Skip to content
| ZGSM
  • Home
  • About usExpand
    • Company Profile
    • Warranty term
    • Blogs
    • News
    • Privacy Policy
  • ProductsExpand
    • LED Street Light

      Solar Street Light

      Led Flood Light

      Solar Flood Light

      LED High Bay Light

      High Mast Light

      red green yellow LED Traffic Light

      LED Traffic Light

      tunnel lights

      LED Tunnel Light

      LED Garden Light

      LED Canopy Light

      Led Bollard Light

      adapter

      Lighting Accessories

  • SolutionExpand
    • Smart Systems

      Smart Systems

      Simulation Design

      Smart Financing

      Smart Financing

  • Applications
  • Case Studies
  • Videos
  • Contact
  • ENExpand
    • FR
    • ES
    • RU
| ZGSM

Class I vs Class II vs Class III, or Class 1 vs Class 2

Class I vs Class II vs Class III, or Class 1 vs Class 2

table of Contents
  1. What is the LED Driver?
  2. What Are Class I, Class II, and Class III?
    1. What's Class I?
    2. What's Class II?
    3. What's Class III?
  3. Video of Appliance Protection Classes 0, I, II, III
  4. What are Class 1 and Class 2?
    1. What's UL 1310?
    2. What's Class 1?
    3. What's Class 2?
  5. What is Class 1 Material?
  6. What is Class 2 Material?
  7. Brief summary
  8. Conclusion
  9. Rated Products
  10. Related Blogs
  11. Related Cases
  12. People also ask
  13. Author introduction

In LED lighting systems, LED drivers play a key role in the proper functioning and performance of the system. This is an electronic device that regulates the power and current of an LED lighting system. Because of this, it is important to select LED lamps with the right LED drivers to ensure safety in lighting projects. If you are an industry practitioner, you will often hear about Class I, Class II, Class 1 and Class 2 requirements for products. However, how much do you know about the differences between Class I, Class II, Class 1, and Class 2 product ( LED light and LED drivers ) in the lighting industry ( Discover our LED lighting project showcases. ) ? If you don’t know, you may be missing out on some critical information that can impact the safety and performance of your lighting system. This article will show you the difference between Class I vs Class II vs Class III vs Class 1 vs Class 2.

What is the LED Driver?

LED drivers are also called LED power supplies ( Explore ZGSM’s high-quality professional LED drivers. ). They have similar functions to fluorescent lamp ballasts. As one of the important components of LED lamps, LED drivers can convert standard alternating current (AC) power (such as household or commercial electricity) into direct current (DC) power, because LED lamp beads need DC power to drive and light up. High-quality drivers will accurately control the output current, and stable current can ensure the consistency and stability of LED light emission. In LED lamps, LED drivers usually have dimming functions to meet their intelligent dimming needs by changing the output current.

LED drivers can also protect LEDs from damage because the drivers have built-in protection mechanisms such as overcurrent protection, overvoltage protection, short circuit protection, and overheating protection, thereby extending the service life of the lamp. In addition, LED drivers can be divided into different electrical grade types such as Class I, Class II, and Class III according to the differences in anti-electric shock protection measures. The electrical grade type of LED drivers is related to the possibility of dangerous contact voltages in the unpowered parts of the entire product. 

What Are Class I, Class II, and Class III?

Class Types for appliances consider the insulation system of the product. It specifies measures to prevent dangerous contact voltages on unenergized parts of the electronic device. According to the measures, it can be divided into four Class, Class 0, Class I, Class II, and Class III. We here mainly discuss I, II, and III.

What’s Class I?

Class I LED lights have basic insulation and must incorporate a protective earth connection to mitigate the risk of electric shock. The safety of them is achieved by using basic insulation and also providing a means of connecting to the protective earth conductor in the building where by routing those conductive parts that are otherwise capable of assuming hazardous voltages to earth ground if the basic insulation fails. This means a class I LED light will provide a terminal/pin for earth ground connection.

What’s Class II?

Class II LED lights not only rely on basic insulation to prevent electric shock protection but also must provide additional safety protection measures such as double insulation or reinforced insulation. There is no reliance on either protective earth or installation conditions. This means a class II LED light does not have a terminal/pin for earth ground connection.

To get Class II certificated LED lights, we must install Class II certificated LED drivers. Below is the picture of a Class II driver with the “回” symbol. Furthermore, we should use two layers of insulating material between live parts and the user, or use reinforced insulation so that no dangerous voltage will become exposed which might cause an electric shock. Now ZGSM has many series street lights that are class II certificated, for example, H series, K series, and Rifle series.

