Ferol 2.5mm

Description

Songle JD1912 4-Pin Automotive Power Relay (DC 12V Variant) The Songle JD1912 12V is a heavy-duty, industry-standard Bosch-style automotive relay engineered for high-current circuit isolation, power distribution, and accessory switching. Utilizing a standard 4-pin spade terminal layout, this SPST-NO (Single Pole Single Throw – Normally Open) relay uses a 12V DC control coil to safely close a single, massive current pathway, making it a foundational component in vehicular electrical systems. Key Features Contact Configuration: SPST-NO (1 Form A: 1 Normally Open contact line). Coil Voltage: 12V DC (Direct Current), perfectly matching standard automotive, marine, and power-sport 12V battery networks. High Switching Capacity: Built to comfortably handle heavy electrical draws and starting current spikes, typically rated for 30A to 40A at 14V DC. 4-Pin Pinout Layout (Standard Bosch Numbering): Pins 85 & 86: Solenoid Coil Input (Trigger Circuit). Pin 30: High-Amperage Power Feed Input (COM). Pin 87: High-Amperage Power Output (NO — connects to Pin 30 only when the coil is energized). Architecture: Durable, vibration-resistant black plastic casing designed to withstand the harsh thermal and physical environments of an engine bay. Compatibility Guide The JD1912 series acts as a heavy-duty electrical gatekeeper, allowing low-amperage switches to control high-wattage components without risk of melting. 1. Compatible Trigger Inputs Because this relay features a 12V DC coil, it integrates seamlessly with standard vehicle accessory lines: Dashboard Toggle Switches: Connects to low-current rocker, toggle, or push-button switches mounted on a dashboard or control panel. Ignition / ACC Circuits: Slices into the vehicle’s accessory wire loom to ensure auxiliary gear power is automatically cut off when the ignition key is removed. Automotive Control Modules: Can be triggered by security systems, remote starters, or central locking output pulses. 2. Compatible Mounting Sockets To guarantee tight connections that won’t slip loose under heavy vehicle vibration, this relay is designed to drop into standard automotive harnesses: 4-Wire Interlocking Relay Sockets: Matching automotive socket blocks equipped with thick, pre-wired leads (typically 12 AWG for the load lines on pins 30/87, and 16 AWG for the control pins 85/86). These sockets feature side slots so multiple units can be clipped together into a clean, modular panel row. 3. Common Applications High-Draw Lighting Kits: Manages the heavy current demands of off-road LED light bars, high-intensity spot fog lights, and auxiliary driving lights. Electric Fans & Pumps: Supplies direct, uninhibited battery current to electric radiator cooling fans, high-pressure aftermarket fuel pumps, and water pumps. Power Distribution Blocks: Serves as a master ignition-switched relay to turn on entire auxiliary fuse blocks powering multiple secondary accessories simultaneously.