
  • RS Stock No. 123-637
  • Mfr. Part No. 170777 FRBMM-D16/3/003-A
Each
PHP13,180.33(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 45A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-401
  • Mfr. Part No. 3VA5145-4EC31-1AA0
Each
PHP35,545.33(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 40A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-388
  • Mfr. Part No. 3VA5140-6ED11-0AA0
Each
PHP14,176.82(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 50A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-412
  • Mfr. Part No. 3VA5150-4ED21-1AA0
Each
PHP32,537.83(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 110A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 147-248
  • Mfr. Part No. 3VA5211-7EC31-1AA0
Each
PHP101,258.78(exc. VAT)
Temporarily out of stock
Eaton PC Board Non Resettable Fuse, Radial 2.5A, 300V ac
  • RS Stock No. 169-9523
  • Mfr. Part No. SR-5H-2-5A-BK
Each (In a Bag of 200)
PHP59.287(exc. VAT)
In Stock
Schneider Electric C120 A9N Circuit Breaker, 2P, 80A, Type AC, 415V AC, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 288-7116
  • Mfr. Part No. A9N18383
Each
PHP27,541.46(exc. VAT)
In Stock
Eaton 40A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 182-1398
  • Mfr. Part No. 170M1563D
Each (In a Box of 10)
PHP4,628.278(exc. VAT)
In Stock
Siemens SIRIUS Cover for use with 3RB2, 3RT1, 3RW407, 3RW444
  • RS Stock No. 218-2896
  • Mfr. Part No. 3RT1966-4EA2
Each
PHP1,823.54(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4080
  • Mfr. Part No. 3VA2116-6JQ42-0AA0
Each
PHP169,454.25(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 220A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 243-026
  • Mfr. Part No. 191580 NZMN3-MX220-AVE
Each
PHP199,625.58(exc. VAT)
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