Class 2 Transformers
A Class 2 transformer is one that delivers 100VA or less with a maximum output voltage of 30VAC or less. They are used in applications ranging from air conditioning thermostats, garage door openers, sprinkler system controls, digital controllers, gas controls, ignition systems, motor actuators, staging controls, the food and beverage industry and most other Heating, Ventilation, Air Conditioning, and Refrigeration (HVACR) control systems.
Class 2 transformers are known as low voltage transformers because they are designed to produce a low voltage output, typically under 30 volts, with limited power, making it safer to use in applications where reducing the risk of electric shock is crucial, like control circuits, doorbells, and low-voltage lighting systems; essentially, it provides a low-power, low-voltage supply to a “Class 2 circuit” as defined by electrical safety standards.
Their low voltage output means they are considered safer than other transformers because the low secondary voltage reduces an electrical shock hazard, and the low power output reduces a fire hazard. The current is also limited either by a fuse or by the internal impedance of the SEC winding (known as inherently limited).
Class 2 Transformers Specifications
Frequently Asked Questions.
What is the difference between a transformer and a Class 2 transformer?
Article 725 of NEC and UL guidelines indicate that an output of a transformer is Class 2 when it has inherently limited output voltage and output power. Class 2 transformers typically radiate 30V AC or less and not greater than 100 VA. This reduces the potential risk of fire and electrical shock and does not require additional over current safety. The quantity of power at hand is the primary change. Yes, if it has the right rating. Encapsulated Class 2 transformer made of sealed epoxy are great for use outside or in tough conditions. CET Technology sells sealed Class 2 transformers that can handle dust, water, and pressure.
Its main business is making UL-listed, high-quality Class 2 transformer that are safe, reliable, and work well for a long time.
Are Class 2 transformers fitted with fuses or circuit breakers on the secondary?
How does Class 2 and Class 3 differ?
The Class 2 transformer are very restrictive in the amount of power they radiate so as to make things safer and reduce the chances of catching fire.
Class 3 transformers are capable of larger power, though may require varied wiring and over current protection.
Class 2 transformers tend to be more appropriate in cases where human beings will be handling them frequently.
Is it possible to use a Class 2 transformer outside?
Why choose CET Technology for Class 2 transformers?
CET Technology helps OEMs, HVAC manufacturers, and system designers with reliable power solutions. They are experts in encapsulated and industrial-grade designs.