The 584-458 is a Piper OEM electrical contactor solenoid designed for 12V aircraft electrical systems with a current rating of approximately 100A. It functions as a heavy-duty electrically actuated switch used to control high-current circuits within the aircraft’s electrical power distribution system.

In typical Piper aircraft applications, this contactor is used for battery master switching, starter engagement, or main power distribution control, depending on aircraft model configuration. When energized by a low-current cockpit switch signal, the solenoid closes internal high-current contacts, allowing large electrical loads to be safely controlled without routing high current through cockpit switches.

The 100A rating indicates suitability for moderate-load aircraft electrical systems commonly found in light single-engine and some multi-engine piston aircraft. It is designed to handle repeated switching cycles under load while maintaining reliable contact integrity.

Constructed with a durable metal housing and high-reliability internal copper or silver-alloy contacts, the contactor is engineered for low resistance, high durability, and resistance to arcing. The coil is designed for 12V operation, matching standard general aviation electrical systems.

Because it is part of the primary electrical distribution system, proper installation and maintenance are essential for safe aircraft operation. Failure of the contactor can result in loss of electrical power distribution or inability to engage starter systems.

Key features include:

Piper 584-458 electrical contactor solenoid (OEM component)
12V coil operation for standard GA electrical systems
Rated for approximately 100A continuous current
Used in battery, starter, or main power switching circuits
Provides remote control of high-current electrical loads
Durable metal housing with vibration-resistant design
High-conductivity internal contacts (copper/silver alloy)
Designed for repeated cycling and arcing resistance
Critical component in aircraft electrical power distribution
Direct replacement part per Piper IPC specifications