A21ACQ12VDC1.6

Relay Automotive Overview

The A21ACQ12VDC1.6 is a single-pole, normally open (SPST-NO) automotive electromechanical relay manufactured by CIT Relay and Switch. It features a 12VDC coil with a resistance of 90 Ohms and a power consumption of 1.6W. The switch contacts are rated for a maximum current of 40A at up to 75VDC. Designed for base mounting, the unit utilizes quick-connect terminals measuring 0.250 inches (6.3mm). The device operates within a temperature range of -40°C to 125°C and employs silver tin oxide contact material.

Relay Automotive Feature Summary

• High switching capacity supporting up to 40A contact current
• Compact physical dimensions suitable for space-constrained automotive applications
• Sealed construction providing environmental protection
• Dual mounting options including PCB pins and quick-connect terminals

Relay Automotive Applications

• Automotive electrical systems
• Vehicle lamp accessories
• General purpose switching in automotive environments

Relay Automotive Procurement Notes

Verify that the specific part number matches the required coil voltage and contact configuration before ordering. Confirm that the quick-connect terminal style aligns with existing harness connectors. Ensure the operating temperature range meets the requirements of the intended installation environment. Check for RoHS compliance status if restricted substances are a concern for the project specifications.

Relay Automotive Selection Notes

Select this component when a high-current automotive relay is required for low-voltage DC circuits. The SPST-NO configuration is appropriate for simple on/off control tasks. Consider the 12VDC coil specification to ensure compatibility with standard vehicle electrical architectures. Evaluate the sealed design benefits against the specific environmental exposure levels of the target application area.

Relay Automotive Part Context

This relay belongs to the A2 series from CIT Relay and Switch, which focuses on automotive-grade components. The series is characterized by robust switching capabilities and compact form factors. CIT manufactures these devices to meet quality standards such as QS-9000 and ISO-9002, ensuring reliability for automotive and industrial use cases requiring durable electromechanical switching solutions.

Relay Automotive Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.