What is a Class 2 power supply used for?
Class 2 is a classification referring to the NEC – National Electric Code. To avoid potential cable overheating due to excessive currents and electric shock, the output of the power supply is limited to 60VDC or 100VA, (100W when used with an AC-DC power supply).
What are Class 2 and 3 transformers?
Class 2 power circuits are limited and do not pose fire initiation risk while providing an acceptable level of protection from electrical shock. Class 3 circuits are limited in output power however, they can and do operate at higher voltage levels and, therefore, can present a shock hazard.
What is a Class 1 transformer?
Class 1 power-limited circuits have a current limiter on the power source that supplies them. This limiter is an OCPD that restricts the amount of supply current on the circuit in the event of an overload, short circuit, or ground-fault. A transformer or other type of power supply supplies power to Class 1 circuits.
What is a Class 2 plug in transformer?
This series of transformers have built-in thermal protection and are UL-Recognized, Class 2. They are used in a wide range of applications in CCTV, access, and security systems – supplying low-voltage AC, or as part of a DC power system.
What is the difference between Class 2 and Class 3?
Class 2 is for dedicated service electronic products. “Class 3 includes products where continued high performance or performance-on-demand is critical, product downtime cannot be tolerated, end-use environment may be uncommonly harsh, and the product must function when required.”
What is a plug-in transformer?
A Plug-in Transformer is like a plug you would use for your laptop or your cell phone. It has a “wall wart” transformer that plugs into a standard power outlet and takes the 110V power coming from the wall and transforms it down to the 12V DC needed by the motor.