The 4-1904124-4 is a high-current plug-in automotive relay designed for demanding applications. It features a 1 Form A, normally open contact configuration with a rated voltage of 12VDC and a maximum switching voltage of 16VDC. This relay is capable of handling a limiting continuous current of 30A at 85°C and operates over a wide ambient temperature range of -40°C to +125°C. The device includes an integrated 1000Ω coil suppression resistor and silver alloy contacts, ensuring high mechanical endurance of over one million operations. It is ideal for controlling systems such as horns, wipers, water pumps, fuel pumps, and lighting in automotive environments.