PRODUCT DATA
63-2607-26
MSXX10, MSXX20 Series
88 AND 175 LB-IN (10 AND 20 NM) SPRING RETURN DIRECT COUPLED
ACTUATORS
APPLICATION
MS31XX, MS41XX, MS71XX, MS75XX, MS81XX Spring
Return Direct Coupled Actuators (DCA) are used within
heating, ventilating, and air-conditioning (HVAC) systems.
They can drive a variety of quarter-turn, final control
elements requiring spring return fail-safe operation.
Applications include:
• Volume control dampers, mounted directly to the drive
shaft or remotely (with the use of accessory hardware).
• Quarter-turn rotary valves, such as ball or butterfly
valves mounted directly to the drive shaft.
• Linear stroke globe or cage valves mounted with
linkages to provide linear actuation.
FEATURES
• Brushless DC submotor with electronic stall
protection for floating/modulating models.
• Floating/Modulating models can provide two-
position (SPST) control.
• Brush DC submotor with electronic stall protection
for two-position models.
• Self-centering shaft adapter (shaft coupling) for
wide range of shaft sizes.
• Access cover to facilitate connectivity.
• Metal housing with built-in mechanical end limits.
• Spring return direction field-selectable.
• Shaft position indicator and scale.
• Manual winding capability with locking function.
• UL (cUL) listed.
• All Models are plenum-rated per UL2043.
• Models available with 3-foot, 18 AWG color-coded
cable.
• Sylk-enabled models available.
• Features shown in Table 1.
Contents
Application .....................................................................................
Features ..........................................................................................
Specifications ...............................................................................
Operation ....................................................................................... 15
Checkout ........................................................................................ 16
