BP493C is a latching relay designed for high-current switching applications. It features a mains current rating of 285 A at 115/200 V mains voltage, with a 3PST NO (three-pole single-throw normally open) main configuration and 6PST NC / 5PST NO auxiliary configuration. The relay operates in latching mode, maintaining its state without continuous coil power, and is energized by a coil voltage range of 15–37.5 V. The relay employs a GV type seal for environmental protection and operates continuously (CONT duty cycle). This configuration makes it suitable for industrial control systems, power distribution switching, and applications requiring reliable high-current switching with memory retention.