Markel 29157004 Limit R-449A The KMC Controls MCP-1040-5211 is

The KMC Controls MCP-1040-5211 is a heavy-duty pneumatic damper actuator purpose-built for high-torque linear motion control in commercial HVAC systems

as the voltage rating indicates the maximum surge it can handle

Look for carbon scoring or pitting on the contacts

verify the wiring schematic of the specific air handler to ensure proper 24V transformer load management

Markel 29157004 Limit R-449A The KMC Controls MCP-1040-5211 isThe Markel 29157004 Limit is a mission critical high limit safety switch designed for precision thermal protection in HVACR systems. Specifically engineered for duct heaters and electric heat assemblies, this manual reset limit prevents catastrophic equipment failure by breaking the electrical circuit when internal plenum temperatures exceed safe thresholds. Identified by the technical designation MFHE LIMIT RD103 002 104C, this component triggers at