Q&A(FAQ) What is IEC60335-1?
1. Safety Standard IEC60335-1
IEC 60335-1:2010 deals with the safety of electrical appliances for household and similar use.
COSEL products are designed in accordance with the IEC 62368-1 safety standard.
Table 1 shows a comparison of the safety requirements between IEC 60335-1 and IEC 62368-1.
| # | Safety standard | IEC62368-1 | IEC60335-1 (AC 100V class) |
IEC60335-1 (AC 200V class) |
|
|---|---|---|---|---|---|
| Over voltage category | Ⅱ | Ⅱ | Ⅱ | ||
| 1 | Isolation voltage *1 |
Input - Output | 3,000 | 1,000 | 2.4×U+2400 |
| Input - FG | 1,500 | 2,000 | 1.2×U+950 | ||
| Output - FG | (500) | - | - | ||
| 2 | Creepage (Basic isolation/Reinforced isolation) |
200-250V *2 | 2.5/5.0 | 2.5/5.0 | 2.5/5.0 |
| 250-300V *2 | 3.2/6.4 | 4.0/8.0 | 4.0/8.0 | ||
| 300-400V *2 | 4.0/8.0 | 4.0/8.0 | 4.0/8.0 | ||
| 3 | Clearance (Basic isolation/Reinforced isolation) |
150-250V *3 | 2.0/4.0 | 2.0/3.5 | 2.0/3.5 |
| 250-300V *3 | 2.0/4.0 | 2.0/3.5 | 2.0/3.5 | ||
| 300-400V *3 | 3.2/6.4 | - | - | ||
| 4 | Leakage current | Hand-held | 0.75mA | - | - |
| Movable | 3.5mA | - | - | ||
| Stationary | 3.5mA | - | - | ||
| Portable class I appliances | - | 0.75mA | 0.75mA | ||
| Stationary class I motor-operated appliances | - | 3.5mA | 3.5mA | ||
| 5 | Maximum temperature (Wire) | Type A | Less than 90°C | - | - |
| Type E | Less than 105°C | - | - | ||
| Type B | Less than 110°C | - | - | ||
| 6 | Temperature increasing (Wire) | Type A | - | Less than 65deg | Less than 65deg |
| Type E | - | Less than 80deg | Less than 80deg | ||
| Type B | - | Less than 85deg | Less than 85deg | ||
- *1:(U) Maximum working voltage
- *2:Working voltage
- *3:Working voltage in IEC62368-1, and rated input voltage in IEC60335
2. IEC60335-1 compliance
(1) Creepage
The creepage distance requirements in IEC 60335-1 are stricter than those in IEC 62368-1 in certain areas.
(2) Temperature of wire
Unlike IEC 62368-1, which specifies absolute maximum temperatures, IEC 60335-1 defines temperature limits based on the temperature rise above a reference ambient temperature of 25°C.
(3) Grounding capacitor
Compared with IEC 62368-1, IEC 60335-1 requires the use of two or more Y1-class capacitors, even if they are Y1 rated. In contrast, COSEL products are generally designed with a single Y1-class capacitor.
(4) Safety approval
The required creepage distance and wire temperature ratings vary depending on the product. In general, COSEL products are approved according to IEC 62368-1, and additional requirements—such as critical component management and other supplementary measures—are necessary to obtain IEC 60335-1 certification.
For details regarding approval possibilities, please contact us.
* The contents of this page are subject to change. Please refer to the latest applicable standards and regulations before use.