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PHOENIX CONTACT

KNX power supply 640mA - STEP3-PS/1AC/KNX/640/LPT

SKU: 1477019
(1)
✓ UL Listed
This product is certified by a Nationally Recognized Testing Laboratory (NRTL) — such as UL, ETL, or CSA — for direct installation in USA projects. Meets NEC requirements without additional AHJ approval.
$340.00 USD
-50% $680.00 USD $340.00 USD
In stock
On backorder
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The STEP3 KNX bus power supply from the Phoenix Contact STEP POWER family is the professional choice for modern building automation. It is the first bus power supply with an active KNX filter circuit that adapts dynamically to the connected KNX devices, increasing the efficiency and stability of the entire bus system. The integrated color display shows all relevant KNX status information at a glance — current bus load, output voltage, and historical values as a built-in diagnostic tool. With its AC/DC wide-range input, the unit can be deployed worldwide on any mains supply.

Key Features

  • Active KNX choke circuit — dynamically adapts to bus load for maximum efficiency
  • Multifunctional color display with real-time bus diagnostics (bus load, voltage, history)
  • Wide-range input: 85–264 V AC / 90–275 V DC — usable worldwide
  • Tool-free wiring with lever Push-in connection technology
  • Compact 3 DIN-module width (54 mm) — saves space in the distribution board
  • DIN rail snap-on or direct screw mounting on flat surfaces
  • Designed for surface-mounted or flush-mounted distributors (VDE 0603-1, DIN 43871)

Technical Specifications

  • Output: 30 V DC / 640 mA (19.2 W), integrated KNX choke
  • Input voltage: 100–240 V AC nominal (85–264 V AC / 90–275 V DC range)
  • Connection: Lever Push-in terminals
  • Mounting: DIN rail (EN 60715) or direct mounting
  • Width: 3 DIN modules (54 mm)
  • Certifications: UL/C-UL Listed UL 61010-1 and UL 61010-2-201, KNX certified
  • Manufacturer part number: 1477019

Orders over $500 ship free within the USA (under 50 lbs). Orders under $500 carry a low cost shipping fee.

Most in-stock orders ship within 1–2 business days from Miami, FL. Delivery typically takes 3–5 business days depending on destination.

For freight or oversized orders, our team will contact you with a custom quote.

All KNXSupply products are covered by the manufacturer's warranty, ranging from 1 to 3 years depending on the brand. Warranty terms are fulfilled directly by the manufacturer.

If you experience any issue, contact us and we'll coordinate the claim process on your behalf.