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

177 of 999+
Temporarily out of stock
ABB Earth & Neutral Terminal Bar for use with MCB
  • RS Stock No. 232-0024
  • Mfr. Part No. GJI2320072R0017 SZ-KLB 16
1 Box of 1
PHP1,131.34(exc. VAT)
Temporarily out of stock
HENSEL ENYSTAR Distribution Board, 75 A
  • RS Stock No. 117-267
  • Mfr. Part No. FP 1218
Each
PHP16,302.24(exc. VAT)
Temporarily out of stock
Siemens SENTRON Busbar
  • RS Stock No. 266-505
  • Mfr. Part No. 8US1313-4AM04
Each
PHP25,014.54(exc. VAT)
Temporarily out of stock
Siemens SENTRON Busbar Connector, 450V
  • RS Stock No. 211-3831
  • Mfr. Part No. 5ST3781-2
Each (In a Pack of 10)
PHP737.826(exc. VAT)
In Stock
Eaton Eaton Moeller 1 Phase Busbar, 1000V, 17.6mm Pitch
  • RS Stock No. 123-035
  • Mfr. Part No. 171131 Z-BB/UL25/1P1MU/57
Each
PHP1,316.16(exc. VAT)
Temporarily out of stock
Schneider Electric A9F Acti9 iC60 MCB, 1P, 32A Curve B, 500V AC, 60V DC, 230 V ac Breaking Capacity
  • RS Stock No. 335-058
  • Mfr. Part No. A9F93132
Each
PHP4,720.49(exc. VAT)
In Stock
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 3P, 32A Curve C, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 339-677
  • Mfr. Part No. SE10C332
Each
PHP8,858.39(exc. VAT)
Temporarily out of stock
Eaton BB-EV 3 Phase Busbar, 690V, 17.5mm Pitch
  • RS Stock No. 241-345
  • Mfr. Part No. 168871 BB-EVP-16/3P-1,5MU
Each
PHP5,593.62(exc. VAT)
Temporarily out of stock
Hager NEN MCB, 4P, 63A Curve B, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4705
  • Mfr. Part No. NEN463
Each
PHP37,074.45(exc. VAT)
Temporarily out of stock
Littelfuse SMD Non Resettable Fuse 4A, 125V ac
  • RS Stock No. 769-3735
  • Mfr. Part No. 0452004.NRL
Each (In a Pack of 10)
PHP104.148(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Busbar End Feed Unit, Canalis KS Series
  • RS Stock No. 211-0473
  • Mfr. Part No. KSA630ABD4
Each
PHP171,235.96(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IULN11 2 Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0313
  • Mfr. Part No. IULN11-1REC4-72-20.0-A
1 Box of 5
PHP63,096.84(exc. VAT)
Temporarily out of stock
Siemens SENTRON Two Phase Busbar, 1mm Pitch
  • RS Stock No. 627-142
  • Mfr. Part No. 5ST3772
1 Pack of 10
PHP6,698.29(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 200A, Breaking Capacity 15 kA, Fixed Mount
  • RS Stock No. 347-119
  • Mfr. Part No. C25N6TM160
Each
PHP208,705.87(exc. VAT)
Temporarily out of stock
ABB RCBO, 63A Current Rating, 3P Poles, Type B
  • RS Stock No. 237-5187
  • Mfr. Part No. 2CSR273101R1635
Each
PHP31,343.53(exc. VAT)
Temporarily out of stock
Eaton MCB, 4P, 2A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 248-676
  • Mfr. Part No. 101357 PLI-C2/4
Each
PHP14,295.63(exc. VAT)
Temporarily out of stock
250A Tag Fuse, 56 x 79mm, 1.5kV
  • RS Stock No. 263-112
  • Mfr. Part No. SD1-D-PV NH1 SINGLE POLE SILVER 1/4 SCREW PV
1 Pack of 3
PHP8,297.92(exc. VAT)
In Stock
Bourns SMD Non Resettable Fuse 3.5A, 125V ac
  • RS Stock No. 191-4198
  • Mfr. Part No. SF-2410HI350T-2
Each (On a Reel of 1000)
PHP40.953(exc. VAT)
Temporarily out of stock
Eaton Eaton Control Busbar, 600V ac, 60 And 185mm Pitch
  • RS Stock No. 243-786
  • Mfr. Part No. 107167 CU-BAR-720/T
Each
PHP40,741.46(exc. VAT)
In Stock
ABB Tmax XT Padlock Device for use with Tmax XT
  • RS Stock No. 237-6097
  • Mfr. Part No. 1SDA066590R1 PLL XT2-XT4
Each
PHP2,539.08(exc. VAT)
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