Progressive Automations Electric Linear Actuator 4 in Stroke - 400 lbs

In this review of the Progressive Automations PA-04 4 in stroke linear actuator, the bottom line is simple: it is a capable, well-built 12 VDC actuator for applications that need medium force and reliable weather resistance. The unit's IP66 rating and 400 lb force option make it an attractive choice for outdoor equipment, automotive hatches, and home automation projects. The reviewer found its quiet operation and solid build quality to be the standout reason to buy, while noting installers will need to source mounting brackets separately.

Key Features

• 12 VDC Operation: Standard 12 VDC power makes it easy to integrate into common vehicle and low-voltage control systems.
• 4 in Stroke: The 4 in stroke gives a compact travel range suitable for hatches, small doors and furniture adjustments.
• 400 lb Force Rating: A 400 lb force option provides the muscle to lift heavy lids or move substantial mechanical loads without strain.
• IP66 Water Resistance: The IP66 ingress protection helps the actuator survive dust and powerful water jets, allowing outdoor and agricultural use.
• 2-Pin Molex Connector: The standard Molex Mini-Fit Jr 2-pin connector simplifies wiring and replacement in existing systems.
• ISO 9001:2015 Quality: Manufacturer quality certification offers reassurance on consistency and long-term durability.

Who It's For

The PA-04 4 in stroke actuator is best suited to hobbyists, fabricators and small manufacturers who need a robust, weather-resistant linear drive for automotive, furniture, or light industrial tasks. Its combination of speed, quiet operation and 400 lb force makes it practical for engine hatches, window openers, electric sofas and toolboxes.

Those who should look elsewhere include users who require preinstalled mounting hardware or who need extremely long strokes beyond the 40 in upper range offered in the family; also consider heavier industrial actuators if continuous duty at maximum force is required.

Pros & Cons

Pros

• Solid build and quiet operation make it unobtrusive in living space and vehicle installations.
• IP66 rating allows use outdoors or in dusty environments without frequent replacement.
• High force option and compact 4 in stroke handle heavy lids and precise adjustments reliably.
• Standard Molex connector speeds installation and replacement in existing systems.

Cons

• Mounting brackets are not included, so additional hardware is required for installation.
• At least one customer reported durability issues, so heavy continuous-duty use should be evaluated carefully.

Specifications

Model	PA-04 4 in stroke
Voltage	12 VDC
Stroke Length	4 in
Force Rating	400 lbs
Ingress Protection	IP66
Connector	2-Pin Molex Mini-Fit Jr
Quality Standard	ISO 9001:2015

Our Verdict

The PA-04 4 in stroke actuator is a practical, value-minded choice for projects that need a quiet, weather-resistant linear drive with substantial lifting force. It suits automotive, home automation and light industrial tasks, but buyers should budget for mounting hardware and review duty-cycle expectations for heavy continuous use.

Frequently Asked Questions

Does the actuator work outdoors?
The IP66 rating protects against dust and strong water jets, making it suitable for outdoor applications with appropriate mounting and sealing.

Is wiring difficult?
Wiring is straightforward thanks to the standard 2-pin Molex Mini-Fit Jr connector, which matches many control systems and replacement harnesses.

Are mounting brackets included?
No, mounting brackets are not supplied and should be purchased or fabricated separately to match the installation.