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Shop the best prices on 1,788 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 specialty electrical switches & relays, battery charge controllers, circuit breaker panels and more online safely with Fruugo, with secure payment and fast shipping to Singapore.

Specialty Electrical Switches & RelaysBattery Charge ControllersCircuit Breaker PanelsRemote Control Boats & WatercraftMotor Vehicle Engine Parts
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1 - 32 of 1,788
high quality30a 40a 50a 60a 70a 80a 100a 120a 150a 200a 250a 300a Amp Car Circuit Breaker Portable Waterproof 12-48v
$13.95 Save $13.00 RRP: $26.95
BSB1-30 400V 40A 50A CIRCUIT BREAKER THREE PHASE GENERATOR PARTS
$94.00
Practical Industrial HVAC Contactors 24VAC Coils 25A/40.0A Resistive Load for High Performances Circuit Switching Multicolor
$40.95
Tuya WiFi Smart Circuit Breaker with Timer and Remote Control App
$169.00 Save $60.00 RRP: $229.00
Dc Circuit Breaker 1000v 2 Pole Double Mcb Solar Pv 63 Amp
$36.95 Save $9.00 RRP: $45.95
Sun Power Controllers LCD Backlight Display Small Charging Algorithm Simple Operate for Extreme Temperature Environment Multicolor
$47.95
Wdyk 10a - 80a 1p Tuya Zigbee Smart Circuit Breaker Remote Control Automatic Intelligent Interruptor
$129.00 Save $60.00 RRP: $189.00
1P/2P/3P/4P Tuya Zigbee Smart Circuit Breaker 16A-125A Automatic Switch Overload Short Circuit Works 25-26s
$129.00 Save $120.00 RRP: $249.00
Thermal Overload Protector Switch, 15A Manual Reset, 3A-50A Mini Circuit Breaker with Straight Pin & Screw Pin Design
$129.00 Save $70.00 RRP: $199.00
Dc Circuit Breaker 1000v 2 Pole Double Mcb Solar Pv 63 Amp-lian
$13.95 Save $18.00 RRP: $31.95
Boats/Car Circuit Breaker with Manual Resets Switches Waterproof Inline Fuses Inverters High Current Circuit Breaker
$32.95
Electric Water Heater Safety Switches Over Temperature Protection Water Heater Thermostat Home Safety Accessories Set
$25.95
ESC Brushless 12A 20A 30A 40A 60A 80A 100A Bidirectional Power Output Remote Vehicle ESC Electronic Speed Controller
$31.95
6KA 2P Electromechanical RCCB RCD Safety Switch, 16A-63A, 10mA-100mA, 230V Residual Current Circuit Breaker
$38.95 Save $50.05 RRP: $89.00
Residual Current Circuit Breaker with Leakage Protection, DZ47LE NXBLE Series
$84.00 Save $105.00 RRP: $189.00
HOBBYWING SkyWalker 40A V2 ESC Controller for RC Helicopters
$28.95
Bolt-down Automotive Fuse BF1 Series Auto Fuse 30A 40A 50A 60A 80A 100A 125A 150A 175A 200A Flat Type Fuse Rated 32V LITTELFUSE
$79.00
Important Safety Accessory for Electric Water Heaters Precise Temperature Control Heating Appliance Safety for Heater Multicolor
$26.95
Intelligent Relays Reset Protectors Adjustable Relays Over Voltages Current & Under Voltages Protective Device Multicolor
$36.95
Digital Voltages Protections Device Automatic Voltages Regulator for Electrical Equipment in Homes Offices & Factories Multicolor
$37.95
Multipurpose 1 Poles 24VAC Contactors 25A/40.0A Rating Convenient for Air Conditioners And Electrical Panel Use Multicolor
$42.95
Miniature Residual Current Circuit Breaker 1 Pole 400v Household Electric Leakage Protector Din Rail Installation Dz47-63
$20.95 Save $8.00 RRP: $28.95
Kuoyuh 98 Series 15a Straight Pin Screw Pin Mini Circuit Breaker 3a - 50a Manual Reset Thermal Overload Protector Switch
$43.95 Save $55.05 RRP: $99.00
20-150amp Circuit Breaker Dual Battery Ip67 12v-24v Fuse Manual Reset Waterproof
$14.95 Save $7.00 RRP: $21.95
DC36V 48V to 24V Converter Voltage Reducer 30A/40A/55A/65A Waterproof Step Down Converter Transformering for Trucks
$119.00
Sturdy 1 Poles Conditioner Contactors 25A/40.0A 24V Coils Flame Retardant Housing for Compressor Motor Control Multicolor
$39.95
20-150amp Circuit Breaker Dual Battery Ip67 12v-24v Fuse Manual Reset Waterproof
$13.95 Save $11.00 RRP: $24.95
2 PCS Audio Circuit Breaker,Zinc Alloy Boat Breaker Switch With Manual Reset for Marine Boat Automotive Industry Electrical Appliances
$45.95 Save $93.05 RRP: $139.00
Car Audio Inline Circuit Breaker Fus
$37.95
24V-380V SSR-40DA 40A 3-32V DC-AC Solid State Relay Module New
$23.95
Solar Charge Controllers 12V/24V with Intelligent Charging Protective and Double USB Port for Camping and Remote Area
$28.95
Boats/Car Circuit Breaker with Manual Resets Switches Waterproof Inline Fuses Inverters High Current Circuit Breaker
$33.95