Technical FAQs 4

Should I use a Class 2 power supply?

One advantage of using a Class 2 power supply is that if you have any devices that are not UL Approved and these devices are connected to a Class 2 source, UL typically does not require additional testing. PULS has one of the largest selections of NEC Class 2 power supplies and other DC power solutions.

Can a power supply be 100% loaded?

Power supplies that comply with 61010-2-201 can be 100% loaded, eliminating the need for 50% derating. Power supplies compliant with the 61010 standard and servicing NEC class 2 circuits must also satisfy NEC Class 2 requirements.

Do you need a safety report for a power supply?

When integrating power supplies into a system, reviewing the safety reports and certifications is a must. Certifications like the CB report (IEC 60950-1) provide vital details on a power supply’s compliance with international safety standards. These reports often include key information such as:

Are power supplies NEC 61010 compliant?

Power supplies compliant with the 61010 standard and servicing NEC class 2 circuits must also satisfy NEC Class 2 requirements. NEC Class 2 compliance limits the maximum output power of power supplies to 200 W — and of course, total power out is a function of current and voltage.

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