A2S1ASQ12VDC1.9

Relay Automotive Overview

The A2S1ASQ12VDC1.9 is a chassis-mount automotive relay manufactured by CIT Relay and Switch. It features an SPST-NO (Form A) contact arrangement with a rated coil voltage of 12VDC. The component supports a maximum switching current of 40A at 14VDC, delivering up to 630W of switching power. Designed for compact applications, it offers PCB pin and quick connect mounting options. The unit complies with RoHS standards and measures approximately 26.0 x 26.0 x 24.5 mm.

Relay Automotive Feature Summary

• Large switching capacity up to 40A
• Small size and light weight design
• PCB pin and quick connect mounting available

Relay Automotive Applications

• Automotive electrical systems
• Lamp accessories control
• General purpose high-current switching

Relay Automotive Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct coil voltage and contact configuration. Confirm RoHS compliance status if required for your assembly. Check for any recent updates to the datasheet regarding dimensional tolerances or thermal ratings before finalizing procurement specifications.

Relay Automotive Selection Notes

Select this model when a single-pole normally-open circuit requires high current handling in a compact form factor. Ensure the application voltage aligns with the 12VDC coil rating and that the load does not exceed the 40A @ 14VDC limit. Consider the chassis mount style for integration into existing relay panels or harnesses requiring quick connection capabilities.

Relay Automotive Part Context

This component belongs to the CIT A2 series of automotive relays, designed for robust performance in vehicle environments. The A2S1ASQ variant specifically denotes the SPST-NO configuration within this family. These relays are certified under QS-9000 and ISO-9002 manufacturing standards, ensuring consistent quality for automotive and accessory applications.

Relay Automotive Replacement Considerations

Direct substitutes include variants with different coil voltages such as A2S1ASQ12VDC1.6 or A2S1ASQ24VDC1.9, provided the system voltage matches. Ensure the replacement maintains the SPST-NO contact arrangement and identical mounting footprint for seamless integration without modifying the PCB or wiring harness.