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Black rectangular wall power adapter with two flat pins and a barrel output plug

Lei Electronics Inc.

Lei Electronics Inc. 574091-001-00 power adapter 12V 750mA

SKU CH-0SRK-4JZXN MPN 574091-001-00

Wall-mount AC adapter converts 100–127 V 60 Hz input to 12 V 750 mA output for compatible devices

  • Delivers stable 12 V 750 mA output for reliable device operation
  • Accepts 100-127 V 60 Hz input for North American mains compatibility
  • Tested for broken wires and secure power jacks to ensure dependable connection
  • Built-in protection against incorrect voltage short circuit and overheating safeguards equipment
  • Genuine LEI manufacture with quality materials provides consistent performance

What this adapter is

This Lei Electronics power adapter delivers 12 V at 750 mA for small electronics that need a regulated DC supply. It accepts 100‑127 V AC at 60 Hz and is built to the original manufacturer’s specification.

Thermals noise and power draw

The unit draws 0.25 A from the mains and converts it to a steady 12 V output without a fan, so operation is silent. Normal use produces only modest warmth from the internal components.

Protections and testing included

Each adapter is tested for broken or twisted wires, secure power jacks, and the absence of cracks or loose particles. Built‑in safeguards guard against incorrect voltage, short circuit, and internal overheating.

Highlights

  • Delivers stable 12 V 750 mA output for reliable device operation
  • Accepts 100-127 V 60 Hz input for North American mains compatibility
  • Tested for broken wires and secure power jacks to ensure dependable connection
  • Built-in protection against incorrect voltage short circuit and overheating safeguards equipment
  • Genuine LEI manufacture with quality materials provides consistent performance

Specifications

Model574091-001-00

Questions about this item

How do I connect the 574091-001-00 adapter to a 100-127V 60Hz mains supply, and what polarity does the output jack require?

Plug the unit directly into a 100-127V~ 0.25A 60Hz wall outlet; the barrel connector delivers 12V 750mA with centre-positive polarity, so match your device’s jack accordingly.

Which parts of the 574091-001-00 are most likely to need replacement after extended use?

The fixed mains cable and the output barrel jack endure the most physical stress; inspect them periodically for frayed insulation or a loose centre pin and replace the whole adapter if either shows damage.

What is the first limitation you hit when running the 574091-001-00 continuously at full load?

The 12V 750mA rating caps sustained output at 9 watts; exceeding this triggers the built-in short-circuit and over-temperature protection, shutting the adapter down until the load is reduced.

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