Johnson Controls MM-FACLTD-0 Electric Actuator, Fail-Safe, On/Off Floating Control, 24 VAC/DC, Direct-Mount for HVAC Dampers and Valves

Johnson Controls MM-FACLTD-0 Electric Actuator, Fail-Safe, On/Off Floating Control, 24 VAC/DC, Direct-Mount for HVAC Dampers and Valves

Condition: Used. Shows light signs of operational wear, including surface scuffs or residue. Mechanical and electrical components appear intact; functional testing recommended prior to reuse.

The Johnson Controls MM-FACLTD-0 (also known as MMFACLTD0) is a direct-coupled electric actuator designed for precision control of HVAC dampers and valves in commercial and industrial automation systems. This actuator features on/off or floating point control, operates at 24 VAC/DC, and includes an integrated mechanical spring return (fail-safe function) to ensure a default position in the event of power loss.
The actuator is part of Johnson Controls’ MM (Modular Motor) series, known for reliable performance, compact housing, and tool-free mounting. The FACLTD suffix designates fail-safe with clutch and floating control operation. Its universal direct-mount design allows fast installation on dampers or valve linkages without the need for additional brackets or link kits.
It is typically used in systems where loss of control signal must revert damper/valve to a safe position, such as smoke control, air handling, and mission-critical ventilation systems.

🔧 Features
Model: MM-FACLTD-0 / MMFACLTD0
Control Type: Floating Point / On-Off
Voltage: 24 VAC or 24 VDC
Fail-Safe: Spring return to default position
Torque Output: Typically 44 in-lb (5 Nm) or similar (exact may vary by model revision)
Mounting Type: Direct-coupled (non-geartrain required)
Rotation Angle: 90° (adjustable limits possible)
Auxiliary Switches: Not included in this version
Housing: Compact, impact-resistant plastic with integrated mounting hardware
Manual Override: Lever or clutch for test positioning during service
Ambient Operating Range: -20°F to 130°F (-29°C to 54°C)

🛠️ Applications
This actuator is typically installed in:
HVAC air dampers (supply, return, exhaust)
VAV box dampers and mixing boxes
Chilled water and hot water control valves
Fail-safe systems in critical HVAC zones
Commercial air handlers and RTUs
Pressurization, isolation, and smoke exhaust dampers

🔁 Cross-Referenced Models
Comparable Johnson Controls or legacy models:
Johnson Controls M9206-FGA-2 (Fail-safe, 24V Floating)
Johnson Controls VA9203-GGA-2S (Similar small valve actuator)
Belimo LF24-SR (Fail-safe actuator, 24V floating)
Honeywell MS4104F1210 (Floating actuator, spring return)
Siemens GDE131.1P (Fail-safe, floating, 24V actuator)

🔄 Comparable Products
Belimo LF24-MF and LF24-SR actuators
Honeywell ML7421 or ML6161 actuators
Siemens OpenAir GMA/GDE Series actuators
KMC MEP-5000 Series actuators
Schneider Electric MF20 Series

🧩 Assembly and System Compatibility
Can be mounted directly to:
Round or rectangular HVAC dampers (up to specified torque limits)
Mixing boxes or economizer assemblies
2-position or modulating water valves (when configured with floating point input)
Compatible with Johnson Controls control systems and any building automation controller providing floating control signals (3-point floating or on-off)

Trademark Disclaimer:
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

🔁 Related
MMFACLTD0 actuator
24V floating actuator with spring return
HVAC damper actuator with fail-safe
On/off HVAC motorized actuator
Johnson Controls MM series actuator

📈 Common Requests:
“Is MM-FACLTD-0 compatible with Belimo 24V floating actuators?”
“How to wire Johnson Controls MMFACLTD0 actuator for floating control?”
“Used HVAC actuator 24VAC with spring return”
“Fail-safe actuator for 24V HVAC damper”
“What does MM-FACLTD-0 actuator control – valve or damper?”

All product names, trademarks, and registered trademarks are the property of their respective owners. Use of these names does not imply any affiliation or endorsement.

P115