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Shop the best prices on 2,741 great value 40a products. Shopping for 40a is easy with Fruugo, with SALE discounts, offers and savings on Bolongking, Dangtu Huimang Jiancai Shangmao Youxian Gongsi, Jelivey and more. Buy action & toy figures, notebooks & notepads, motor vehicle engine parts and more online safely with Fruugo, with secure payment and fast shipping to United Kingdom.

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high quality30a 40a 50a 60a 70a 80a 100a 120a 150a 200a 250a 300a Amp Car Circuit Breaker Portable Waterproof 12-48v
£7.95 Save £7.00 RRP: £14.95
Practical Industrial HVAC Contactors 24VAC Coils 25A/40.0A Resistive Load for High Performances Circuit Switching Multicolor
£23.95
House 230VAC 40A 63A 80A Adjustable Protection Over and Under Value Automatic High and Low Voltage Protect Relay
£30.95 Save £12.00 RRP: £42.95
Tuya WiFi Smart Circuit Breaker with Timer and Remote Control App
£94.00 Save £45.00 RRP: £139.00
CHNT CHINT NXB-63 4P AC 230/400V Miniature Circuit Breaker C 6 10 16 20 25 32 40 63A Overload Protector DZ47 C Style Air Switch
£54.00 Save £20.00 RRP: £74.00
KUOYUH 98 series 8A 250VAC Manual Reset Thermal Overload protector switch Mini Circuit Breaker
£22.95 Save £9.00 RRP: £31.95
2P 32A 10/30/100/300mA Type A RCCB RCD ELCB Electromagnetic Residual Current Circuit Breaker Differential Breaker Safety Switch
£36.95 Save £17.05 RRP: £54.00
Dc Circuit Breaker 1000v 2 Pole Double Mcb Solar Pv 63 Amp
£23.95 Save £6.00 RRP: £29.95
Sun Power Controllers LCD Backlight Display Small Charging Algorithm Simple Operate for Extreme Temperature Environment Multicolor
£27.95
Dual Display 40A 63A 230V Din Rail Adjustable digital Over Under Voltage Relay Surge Protector Limit Over Current Protection
£32.95 Save £12.00 RRP: £44.95
Kuoyuh 98 Series 8a 250vac Manual Reset Thermal Overload Protector Switch Mini Circuit Breaker
£35.95 Save £58.05 RRP: £94.00
Boats/Car Circuit Breaker with Manual Resets Switches Waterproof Inline Fuses Inverters High Current Circuit Breaker
£18.95
Electric Water Heater Safety Switches Over Temperature Protection Water Heater Thermostat Home Safety Accessories Set
£14.95
ESC Brushless 12A 20A 30A 40A 60A 80A 100A Bidirectional Power Output Remote Vehicle ESC Electronic Speed Controller
£18.95
Kuoyuh 98 Series 8a 250vac Manual Reset Thermal Overload Protector Switch Mini Circuit Breaker
£46.95 Save £92.05 RRP: £139.00
HOBBYWING SkyWalker 40A V2 ESC Controller for RC Helicopters
£18.95
Bolt-down Automotive Fuse BF1 Series Auto Fuse 30A 40A 50A 60A 80A 100A 125A 150A 175A 200A Flat Type Fuse Rated 32V LITTELFUSE
£43.95
Important Safety Accessory for Electric Water Heaters Precise Temperature Control Heating Appliance Safety for Heater Multicolor
£15.95
Intelligent Relays Reset Protectors Adjustable Relays Over Voltages Current & Under Voltages Protective Device Multicolor
£21.95
2P DC 1000V Solar Mini Circuit Breaker 3A 6A 10A 16A 20A 25A 32A 40A 50A 63A DC
£20.95 Save £12.00 RRP: £32.95
Digital Voltages Protections Device Automatic Voltages Regulator for Electrical Equipment in Homes Offices & Factories Multicolor
£21.95
Multipurpose 1 Poles 24VAC Contactors 25A/40.0A Rating Convenient for Air Conditioners And Electrical Panel Use Multicolor
£24.95
Miniature Residual Current Circuit Breaker 1 Pole 400v Household Electric Leakage Protector Din Rail Installation Dz47-63
£11.95 Save £5.00 RRP: £16.95
Type A Curve B Rcbo 6Ka 18Mm 30Ma 1P+N Leakage Circuit Breaker With Over Current
£17.95 Save £11.00 RRP: £28.95
Ml1E-63 3P+N Air Switch With Leakage Protector Household Circuit Breaker Ac 400V
£21.95 Save £13.00 RRP: £34.95
Strong MPPT Solar Controllers 30amp to 100A with Small Defense Solar Powering Regulator for Streets Light Applications Multicolor
£32.95
Bright LCD Screen Solar Charge Controllers High Current Capacity Small Power Management Easy to Use for Off Living Multicolor
£27.95
Kuoyuh 98 Series 15a Straight Pin Screw Pin Mini Circuit Breaker 3a - 50a Manual Reset Thermal Overload Protector Switch
£25.95 Save £33.05 RRP: £59.00
20-150amp Circuit Breaker Dual Battery Ip67 12v-24v Fuse Manual Reset Waterproof
£8.95 Save £4.00 RRP: £12.95
DC36V 48V to 24V Converter Voltage Reducer 30A/40A/55A/65A Waterproof Step Down Converter Transformering for Trucks
£69.00
Sturdy 1 Poles Conditioner Contactors 25A/40.0A 24V Coils Flame Retardant Housing for Compressor Motor Control Multicolor
£22.95
TUYA With Metering WIFI Smart Circuit Breaker 1P 63A Rail DIN For Smart Home Wireless Remote Control Switch By Smart Life APP
£32.95 Save £66.05 RRP: £99.00