Class I vs Class II vs Class III vs Class 1 vs Class 2
Class II symbol

What’s Class III?

Class III LED light is defined as that protection against electric shock depends on the absence of a voltage above safety extra-low voltage (SELV). SELV is defined in the relevant standards as the voltage not exceeding 25VAC or 60VDC. So the extra safety features built into Class I and Class II LED lights are therefore not required for Class III LED lights. For example, ZGSM solar or DC input street lights are Class III classified.

For more information about Key Factors to Consider in the Street Lighting Design,you can read our related article “Key Factors to Consider in the Street Lighting Design”.

Video of Appliance Protection Classes 0, I, II, III

Video from Youtube about appliance Protection Classes 0, I, II, III

What are Class 1 and Class 2?

Class 1 and Class 2 come from UL 1310 standard. UL1310 (NEC Class 2 Power Units) are product safety standards that aim to keep humans safe by lowering the possibility of a hazardous situation.

What’s UL 1310?

The UL 1310, Class 2 Power Units, standard applies to power supplies within a limited output current and output voltage range. The Class 2 standard is specified in UL Standard Number UL1310.

What’s Class 1?

Class 1 products have output ranges outside UL Class 2 designations. An LED Driver with a UL Class 1 rating has a high-voltage output and safety protection is required within the fixture (LED light).

What’s Class 2?

Class 2 product is with an electronic circuit whose output current and power are under the limitation shown in UL1310 Table as below. They operate using less than 60 volts in dry applications, 30 volts in wet applications, less than 5 amps, and less than 100 watts. So the risk of fire can be reduced significantly. And the safety distances and flammability rating of components can be much lower.

Circuit voltage (Vmax ) a,b ac or dc Volts Maximum nameplate ratings Maximum output current (Imax )c, Amperes
Volt-Amperes Amperes
0 – 20 5.0 X Vmax 5 8
Over 20 to 30 100 100/Vmax 8
Over 30 to 60, dc only 100 100/Vmax 150/Vmax
Class 2 symbol

What is Class 1 Material?

Class 1 material is a designation of the RWMA. The Resistance Welding Manufacturers Alliance (RWMA) is an organization of leading manufacturers of resistance welding equipment and materials. The alliance was established to promote the use of resistance welding and to provide technical expertise.

Class 1 is often used to weld aluminum and other good conductors like brasses and bronzes which require high weld currents.

What is Class 2 Material?

Class 2 material is a designation of the RWMA. Class 2 is the most used material in the resistance welding industry. As electrodes it is used for welding bare and coated steels.

Brief summary

In brief, the table below shows the difference between Class I, Class II, Class III, Class1, and Class2.

ClassifyClass IClass IIClass IIIClass1Class2
AuthorityIECIECIECNECNEC
InsulationBasic insulationDouble Insulated/Electrical limitationElectrical limitation
Symbol CLASS I-2 CLASS II-3 CLASS III-1 ULUL
Characteristicthree-wire power cordtwo-wire power cordSolar or others with extra-low voltagePower≤1000 Volt-AmpsVoltage≤60(Dry)

Conclusion

We will find that Class I, Class II, or Class III has no connection with Class 1 or Class 2. There are two standards for electrical equipment. In the market, LED light can be with Class II standard, but it’s not with Class 2 LED driver. However, Class II certificated LED light must be with Class II LED driver. Meantime, an LED light with a Class II LED driver doesn’t mean that it’s Class II certificated. You have to check whether the product is with two layers of insulating material or reinforced insulation between live parts and the user. It’s important when we are applying for Class II certificates.

With the above clarification, We believe that you have a good understanding of Class I/II/III and Class 1/2. Hope this will help you find suitable LED products that you need.

Rated Products

commercial street lights

Series Kmini Smooth Body Street Light Led

street lighting led

Series Nova Competitive Led Road Light

Road Lamp

Series H EVO Modular Design Road Lamp

hanging street lights

Series L Flexible Mounted Hanging Street Lights

ATEX approved LED Flood Light

Series Primo ATEX approved LED Flood Light

led high bay lights 200w

Series H Modular Design High Bay Led Light

led street light with enec+

Series Rifle Class I/II Street Lamp

residential led street lights

Series Kmini2 Eco But Quality Ensured Led Light Street

Related Blogs

ik rating

IK rating-important factor of LED light

TagsIK

What are the common quality problems of LED street light?

