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

33503 Products showing for Fuses & Circuit Breakers

308 of 999+
In Stock
Legrand DX3 RCD, 32A, 1+N Pole, 30mA, Type C
  • RS Stock No. 731-9869
  • Mfr. Part No. 4 107 08
Each
PHP24,339.43(exc. VAT)
Temporarily out of stock
Siemens ALPHA Busbar
  • RS Stock No. 629-054
  • Mfr. Part No. 8GK9735-2KK20
Each
PHP45,931.94(exc. VAT)
Unavailable
Omron Busbar
  • RS Stock No. 111-3069
  • Mfr. Part No. PYDN-6.2-020S
Each
PHP57.24(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-4523
  • Mfr. Part No. 3VA2125-5MP36-0AA0
Each
PHP75,547.39(exc. VAT)
In Stock
Bourns 3.3A Resettable Fuse, 24V
  • RS Stock No. 245-9164P
  • Mfr. Part No. MF-LSMF330/24X-2
Each (Supplied on a Reel)
PHP77.22(exc. VAT)
Temporarily out of stock
Omron Busbar
  • RS Stock No. 111-3536
  • Mfr. Part No. PYDN-7.75-030Y
Each
PHP113.67(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 2P, 32A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-895
  • Mfr. Part No. 2CCS862001R0537
Each
PHP15,875.24(exc. VAT)
In Stock
Siemens SIRIUS Rotary Operator for use with Circuit Breaker
  • RS Stock No. 271-0877
  • Mfr. Part No. 3RV2926-1K
Each
PHP8,192.09(exc. VAT)
Temporarily out of stock
ABB RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 237-3390
  • Mfr. Part No. 2CSR252001R1404
Each
PHP17,818.70(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 230-055
  • Mfr. Part No. 110891 NZMN3-VE250-T
Each
PHP196,693.14(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 70A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-536
  • Mfr. Part No. 3VA5270-6ED61-0AA0
Each
PHP64,366.97(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 3P, 1.6A Curve D, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 204-367
  • Mfr. Part No. 2CDS273001R0971
Each
PHP29,711.99(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 1P 160A, Breaking Capacity 25 KA, Fixed Mount
  • RS Stock No. 119-590
  • Mfr. Part No. C16N1TM160
Each
PHP35,729.21(exc. VAT)
Temporarily out of stock
Schneider Electric MCCB 3P, Fixed Mount
  • RS Stock No. 178-7897
  • Mfr. Part No. LV426960
Each
PHP3,173.52(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 1P, 3A, Type Z, 240V AC, 72V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-273
  • Mfr. Part No. 2CDS381001R0318
Each
PHP11,289.33(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 236-6579
  • Mfr. Part No. 1SDA068062R1 XT3N 250 TMD 100A FF
Each
PHP57,510.16(exc. VAT)
Temporarily out of stock
RS PRO SMD Non-Resettable Surface Mount Fuse 5A, 63V
  • RS Stock No. 252-2134
Each (On a Tape of 4000)
PHP10.445(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 4P 160A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 178-7963
  • Mfr. Part No. LV426758
Each
PHP85,574.09(exc. VAT)
Temporarily out of stock
TE Connectivity Circuit Breaker - W28 Single Pole 250 or 32V Voltage Rating Panel Mount, 12A Current Rating
  • RS Stock No. 473-753
  • Mfr. Part No. 2-1393250-7
1 Pack of 40
PHP13,803.00(exc. VAT)
In Stock
Better World
Schneider Electric ID RCCB, 40A, 2 Pole, 300mA, Type AC, 240V ac
  • RS Stock No. 214-2099
  • Mfr. Part No. M9R14240
Each
PHP13,884.06(exc. VAT)
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