How to Protect Your Power Supply: Sizing Breakers and Ensuring Specifications

Question:

If you're looking for a power supply that can handle 120 volts on the input and has a 1.25 amp 24 dc output, check out the link provided for more information. To properly size a breaker to isolate and protect the input side, consider the specifications of the power supply and ensure it meets the necessary requirements. Remember to consult the product datasheet for further details: https://cdn.automationdirect.com/static/specs/cutsheet/2687-2142_cutsheet.pdf.

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For optimal protection and reliable performance, a type C circuit breaker with a capacity of 4 amps is recommended when connecting to a power supply unit (PSU) to ensure no intermittent tripping during startup. It is crucial to consider the wire size used, as this directly affects the level of protection provided. Allowing for a full load current of 150% on startup will ensure seamless power delivery without any disruptions.

When starting up, the supply may draw up to 20 Amps, so it's crucial to select a model that can handle this initial surge. It's important to note that the protection in place is primarily for the wiring leading to the power supply and to prevent any damage in case of a fault. Remember, if the power supply experiences a fault, it will no longer be functional. It's recommended to choose a power supply with high inrush current capability to prevent any issues during startup.

I consistently adhere to manufacturer-recommended circuit protection guidelines. When it comes to circuit protection for power supplies, it's important to refer to technical data such as the Eco 2 power supply available at WAGO USA. This 1-phase power supply delivers a 24 VDC output voltage with a 1.25 A output current, complete with a DC-OK LED indicator. To purchase this circuit protection solution, visit the WAGO USA website today!

When starting up, the power supply may draw 20Amps. Older power supplies with transformers, rectifiers, and capacitors used to have high inrush currents, but modern switched mode power supplies do not. It is important to follow the manufacturer's recommendations for circuit protection. Although the Wago manual may not provide specific information on input side protection, it does mention a typical current of 0.6A and an inrush current of up to 10A. The PSU has short-circuit protection on the output side, so protection against short circuits from the 110V power supply to the PSU is necessary. In summary, a 2A type C circuit breaker should be chosen for protection.

According to Scottryan03, the information was available on the website but was not included in the manual. Click here to find out more.

I appreciate the share! I'm certainly in the market for a reliable PSU, and this model seems to tick all the right boxes. It's crucial, indeed, to remember that choosing the right circuit breaker is integral to the safety and longevity of the power supply, and the linked datasheet made that very clear. I'll definitely give this one further consideration. Thanks again for the detailed and useful information!

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Frequently Asked Questions (FAQ)

FAQ: What are the recommended input and output specifications for a power supply that can handle 120 volts on the input and has a 1.25 amp 24 dc output?

Answer: A power supply with 120 volts input and a 1.25 amp 24 dc output is suitable for the mentioned requirements.

FAQ: How can I properly size a breaker to protect the input side of a power supply?

Answer: To properly size a breaker for a power supply, consider the specifications of the power supply and ensure it meets the necessary requirements.

FAQ: Where can I find more information about selecting and protecting a power supply?

Answer: For more information on selecting and protecting a power supply, consult the product datasheet provided at this link: https://cdn.automationdirect.com/static/specs/cutsheet/2687-2142_cutsheet.pdf.

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