TagsLED Street Light
street light with photocell

11 Things You Need Know About LED Street Light with Photocell

TagsLED Street Light
street light cost

How much does a street light cost?

TagsLED Street Light
smart control street light

Some Things about Street Light Control System

TagsLED Street Light
things about led street light

Several things you need to know about LED Street Light

TagsLED Street Light

How Long do Led Lights Last ?

TagsLifetime
something about leds

Something you should know about LEDs

TagsLEDs

Advantages and Disadvantages of Solar Power and Solar Street Lights

TagsSolar Street Light
road lighting design

Key Factors to Consider in the Street Lighting Design

TagsStreet Lighting

Related Cases

cobra head led street light in a garden in Czech republic

Series K cobra head led street light in a garden in Czech republic

decorative street lighting fixtures

Series K motion sensor led street light on a mountain road in Norway

smart street light in a zoo park in Slovakia

Series K smart street light in a zoo park in Slovakia

Street Light Fixture In Urban Roads in COLOMBIA 6

Series H Street Light Fixture In Urban Roads in COLOMBIA

high street light

Series H Residential Street Lights In Urban Street in Mocoa of COLOMBIA

led street light 90 watt

Series H led streetlight and Urban Lights In Talca and Contulmo of Chile

Streetlight Led

Series H Streetlight Led On The Seaside Urban Road In Qingdao of China

Residential Led Street Lights

Series H Residential Led Street Lights On Community Road In Malaysia

led street light price

Series H Led Roadway Light On a City road in Iraq

street light led 100w in Raub of Malaysia

Series H street light led 100w in Raub of Malaysia

People also ask

LED drivers are devices that regulate the power to LED light sources. They are classified according to UL safety and performance standards. Two of these classifications are UL Class 1 and UL Class 2, with UL Class 1 drivers having outputs that extend beyond UL Class 2 drivers. They have high voltage outputs and require safety protection within the luminaire. UL Class 2 drivers meet the UL1310 standard, which means their outputs are considered safe to touch and no significant safety protection is required at the LED/luminaire level.

Understandably, there is sometimes misunderstanding about the distinction between Class 2 and Class II rated ac-dc power supply. The distinctions are crucial and must be understood. The NEC (National Electric Code) designation of Class 2 relates to the output voltage and power capabilities of ac-dc supplies, while the IEC (International Electrotechnical Commission) protection designator, Class II, refers to the internal architecture and electrical insulation of a power supply.

IEC Class I input models have basic insulation and must incorporate a protective earth (ground) connection to mitigate the risk of electric shock.
IEC Class II input models feature additional safety precautions such as double insulation or reinforced insulation, thereby eliminating the need for a protective earth (ground) connection. Therefore, Class II input power supplies have a 2-pin input receptacle [IEC60320 C8 or C18 type] instead of the 3-pin input receptacles found on Class I input models.

Author introduction

About the author
Author

Hello Customers,

My name is Taylor Gong, I’m the product manager of ZGSM Tech. I have been in the LED lights industry for more than 13 years. Good at lighting design, street light system configuration, and bidding technology support. Feel free to contact us. I’m happy to provide you with the best service and products.

Email: [email protected] | WhatsApp: +8615068758483

  • Mail
  • Facebook
  • Twitter
  • YouTube
  • Instagram
  • LinkedIn
  • Pinterest


Post Tags: #Class rating

Get In Touch

We're always excited about your message,
so feel free to get in touch, we will reply to you ASAP.

Category

LED Street Light
LED Flood Light
LED High Bay Light
LED Canopy Light
LED Garden Light
Solar Street Light
High Mast Light
LED Traffic Light
Lighting Accessories

Don't Want to Miss Anything?

Be the first to get updates and information about products and services.

  • Facebook
  • Twitter
  • Instagram
  • YouTube

© 2005 - 2025 · ZGSM Tech Warranty Terms | Privacy

Language Selection ES | FR | RU

  • Home
  • About us
    • Company Profile
    • Warranty term
    • Blogs
    • News
    • Privacy Policy
  • Products
    • LED Street Light

      Solar Street Light

      Led Flood Light

      Solar Flood Light

      LED High Bay Light

      High Mast Light

      red green yellow LED Traffic Light

      LED Traffic Light

      tunnel lights

      LED Tunnel Light

      LED Garden Light

      LED Canopy Light

      Led Bollard Light

      adapter

      Lighting Accessories

  • Solution
    • Smart Systems

      Smart Systems

      Simulation Design

      Smart Financing

      Smart Financing

  • Applications
  • Case Studies
  • Videos
  • Contact
Search