A2S1ASQ12VDC1.6D

Relay Automotive Overview

The A2S1ASQ12VDC1.6D is an automotive relay manufactured by CIT Relay and Switch, designed for high-current switching applications in vehicle electrical systems. It features a single-pole single-throw normally open (SPST-NO) contact arrangement with a rated current of 40A at 14VDC. The coil operates on 12VDC with a resistance of 90 Ohms and consumes 1.6W of power. The unit utilizes quick-connect terminals measuring 0.250 inches (6.3mm) for mounting and includes a built-in suppression diode. It is fully sealed to protect against environmental factors and certified compliant with RoHS3 standards.

Relay Automotive Feature Summary

• Fully sealed construction provides protection against moisture and contaminants for reliable operation in harsh automotive environments.
• Integrated suppression diode protects control circuits from voltage spikes generated during coil de-energization.
• Quick-connect terminal style facilitates rapid installation and secure electrical connections on standard relay bases.

Relay Automotive Applications

• Automotive lighting circuits
• High-power accessory control modules
• Vehicle heating and ventilation systems

Relay Automotive Procurement Notes

Verify the specific suffix 'D' indicates the inclusion of the internal suppression diode, as this distinguishes it from non-diode variants within the same series. Confirm that the 12VDC coil voltage aligns with the target vehicle's electrical architecture. Ensure the quick-connect pin dimensions match the receiving harness or socket specifications to guarantee physical compatibility.

Relay Automotive Selection Notes

Select this component when a robust, sealed automotive relay is required for loads up to 40A. The SPST-NO configuration is suitable for simple on/off control tasks. Consider the 1.6W coil power consumption for low-drain battery applications. The sealed design makes it appropriate for under-hood or exposed locations where environmental sealing is critical compared to open-frame alternatives.

Relay Automotive Part Context

This part belongs to the CIT A2 series of automotive relays, which are engineered for heavy-duty switching in transportation sectors. The A2 series is characterized by its compact form factor combined with high current carrying capacity. The manufacturer holds QS-9000 and ISO-9002 certifications, indicating adherence to strict quality management standards for automotive supply chain components.

Relay Automotive Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference availability through official CIT catalogs or authorized distributor databases before replacing existing inventory.