20DD156A3ENNAENBA

The 20DD156A3ENNAENBA from Allen-Bradley is a high-performance adjustable frequency AC drive well-suited for demanding industrial environments. This unit operates on a three-phase electrical supply with a nominal voltage of 480V AC and can support a normal-duty current of up to 156 amps. Built within an IP20-rated enclosure that adheres to NEMA Type 1 standards, the drive is designed for indoor applications and provides basic protection against dust and contact.

A full numeric LCD provides users with essential feedback regarding system performance and settings. Unlike some models, the 20DD156A3ENNAENBA does not include a braking system, but it compensates with an adjustable bus undervoltage trip feature that enhances operational safety.

Thermal management is a priority, as indicated by the heat sink thermistor continuously monitored by a microprocessor, which triggers an overtemperature shutdown if necessary. For added reliability, the drive supports logic control ride-thru for up to 0.25 seconds when inactive, ensuring that settings are preserved during brief power interruptions. In cases of full load scenarios, the unit can maintain power for 15 milliseconds, which serves to protect operations during short outages. Overall, this adjustable frequency AC drive is optimized for efficiency and functionality, making it a valuable component in various industrial setups.