The AUTOMAX 805405-1R is a single-phase field power module designed by Reliance Electric (now part of Rockwell Automation) for DC motor control in industrial automation systems. As part of the AutoMax SF3000 distributed power system, it provides adjustable voltage and current-regulated excitation for critical applications such as motor drives, power generation, and process control. Below is a detailed breakdown of its technical specifications, functional capabilities, and practical applications.

Parameter	Specification
Model	805405-1R
Type	Single-Phase Field Power Module (SF3000 Series)
Input Voltage	120–460 V AC (adjustable via software)
Output Current	15 A DC (rated)
Bridge Type	Non-reversing (S2) SCR full-wave bridge
Protection Features	dv/dt protection, internal AC line fuses, self-firing clamp for inductive voltage spikes
Rectifier Configuration	4 SCRs (silicon-controlled rectifiers)
Isolation	Electrically isolated power cube
Mounting	Panel-mount or DIN rail (35 mm)
Dimensions	N/A (typically integrated into PMI racks)
Compatibility	Requires integration with three-phase armature power modules in the same PMI rack
Software	Configured via AutoMax Programming Executive software

• • Overcurrent Protection: Shuts down the module if output current exceeds 15 A.
  • Inductive Voltage Spike Protection: The self-firing clamp safeguards against voltage surges caused by sudden current interruptions .
  • Thermal Overload Detection: Prevents damage from prolonged high-temperature operation.

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