Description
LiftMaster LA400DC 24VDC Replacement Primary Swing Gate Operator Actuator Arm
The LiftMaster LA400DC 24VDC Replacement Primary Swing Gate Operator Actuator Arm is a genuine LiftMaster primary actuator designed for compatible LA400 residential swing gate operator systems. It provides the powered linear actuator assembly responsible for opening and closing the primary gate leaf and is an ideal OEM replacement for an existing LA400 actuator that has become damaged, worn, or failed.
The LA400DC is designed to operate as the primary actuator within the LiftMaster LA400 24VDC residential linear actuator platform. In a single swing gate installation, the LA400DC operates the gate leaf as part of the compatible LA400 control system. In a properly configured dual swing gate installation, the LA400DC serves as the primary actuator while a compatible LA400DCS secondary actuator operates the second gate leaf.
The LA400 platform is designed for residential vehicular swing gate applications and supports compatible gates up to 16 ft. long or 850 lbs. Gate construction, hinge condition, installation geometry, wind loading, hardware, and other site conditions must also be considered when evaluating an installation.
For an existing LA400 system where the control box, batteries, safety equipment, and other components remain serviceable, replacing only the actuator arm can provide a more targeted repair solution than replacing the complete LA400PKGUL operator package.
LiftMaster LA400DC Key Features
- Genuine LiftMaster replacement actuator arm
- Model LA400DC
- 24VDC operation
- Designed for compatible LiftMaster LA400 swing gate operator systems
- Functions as the primary actuator
- Suitable for compatible single swing gate installations
- Serves as the primary actuator in compatible dual LA400 systems
- Residential linear actuator design
- Replacement solution for a damaged, worn, or failed LA400 actuator
- Integrates with compatible LA400 control equipment
- Part of the LA400 platform designed for compatible gates up to 16 ft. or 850 lbs.
- OEM LiftMaster component for maintaining proper system compatibility
What's Included
- (1) LiftMaster LA400DC 24VDC Primary Actuator Arm
Important: This listing is for the LA400DC primary actuator arm only. Control box, LA400DCS secondary actuator, batteries, solar equipment, access-control devices, monitored safety devices, and other gate operator components are not included unless specifically stated.
Compatibility
The LiftMaster LA400DC is designed for compatible LiftMaster LA400 / LA400PKGUL residential swing gate operator systems.
Always verify the existing gate operator model, actuator model, and part number before ordering replacement equipment.
Why Choose the LiftMaster LA400DC?
The LiftMaster LA400DC provides an OEM replacement option for an existing LA400 gate operator where the primary actuator requires replacement but the remainder of the system is still operational.
Rather than replacing the complete LA400PKGUL system when only the actuator assembly has failed, an installer or equipment owner can replace the appropriate actuator while retaining compatible existing control equipment, batteries, access-control equipment, and other system components.
The distinction between the two LA400 actuator models is especially important:
LA400DC = Primary Actuator
LA400DCS = Secondary Actuator
For a single swing gate, the LA400DC serves as the primary actuator. For a compatible dual swing gate, the LA400DC remains the primary actuator while the LA400DCS operates the second gate leaf.
LiftMaster LA400DC Frequently Asked Questions
What is the LiftMaster LA400DC?
The LiftMaster LA400DC is a 24VDC primary actuator arm designed for compatible LiftMaster LA400 residential swing gate operator systems.
It provides the mechanical movement required to open and close the primary gate leaf while working with the compatible LA400 control system.
Is the LA400DC a complete gate operator?
No. The LA400DC is the actuator arm only.
It does not include the complete control box, batteries, access-control equipment, monitored safety equipment, or other components required for a complete automatic gate operator installation.
Is the LA400DC the primary actuator?
Yes. The LA400DC is the primary actuator in the LA400 system.
For a dual swing gate installation, the matching LA400DCS secondary actuator is used to automate the second gate leaf.
What is the difference between LA400DC and LA400DCS?
Their roles within the gate system are different:
LA400DC — Primary Actuator
LA400DCS — Secondary Actuator
The LA400DC is used as the primary actuator, while the LA400DCS is intended for the second gate leaf of a compatible dual LA400 installation.
What size gate is the LA400 platform designed for?
The LA400 platform is designed for compatible residential swing gates up to 16 ft. long or 850 lbs.
Gate dimensions and weight are not the only considerations. Gate construction, hinges, installation geometry, wind loading, hardware, and other site conditions should also be evaluated.
Is the LA400DC 24VDC?
Yes. The LA400 platform uses a 24VDC architecture, and the LA400DC is the primary actuator for the compatible system.
Is the LA400DC residential or commercial?
The LA400 platform is designed primarily for residential vehicular swing gate applications.
For larger, heavier, or more demanding residential/light-commercial swing gates, the LiftMaster LA500 platform may be the more appropriate option.
Can I replace only the actuator arm on my LA400?
Yes, provided the actuator is the component requiring replacement and the remaining compatible LA400 equipment is still serviceable.
The system should be properly diagnosed before replacing components to determine whether the actuator itself is responsible for the problem.
Does the LA400DC include a control box?
No. This listing is for the LA400DC primary actuator arm only.
The compatible LA400 control box and other required system equipment are separate unless specifically stated.
Can the LA400DC be used with a dual swing gate?
Yes, as the primary actuator in a properly configured compatible LA400 dual swing gate system.
The second gate leaf uses the LA400DCS secondary actuator.
Can I use an LA400DCS instead of an LA400DC?
The two actuator models serve different roles within the LA400 system. The LA400DC is the primary actuator, while the LA400DCS is the secondary actuator intended for compatible dual-gate installations.
Customers should verify which actuator requires replacement before ordering.
Can the LA400 platform be solar powered?
The LA400 platform supports compatible solar configurations when properly equipped and sized.
For installations specifically centered around residential solar operation, the LiftMaster LA412 is LiftMaster's dedicated 12VDC residential solar linear actuator platform.
Does replacing the actuator eliminate the need for safety devices?
No. Replacing the actuator does not change the gate installation's entrapment-protection requirements.
Appropriate monitored entrapment protection devices must be installed based on the gate configuration, identified entrapment zones, current LiftMaster installation instructions, applicable UL 325 requirements, and local codes.
LiftMaster LA400 Manuals & Resources
GatePoint Solutions provides applicable LiftMaster LA400 installation manuals, wiring diagrams, product documentation, specifications, troubleshooting resources, and technical materials in the Resources section below.
Always reference current LiftMaster documentation when installing, servicing, programming, or troubleshooting an automatic gate operator.
LiftMaster LA400 Replacement Parts
Need additional components for an existing LA400?
Shop our complete selection of LiftMaster LA400PKGU/UL Replacement Parts, including control boards, actuator components, batteries, harnesses, brackets, control-box components, electrical components, hardware, and other service parts.
Shop LiftMaster LA400PKGU/UL Replacement Parts →
Need the secondary actuator for a dual gate?
LiftMaster LA400DCS 24VDC Replacement Secondary Swing Gate Operator Actuator Arm →
Resources: