The LP1K09004BDTQ is a TeSys K 4-pole contactor from Schneider Electric, rated 20 A in AC-1 utilisation category at 440 V. AC-1 covers resistive or lightly inductive loads — heaters, lighting banks, transformer primaries — where the switching arc is easier on the contacts than motor starting.
DC-13 solenoid load endurance
For DC-13 duty — switching solenoids, brakes, or clutches on a 24 V DC line — the contactor is rated 120 W at 1 million cycles, 55 W at 3 million cycles, and 15 W at 10 million cycles. That matters when you're cycling a valve or brake frequently: pick the power level that matches your expected service life, because the arc on DC inductive loads wears the contacts faster than AC resistive switching.