MEAN WELL NDR-240-24 DIN Rail Power Supply 240W 24V - Reliable

In this review the MEAN WELL NDR-240-24 is evaluated as a practical DIN rail power supply for industrial control panels and automation projects. The bottom line: it is for technicians and integrators who need a compact, reliable 24V 10A source with built-in protections and high efficiency. The review finds the unit stands out for its slim TS-35 rail compatibility and active PFC function, making it a sensible choice where stable 24VDC power and regulatory compliance matter most.

Key Features

• 24V regulated output: Provides a steady 24VDC at up to 10A suitable for PLCs, relays, and control devices without frequent adjustments.
• Wide input range: Accepts 90~264VAC or 124~370VDC so it can be installed in varied industrial mains environments.
• Protections built in: Short circuit, overload, over voltage and over temperature protection help safeguard connected equipment and reduce downtime.
• Active PFC: Built-in active power factor correction improves efficiency and reduces reactive current on industrial distribution systems.
• Compact DIN rail form: Slim design fits TS-35/7.5 or TS-35/15 rails to save panel space while delivering 240W output capacity.
• Industrial approval: UL 508 approval confirms suitability for industrial control equipment installations.

Who It's For

The MEAN WELL NDR-240-24 is aimed at electricians, cabinet builders and automation engineers who need a dependable 24VDC source for medium-power control systems, instrumentation and factory I/O. Its compact DIN rail footprint and broad input tolerance suit retrofit projects and new control panels where space and reliability are priorities.

It is less relevant for low-power hobby electronics or consumer desktop setups where smaller, lower-wattage adapters are more economical. Also, systems requiring isolated multi-output rails will need a different supply since this unit provides a single 24V output only.

Pros & Cons

Pros

• High efficiency (around 88.5%) reduces heat and improves energy use in enclosures.
• Robust protection suite reduces risk to downstream devices from faults.
• Wide AC/DC input range and active PFC make it versatile across installations.
• UL 508 approval supports industrial control equipment compliance.

Cons

• Single output design may require additional supplies for multi-rail systems.
• Ripple and noise up to 150mVp-p may be a consideration for very noise-sensitive analog circuits.

Specifications

Output Voltage	24VDC
Rated Current	10A
Rated Power	240W
Input Voltage	90 ~ 264VAC / 124 ~ 370VDC
Protections	Short circuit, Overload, Over Voltage, Over Temperature
Ripple & Noise (max.)	150mVp-p
Certifications	UL 508 (Industrial Control Equipment)

Our Verdict

The NDR-240-24 is a practical, value-oriented industrial DIN rail supply for professionals who need a reliable 24V 10A source with protective features and active PFC. It delivers a strong balance of efficiency, protections and mounting convenience, making it a smart choice for control panels and automation installations where a single solid 24V rail is required.

Frequently Asked Questions

Can this unit be mounted on standard DIN rail?
Yes, it is designed for TS-35/7.5 or TS-35/15 mounting rails used in industrial cabinets.

Is the output protected against short circuits?
Yes, the supply includes short circuit, overload, over voltage and over temperature protections to protect the load and the unit.

Will it handle wide input voltages?
Yes, the input accepts 90~264VAC and 124~370VDC, suitable for varied mains conditions.