ebm-papst is a well-known provider of many various types of cooling fan, including simple tubeaxial designs like 8414N/2H. You may also spot this fan in its 8414N/2HP, with an extra ‘P’ suffix. What’s the difference between these two?
In this case, the ‘P’ suffix indicates that the fan has a PWM (Pulse Width Modulation) control line, to allow for digital control of the fan’s speed. Non-PWM applications should stick with the original fan if possible, for ease of installation and simplified maintenance.