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MEAN WELL KNX40E1280D KNX Power Supply

The KNX-40E-1280(D) is a compact, high-efficiency power supply designed for building automation. It delivers 1280mA with a 38.4W output, supporting KNX bus choke and auxiliary power. Features include wide temperature operation (-30°C to +70°C), LED indicators for status monitoring, and protection against short circuit, overload, and overvoltage. Suitable for lighting, HVAC, security, blinds, and monitoring systems, it meets safety standards EN61558 and EN50178, with an impressive MTBF of over 487,000 hours, ensuring reliable performance in intelligent building controls.

Authorized Distributors
Source:DigiKey
Part No:KNX-40E-1280D
Stock:0
Inv Date:06-16-2026
Price: Unit price: $161.5
Buy/RFQ:
Part No:KNX-40E-1280D
Stock:0
Inv Date:06-17-2026
Price: Unit price: $161.5
Buy/RFQ:
Part No:KNX-40E-1280D
Stock:0
Inv Date:06-16-2026
Price: Unit price: $192.69
Buy/RFQ:
Part No:KNX-40E-1280D
Stock:0
Inv Date:06-16-2026
Price: Unit price: $161.5
Buy/RFQ:
Part No:KNX-40E-1280D
Stock:0
Inv Date:06-16-2026
Price: Unit price: $161.5
Buy/RFQ:

MEAN WELL KNX40E1280D KNX Power Supply Specifications:

  • Rated Current: 1280mA
  • Rated Power: 38.4W
  • Input Voltage Range: 180~264VAC, 176~280VDC
  • Output Voltage: 30V (bus), additional 30V for auxiliary
  • Ripple & Noise: Max. 100mVp-p
  • Protection: Short circuit, Overload, Over voltage
  • Efficiency: 86% at full load
  • Operating Temperature: -30°C to +70°C
  • MTBF: Over 487,000 hours
  • Dimensions: 72 x 90 x 57mm (W x H x D)
  • Mounting: DIN rail TS35/7.5 or TS35/15
  • Safety Standards: EN61558, EN50178
  • Working Humidity: 20~95% RH non-condensing
  • Isolation Voltage: 4.2kVAC (I/P-O/P)

Buy the MEAN WELL KNX-40E-1280 Reliable Building Automation Power Supply

Purchase the MEAN WELL KNX Power Supply instantly online to ensure reliable building automation performance. With a compact design, high efficiency, and robust protections, it supports KNX bus choke and auxiliary power for automation, lighting, HVAC, security, and monitoring systems. Easy to install on DIN rails, it features status LEDs, wide temperature range, and compliance with safety standards, offering over 487,000 hours of MTBF. Invest now for dependable, energy-efficient building control solutions.

Get MEAN WELL KNX 40E 1280 today—built for precision, long-lasting durability, and seamless building automation integration.

Frequently Asked Questions

Where can I buy MEAN WELL KNX40E1280D?

You can click on the BUY or RFQ button to purchase KNX40E1280D from an authorized MEAN WELL distributor.

How do I troubleshoot issues or seek technical support for part KNX40E1280D?

You can download the KNX40E1280D datasheet or visit the MEAN WELL website for support.

Who is the manufacturer of KNX40E1280D?

MEAN WELL

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