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Shop the best prices on 1,824 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 Power & Electrical Systems
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97 - 128 of 1,824
12V 24V Solar Controller 30/40/50/60A Solar Panel Regulator Double USB Auto Solar Panel Charge Regulator Enduring
$48.95 Save $10.05 RRP: $59.00
1P+N RCBO 10A-40A 230V Residual Current Circuit Breaker for Chint Nxble-40 DPNL
$43.95
2025 30-300amp Waterproof Car Circuit Breaker Fuse Reset For Boat Auto Dc 12v-48v
$24.95 Save $25.00 RRP: $49.95
DIY 40/100A NY-D01 Control Board with HighPrecision Potentiometer Optocoupler Isolated 40/100A
$33.95
Mppt Solar Charge Controller 40a 70a 100a With Lcd Dual Usb Max 5v 2a Output 12v 24v Auto Solar Regulator Pv Max 50vdc
$35.95 Save $18.05 RRP: $54.00
Dc Circuit Breaker 1000v 2 Pole Double Mcb Solar Pv 63 Amp
$36.95 Save $15.00 RRP: $51.95
Disyuntor De 12v Y 24v Cc, 30a, 40a, 60a, 80a, 100a, Sistema Solar Domstico, Impermeable, Mini Disyuntor, Reinicio, Inversor De Fusible
$219.00
20A 30A 40A 50A Universal Automatic Auto Truck Fuse Manual Reset Circuit Breaker Stud Bolt Protect Screw Kits with Cover
$19.95 Save $3.00 RRP: $22.95
Multipurpose Solar Charge Controllers 12V/24V with Double USB Port for Enhances Energy Efficiency in Applications Multicolor
$30.95
SVP912 40A 120V AC Self Recovery Under Voltage Current Protector
$24.95 Save $10.00 RRP: $34.95
Electric Speed Controller Brushless Electronic Speed Controller for Remote Control Car Ship Underwater Propeller
$31.95
Dual Power Automatic Transfer Switch 2P Fast Switching PC AC 230V for Home Factory
$79.00 Save $100.00 RRP: $179.00
LED Single Display Automatic Reset Protector Intelligent Adjustable Over Under Voltage Protective Device AC
$31.95 Save $37.05 RRP: $69.00
20-150amp Circuit Breaker Dual Battery Ip67 12v-24v Fuse Manual Reset Waterproof
$16.95 Save $7.00 RRP: $23.95
High Power Time Control Switch 220V Power Supply Automatic Power-off Cycle Controller Daily Weekly 7 Days Programmable
$38.95 Save $7.00 RRP: $45.95
2P Miniature Humanized Visual Window Design Current Miniature Circuit Breaker for Avoid Overload
$23.95 Save $28.00 RRP: $51.95
LCD Display Solar Regulator Solar Charge Controller 10/20/30/40/50/60A Display Solar Controller Battery for Outdoor Multicolor
$45.95
Dc Circuit Breaker 1000v 2 Pole Double Mcb Solar Pv 63 Amp
$7.95 Save $31.00 RRP: $38.95
20-150amp Circuit Breaker Dual Battery Ip67 12v-24v Fuse Manual Reset Waterproof-Good
$16.95 Save $7.00 RRP: $23.95
Rustproof Automatic Auto Truck Fuse Manual Reset Feature Circuit Breaker Stud Bolt with Cover Low Temperature Resistance
$22.95
Tuya Wifi Zigbee Smart Circuit Breaker Over Current Under Voltage Protection Power Metering 1-63a Wireless Remote Control Switch unbrand
$52.95 Save $21.05 RRP: $74.00
Brushless ESC T Plug 3.5MM Banana Plug for RC Car Boat Model
$38.95
Battery Disconnect Switching Circuit Breaker Auto Battery Disconnect Switch Isolator Switch 48V 10A-60A Cut Switch
$64.00
20-150amp Circuit Breaker Dual Battery Ip67 12v-24v Fuse Manual Reset Waterproof-Yvan
$16.95 Save $7.00 RRP: $23.95
Car Audio Inline Circuit Breaker Fus
$34.95
Kuoyuh 98 Series 15A Manual Reset Thermal Overload Protector Switch, 3A-50A Straight/Screw Pin Mini Circuit Breaker
$59.00 Save $70.00 RRP: $129.00
2026 12V-24V 20-150Amp Dual Battery Circuit Breaker with Manual Reset - IP67 Waterproof Fuse for Automotive Use_DP
$29.95 Save $29.05 RRP: $59.00
Residual Current Circuit Breaker with Leakage Protection, 40A 30mA, DZ47LE NXBLE Series
$139.00 Save $80.00 RRP: $219.00
30PCS Name Plates Holder for for 40 OZ Style A
$14.95 Save $4.00 RRP: $18.95
Digital Current Display Microcontroller Spot Welding Machine DIY Control Board
$26.95 Save $11.00 RRP: $37.95
30a 40a 50a 60a 70a 80a 100a 120a 150a 200a 250a 300a Amp Car Circuit Breaker Portable Waterproof 12-48v
$13.95
Auto Circuit Breaker Reset Fuse Inverter Fuse H Inline Fuse B 20-100 Amp
$24.95 Save $24.00 RRP: $48.95