Moxa Power Supplies

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Industrial power supplies are electrical devices that take electric power from an input source, transform it, and send it to the output load. The input and output power can either be alternating current (AC) or direct current (DC). The goal of the power supply is to power the load with the correct current and voltage. Power supplies that are designated for industrial use are required to have safety approvals, handle high power density and operate in harsh environments.

Moxa DR Power Supply Series has been phased out, and has been replaced by the HDR and NDR Series.

Moxa HDR-60-24 Power Supply Series is designed specifically for industrial applications. They have a plastic housing and support an AC input range from 85 to 264 VAC and operate between -30 to 70 degrees Celsius. The small form factor makes them ideal for installation in small spaces and they are equipped with constant current mode for overload protection.

Moxa NDR DIN Rail Power Supply Series is designed for use in industrial applications. They have a metal housing and support an AC input range from 90 to 264 VAC and operate between -20 to 70 degrees Celsius. The 40 to 63 mm slim form factor enables the power supplies to be easily installed in small spaces and they feature current mode to provide overload protection.

Moxa MDR Power Supply Series supports inrush current protection of 30 A at 115 VAC and 60 A at 230 VAC. The series has an operating temperature range of -20 to 70 degrees Celsius and a three year warranty, which ensures reliability in operating in harsh environments. It has passed a 100% full load burn-in test, is CE marked, is UL/CUL listed and TÜV/CB certified. There are also models available with output ratings from 40 W to 60 W with 24 VDC output.

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Moxa MDR-60-24 Power Supply 24V 2.5A

$138.74 $195.30

Moxa 60W-2.5A DIN-Rail 24 VDC power supply with universal 85 to 264 VAC input,-20 to 70 C operating temperature. Provides a reliable DC power source for any industrial control system. Combining wide operating tempeature range (-20~70 C),compact enclosures,industrial standards and approvals,and offering short circuit,over load,over voltage,and over temperature protection,the MDR series makes your power supply choice a simple one.

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Moxa MDR-40-24 Power Supply 24V 1.7A

$105.37 $148.40

Moxa 40W-1.7A DIN-Rail 24 VDC power supply with universal 85 to 264 VAC input,-20 to 70 C operating temperature. Provides a reliable DC power source for any industrial control system. Combining wide operating tempeature range (-20~70 C),compact enclosures,industrial standards and approvals,and offering short circuit,over load,over voltage,and over temperature protection,the MDR series makes your power supply choice a simple one.

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How to Select and Size a Power Supply

A power supply alters power from one type to another and ensures that the voltage being delivered is the proper level, with the right characteristics, to enable equipment to function properly.

Power rating

If a power supply is rated for 5 amps at 24 VDC, (where voltage times amperage equals total wattage) the power rating for that power supply is roughly 120 Watts. This rating is very important because if this number is exceeded, it can cause a failure of the power supply and potentially damage other hardware wired downstream or on the load side of the device. To avoid this failure is important that the power supply is sized correctly.

Sizing a power supply

To properly size a power supply, identify what devices will be reliant on the power supply and what their total power consumption will be. The sum of all power to be delivered needs to be less than the total power rating of the power supply. For example, if the devices combined for a total of 100 Watts, then a 5 AMP power supply, which is rated for up to 120 Watts, would be sufficient. However, if the sum of those devices’ total power requirement is greater than that of the power supply rating, then a different power supply should be selected. It is important to allow for a buffer or safety factor. When sizing a power supply, never select a power supply that is rated for the same amount of power as the total power requirement of all of the devices. Oversizing the power supply will allow for changes and additions that may occur in the future.

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