Datasheet DK (Panasonic) - 8

Power Relays ( Over 2 A ) DK RELAYS INSULATION CHARACTERISTICS ( IEC61810-1 ) Item Characteristics Clearance/Creepage distance ( IEC61810-1 ) Min. 5.5/5.5 mm Category of protection ( IEC61810-1 ) RT III Tracking resistance ( IEC60112 ) PTI 175 Insulation material group III a Over voltage category III Rated voltage 250 V Pollution degree 2 Type of insulation ( Between contact and coil ) Reinforced insulation Type of insulation ( Between open contacts ) Micro disconnection Note) EN/IEC VDE Approved. GUIDELINES FOR USAGE ■ For cautions for use, please read " GUIDELINES FOR RELAY USAGE ". https://industry.panasonic.com/global/en/products/control/relay/cautions_use ■ Cautions for usage of DK relays Please use our products in the conditions described in our • When switching loads that cause contact spark specification sheets and catalog. discharge at high frequencies, the resulting spark Panasonic Industry Co., Ltd. does not guarantee any energy may synthesize HNO3 which causes contact failure caused by the usage in the conditions beyond the corrosion. specification sheets and catalog. To prevent this, take one or more of the following ● Please visit our Automation Controls Products web site actions: and refer to the caution for use and the explanations 1. Use a spark suppressor across the contacts. of technical terms. 2. Reduce the operation frequency. ● Please check the internal connection diagram in the 3. Reduce the ambient humidity. catalog or specification, and connect the terminals • When " Dry-switching " without current conduction is correctly. If any wrong connection is made, it may used, please contact us. cause circuit damage by unexpected malfunction, abnormal heat, fire, and so on. Note) Dry-switching ● When the voltage is applied to the relay coil exceeding Dry-switching can reduce the consumption of contact ±5 % range of the rated voltage, relay operation material without current conduction. On the other hand, cannot be assured. as the contact cleaning effect disappears, conduction Additionally the ambient temperature and condition failure may occur. This dry-switching condition is not of the application should be considered under the recommended in applying our relay. worst condition of the actual usage because they may change the relay operate ( set ) and release ( reset ) ● The specification value of lifetime, surge withstand voltage. voltage, insulation resistance, vibration resistance * It is not allowed to apply the continuous maximum voltage to the coil. In order to obtain the specified performance, please apply the rated and shock resistance are obtained from the relay voltage. independent test conducted under the standard test ● The rated voltage ripple factor should be max. 5 %. condition range of JIS C 5442 ( *1 ) ( Temperature When ripple current increases, the relay performance 15 ∼ 35 ℃, humidity 25 ∼ 75 % RH ) based on our may be adversely affected, for example, the operation company test level ( Confidence level of 60 %, sound may increase. confidence level of 80 % or higher ), if specific The change of ambient temperature and condition conditions are not mentioned. affect the relay performance, please evaluate in the ● Panasonic Industry Co., Ltd does not guarantee the worst condition of the actual usage. suitability of our relay for user application. ● Lifetime is dependent on the coil driving circuit, load In order to enhance the reliability of actual usage, type, operation frequency, on/off phase and ambient please evaluate the relay under the actual worst conditions. conditions, and please judge the suitability for user Please check lifetime under the actual condition. application and whether the relay can be used. The following load conditions may reduce lifetime: Please use our relay with sufficient margin for the • If the on/off phase is synchronized with the AC load, performance, and carry out safety design such as contact lockup or welding may occur due to the redundant design, fire prevention design, malfunction material transfer of contact. prevention design and etc. In addition, periodic maintenance should be required. Panasonic Industry Co., Ltd. Electromechanical Control Business Division industry.panasonic.com Panasonic Industry Co., Ltd. 2025 ASCTB177E 202507 ー 7 ー