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

144 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 268-661
  • Mfr. Part No. 3VA6110-7HN31-0AA0
Each
PHP86,506.86(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 50A, Fixed Mount
  • RS Stock No. 260-7575
  • Mfr. Part No. C11E4TM050B
Each
PHP32,891.43(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9333
  • Mfr. Part No. 3VA1140-5GD46-0AA0
Each
PHP33,312.11(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 3P, 1.6A, Type A, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-302
  • Mfr. Part No. 5SY4315-5
Each
PHP13,647.51(exc. VAT)
Temporarily out of stock
Siemens 230V (Volts) Undervoltage Release Circuit Trip for use with Motor Circuit Breaker
  • RS Stock No. 231-3561
  • Mfr. Part No. 3RV2922-1CP0
Each
PHP5,498.38(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 630A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4831
  • Mfr. Part No. 3VA2563-7KQ42-0AA0
Each
PHP421,119.75(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Resi9 Range
  • RS Stock No. 212-084
  • Mfr. Part No. R9D41616
Each
PHP20,472.43(exc. VAT)
Temporarily out of stock
Phoenix Contact Surge Protector, 250V ac, DIN Rail Mount
  • RS Stock No. 801-6340
  • Mfr. Part No. 2950064
Each
PHP1,793.45(exc. VAT)
In Stock
Better World
Siemens 5SV3 RCCB, 40A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 202-7060
  • Mfr. Part No. 5SV3314-6KL
Each
PHP10,208.65(exc. VAT)
Temporarily out of stock
Siemens 80A Tag Fuse, NH2, 690 / 440V ac/dc
  • RS Stock No. 144-081
  • Mfr. Part No. 3NA6224-6
1 Pack of 3
PHP11,240.40(exc. VAT)
Temporarily out of stock
Eaton Surge Protector, 40kA, 2.7kV, DIN Rail Mount
  • RS Stock No. 126-015
  • Mfr. Part No. 176087 SPPVT2-06-2+PE-AX
Each
PHP26,282.99(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 5A, 125V ac
  • RS Stock No. 895-1694P
  • Mfr. Part No. 39615000000
Each (Supplied as a Tape)
PHP64.35(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 800A, Breaking Capacity 85 kA
  • RS Stock No. 209-7085
  • Mfr. Part No. 3VA2580-6HL42-0AA0
Each
PHP276,865.65(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Masterpact Chassis for use with Masterpact MTZ1 06-10 H1, Masterpact MTZ1 06-10 H2, Masterpact MTZ1
  • RS Stock No. 248-4151
  • Mfr. Part No. LV833722
Each
PHP303,077.59(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 1P, 1A Curve K, 230/400V AC, 72V DC, 15 kA Breaking Capacity
  • RS Stock No. 202-864
  • Mfr. Part No. 2CDS271001R0217
Each
PHP8,509.96(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 500mA Curve C, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3470
  • Mfr. Part No. A9F74270
Each
PHP10,482.89(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 32A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9877
  • Mfr. Part No. 3VA1132-3ED22-0AA0
Each
PHP17,925.06(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 2P, 300mA Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-351
  • Mfr. Part No. 2CDS272061R0117
Each
PHP23,528.98(exc. VAT)
In Stock
Littelfuse 0.5A Resettable Fuse, 24V dc
  • RS Stock No. 517-7111P
  • Mfr. Part No. MINISMDC050F-2
Each (Supplied on a Reel)
PHP19.80(exc. VAT)
In Stock
Better World
Siemens Sentron for use with 3VA Series Circuit Breaker
  • RS Stock No. 874-4540
  • Mfr. Part No. 3VA9988-0BL33
Each
PHP10,633.61(exc. VAT)
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