Siemens Building Technology 331-2963 Actuator 321042-401 the internal "canoe" may be

the internal "canoe" may be seized

Does this unit come with the secondary fuse installed

reducing the need for extensive OEM-specific inventory

Durable Construction: The dust-protected snap-acting contacts prevent premature wear in demanding mechanical environments

3 ohms allows for accurate bench testing before installation

Siemens Building Technology 331-2963 Actuator 321042-401 the internal "canoe" may beThe Siemens 331 2963 is a rugged, No. 4 pneumatic damper actuator designed for reliable control in high demand HVAC and fire smoke systems. Built with a durable metal fabricated body, this piston type actuator features a 4 inch stroke and a nominal spring range of 8 to 13 psi, making it ideal for the gradual or positive actuation of dampers in ventilating systems and mixing boxes. This specific model is configured for a front mount installation using