Description
Schneider Electric (Barber Colman) M400A-VB Forta Globe Valve Actuator Overview
The Schneider Electric (Barber Colman) M400A-VB is a high-performance Forta series globe valve actuator engineered for precise control in commercial HVAC and building automation applications. Designed for screw-mount installation, this actuator delivers reliable, repeatable valve positioning with a robust 90 Lbf (pound-force) output — providing the driving force needed for demanding hydronic and steam system valve control.
Control Flexibility
The M400A-VB supports both floating and proportional control modes, making it highly versatile across a wide range of building automation and direct digital control (DDC) systems. Proportional control is compatible with multiple industry-standard input signals:
- 0 to 10 Vdc input signal
- 2 to 10 Vdc input signal
- 4 to 20 mA input signal (requires 500 Ohm resistor, included)
Position Feedback
For closed-loop control and system verification, the M400A-VB provides a 2 to 10 Vdc feedback signal, allowing the building automation system or controller to confirm actual valve position in real time.
Electrical Specifications
- Supply Voltage: 24V
- Control Input: 0–10 Vdc, 2–10 Vdc, or 4–20 mA (with 500 Ohm resistor)
- Position Feedback Output: 2–10 Vdc
- Actuator Force: 90 Lbf
Mounting & Installation
- Screw mount design for secure, stable attachment to compatible globe valves
- Part of the Forta series — engineered for straightforward field installation and long-term reliability
Applications
Ideal for use in commercial HVAC systems, hydronic heating and cooling, chilled water coil control, hot water coil control, and steam valve applications where precise modulating or floating control is required.
Why Choose the Schneider Electric M400A-VB?
- Dual control mode capability: floating or proportional
- Multi-signal input compatibility for integration with diverse control systems
- Real-time 2–10 Vdc position feedback for verified valve positioning
- 90 Lbf actuator force for reliable operation on globe valves
- Trusted Schneider Electric (Barber Colman) quality and engineering
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