400µF (400uF) 300VAC Motor Start Capacitor | E348072 | NGM 61B4D300400NNCA

What does a 400µF motor start capacitor do?
A 400µF start capacitor provides the initial electrical boost required to start a single-phase electric motor. It helps generate the torque needed to overcome inertia and start the motor smoothly.

Where is a 400µF start capacitor commonly used?
400µF start capacitors are commonly used in air compressors, water pumps, HVAC systems, and refrigeration equipment where strong starting torque is required.

What happens if a 400µF start capacitor fails?
If the capacitor fails, the motor may hum without starting, struggle under load, or trip circuit breakers due to increased current draw.

Can I replace a 400µF capacitor with a different µF rating?
No. Always replace the capacitor with the same microfarad (µF) rating and voltage specification to ensure proper motor performance and avoid damage.

What is the difference between a start capacitor and a run capacitor?
Start capacitors are used only during motor startup to provide high starting torque, while run capacitors remain in the circuit during normal operation to improve efficiency.

How can I tell if my start capacitor is faulty?
Common signs include a motor that hums but won’t start, slow or inconsistent startup, overheating, or repeated tripping of electrical protection devices.

Type: Motor Start Capacitor

Capacitance: 400µF (400uF)

Voltage: 300VAC

Applications: Electric motors, compressors, HVAC units, pumps

Code: E348072

Identification: NGM 61B4D300400NNCA

Terminals: Lug-style terminals

Mounting: Stud mount

Design: Heavy-duty construction for high-load motor startup

Durable Construction
Housed in high-strength plastic for enhanced durability and dependable performance in demanding environments.

Efficient Motor Starting
Delivers robust initial torque to ensure smooth and reliable motor startups, reducing the risk of failure or delay.

Hassle-Free Installation
Equipped with lug-style terminals and 120mm leads for quick, straightforward installation in both residential and industrial settings.

Versatile Mounting Options
Designed for stand-alone mounting, making it easy to integrate into new builds or retrofit into existing systems.

Stable Power Output
Rated for 300VAC, this capacitor ensures consistent and reliable power delivery under heavy electrical loads.

Secure and Steady Fit
Features a 4mm mounting stud for firm attachment and excellent resistance to vibration.