DAR70505PU is a UL-approved, normally open high-voltage relay from the DA(UL) series designed for high-reliability applications requiring excellent isolation and switching performance. The relay features 5kV isolation voltage across contacts with a 5V DC coil voltage, utilizing high vacuum reed switches with rhodium contact material for low contact resistance. It offers a must-operate voltage of 3.7V and must-release voltage of 0.5V, with operate and release times of 3.0 ms and 2.0 ms respectively (with diode fitted). The relay can switch up to 1000V DC or AC peak with a maximum switching current of 3A and carry current of 4A, delivering maximum switching power of 50W. With contact resistance of 50 mO (typical 15 mO) and insulation resistance of 10¹° O, this relay is ideal for cardiac defibrillators, test equipment, high-voltage power supplies, and other demanding applications requiring high isolation and reliability.