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

50255 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
Mersen 3A FF Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 136-0566
  • Mfr. Part No. V1014571 / FR10GR69V3
Subtotal (1 unit)
SGD28.67(exc. GST)
SGD28.67/unit
In Stock
Mersen 5A F GMG Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 914-4351
  • Mfr. Part No. ATM5
Subtotal (1 unit)
SGD41.61(exc. GST)
SGD41.61/unit
In Stock
Phoenix Contact CLIPLINE UT 6-TMC Thermal Circuit Breaker - 1-Pole, DIN Rail, 1A Current Rating, 250V ac, 28 V dc
  • RS Stock No. 684-3585
  • Mfr. Part No. 0916604
Subtotal (1 unit)
SGD34.05(exc. GST)
SGD34.05/unit
In Stock
Eaton 4A AM Ceramic Cartridge Fuse, 14 x 51 mm
  • RS Stock No. 181-8822
  • Mfr. Part No. C14M4
Subtotal (1 unit)
SGD3.21(exc. GST)
SGD3.21/unit
In Stock
Schneider Electric Acti9 IC60N Miniature Circuit Breaker, 2-Pole, 2A, Type C, 100V, 12 V, 130 V, 220 V, 240 V, 380 V,
  • RS Stock No. 734-9131
  • Mfr. Part No. A9F74202
Subtotal (1 unit)
SGD102.84(exc. GST)
SGD102.84/unit
In Stock
Schneider Electric Acti9 Adapter for use with IlD MCB, iC60 MCB, IC60 Rotary Handle, IDPN Vigi, ISW-NA
  • RS Stock No. 791-3035
  • Mfr. Part No. A9A27008
Subtotal (1 unit)
SGD183.43(exc. GST)
SGD183.43/unit
Temporarily out of stock
ABB RCBO, 20A Current Rating, 2-Pole, 30 mA Trip Sensitivity, Type A, DS301C Range, 2CSR255163R Range
  • RS Stock No. 707-314
  • Mfr. Part No. 2CSR255163R1204
Subtotal (1 unit)
SGD211.16(exc. GST)
SGD211.16/unit
In Stock
Schurter 2A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 789-7781
  • Mfr. Part No. 0001.2507
Subtotal (1 bag of 10 units)
SGD9.32(exc. GST)
SGD0.932/unit
Temporarily out of stock
RS PRO 2A F Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-413
Subtotal (1 pack of 10 units)
SGD4.92(exc. GST)
SGD0.492/unit
In Stock
Littelfuse 6.3A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 542-1250
  • Mfr. Part No. 021806.3MXP
Subtotal (1 pack of 10 units)
SGD15.71(exc. GST)
SGD1.571/unit
In Stock
Eaton 10A T Melamine Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 851-1665
  • Mfr. Part No. FNQ-R-10
Subtotal (1 unit)
SGD90.42(exc. GST)
SGD90.42/unit
In Stock
RS PRO 3.15A FF Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 420-101
Subtotal (1 pack of 10 units)
SGD21.31(exc. GST)
SGD2.131/unit
In Stock
Littelfuse 800mA T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 541-3732
  • Mfr. Part No. 0218.800MXP
Subtotal (1 pack of 10 units)
SGD10.39(exc. GST)
SGD1.039/unit
In Stock
Eaton 2A F Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 848-3024
  • Mfr. Part No. BK-GMA-2-R
Subtotal (1 unit)
SGD0.85(exc. GST)
SGD0.85/unit
In Stock
Schurter 5A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 777-7505
  • Mfr. Part No. 0034.3124
Subtotal (1 pack of 10 units)
SGD6.54(exc. GST)
SGD0.654/unit
In Stock
Littelfuse 3A T Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 769-0082
  • Mfr. Part No. 0313003.HXP
Subtotal (1 pack of 10 units)
SGD15.12(exc. GST)
SGD1.512/unit
Temporarily out of stock
RS PRO RCBO, 20A Current Rating, 1-Pole, 30 mA Trip Sensitivity, Type B, RSKO Range, RCBO Range
  • RS Stock No. 756-193
Subtotal (1 unit)
SGD49.66(exc. GST)
SGD49.66/unit
In Stock
SIBA 500mA FF Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 736-1416
  • Mfr. Part No. 70-172-40/0.5A
Subtotal (1 unit)
SGD12.99(exc. GST)
SGD12.99/unit
In Stock
RS Better World
Siemens Surge Protector
  • RS Stock No. 203-2644
  • Mfr. Part No. 3RT2936-1BD00
Subtotal (1 unit)
SGD31.35(exc. GST)
SGD31.35/unit
In Stock
Schurter 10A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 789-7788
  • Mfr. Part No. 0001.2514
Subtotal (1 bag of 10 units)
SGD10.14(exc. GST)
SGD1.014/unit
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