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

182 of 999+
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4095
  • Mfr. Part No. 3VA2116-7HM46-0AA0
Each
PHP145,761.78(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4073
  • Mfr. Part No. 3VA2116-6HM42-0AA0
Each
PHP134,451.54(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4616
  • Mfr. Part No. 3VA2140-0MQ36-0AA0
Each
PHP113,835.21(exc. VAT)
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 3 kA, Fixed Mount
  • RS Stock No. 248-662
  • Mfr. Part No. 100779 NZMH2-VE250-S1
Each
PHP199,039.09(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 231-356
  • Mfr. Part No. 113574 NZMH3-VE400-T-AVE
Each
PHP285,032.78(exc. VAT)
ABB MCCB Molded Case Circuit Breaker 4P 400A, Fixed Mount
  • RS Stock No. 250-4128
  • Mfr. Part No. 1SDA054393R1
Each
PHP325,720.40(exc. VAT)
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 9 kA, Plug In
  • RS Stock No. 247-383
  • Mfr. Part No. 168887 NZMH3-4-VE400-SVE
Each
PHP293,536.84(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 232-050
  • Mfr. Part No. 110853 NZMH3-VE400-AVE
Each
PHP260,400.32(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 246-850
  • Mfr. Part No. 191593 NZMN3-VX250-SVE
Each
PHP182,910.70(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 35A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-365
  • Mfr. Part No. 3VA5135-5EC31-1AA0
Each
PHP27,827.72(exc. VAT)
ABB, Tmax MCCB 3P 320A, Fixed Mount
  • RS Stock No. 237-5963
  • Mfr. Part No. 1SDA054332R1 T5S400 FF PR221-LS 320A
Each
PHP106,379.10(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 200A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 230-369
  • Mfr. Part No. 113245 NZMN2-A200-SVE
Each
PHP96,843.70(exc. VAT)
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 200A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 230-946
  • Mfr. Part No. 107795 NZMN2-A200-BT-NA
Each
PHP119,863.32(exc. VAT)
Siemens SENTRON Connection Unit
  • RS Stock No. 277-0710
  • Mfr. Part No. 3WA9111-0AB03
Each
PHP7,481.98(exc. VAT)
Eaton xEffect - FRCmM RCCB, 63A, 2 Pole, 100mA, 240V ac
  • RS Stock No. 123-607
  • Mfr. Part No. 170439 FRCMM-63/2/01-S/A
Each
PHP32,384.79(exc. VAT)
Eaton 200A Bolted Tag Fuse, 500V ac/dc, 73.41mm
  • RS Stock No. 849-5535
  • Mfr. Part No. FWH-200B
Each
PHP9,098.26(exc. VAT)
ABB System Pro M Compact S200M MCB, 1+N, 63A Curve B, 230V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-587
  • Mfr. Part No. 2CDS271103R0635
Each
PHP15,755.35(exc. VAT)
Littelfuse SMD Non Resettable Fuse 6.3A, 125V
  • RS Stock No. 738-2927
  • Mfr. Part No. 045106.3MRL
Each (In a Pack of 10)
PHP53.88(exc. VAT)
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 231-164
  • Mfr. Part No. 113539 NZMN3-4-AE400/250-T-AVE
Each
PHP302,480.77(exc. VAT)
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 25 kA, Plug In
  • RS Stock No. 230-859
  • Mfr. Part No. 113025 NZMB2-A100-KCU-NA
Each
PHP45,965.93(exc. VAT)
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