Product Details:

Allen-Bradley 1335-DOB belongs to Rockwell Automation Bulletin 1335 series adjustable frequency AC drive. Rated 5HP / 3.7kW, 380-460V three-phase AC input, output current 8.8A. This is a discontinued general-purpose VFD designed for three-phase AC motor variable speed control in industrial automation systems. It adopts full-wave diode bridge rectifier and power transistor inverter design, supports programmable V/Hz curve and auto torque boost function to adapt to different load characteristics.

This inverter adopts NEMA Type 1 (IP20) enclosure and supports cabinet panel mounting. It uses V/Hz open loop control strategy, supports continuous speed regulation for fans, pumps and medium-duty conveyor equipment. It integrates comprehensive built-in protection functions including overcurrent, overvoltage, undervoltage, overheat and motor electronic overload protection to prevent equipment damage under abnormal working conditions. It accepts 0-10V or 4-20mA analog signals for remote speed setting and supports optional dynamic braking kit for fast stop applications. It complies with UL industrial standards and is widely used for spare part replacement and maintenance of legacy production lines.

Each Allen-Bradley 1335-DOB undergoes strict factory testing before shipment, including power-on running test, insulation resistance test and protection function verification to ensure stable performance in industrial automation environments.

Specifications:

Brand: Allen-Bradley (Rockwell Automation)

Model: 1335-DOB

Product category: Bulletin 1335 adjustable frequency AC drive

Rated power: 5HP / 3.7kW

Input voltage: 380-460V three-phase AC

Output current: 8.8A

Output frequency: 0~240Hz programmable

Enclosure: NEMA Type 1, IP20

Mounting method: Panel mounting

Feature: Auto torque boost, programmable V/Hz pattern, optional dynamic braking, multi-protection, discontinued legacy drive

Application: Pump, fan, conveyor, old machine motor speed control

Working medium: Indoor industrial air environment

Working environment: Industrial site with normal vibration and temperature fluctuation