A21ASP24VDC1.6R

Relay Automotive Overview

The A21ASP24VDC1.6R is an active automotive relay from the CIT Relay and Switch A2 series, featuring a non-latching coil design with a rated voltage of 24VDC. It utilizes a single-pole single-throw normally open (SPST-NO) contact configuration capable of switching up to 40A at 14VDC. The unit operates with a coil current of 66.7 mA and includes PCB pin and quick connect mounting options. Its compact dimensions are 26.0 x 26.0 x 24.5 mm, ensuring suitability for space-constrained automotive applications while maintaining high switching capacity.

Relay Automotive Feature Summary

• Large switching capacity supporting up to 40A loads
• Compact physical footprint with lightweight construction
• Flexible mounting via PCB pins or quick connect terminals

Relay Automotive Applications

• Automotive electrical systems
• Lamp control circuits
• DC motor control applications

Relay Automotive Procurement Notes

Verify the specific ordering suffix against official CIT documentation to confirm exact coil characteristics and contact arrangement. Ensure compatibility with existing harnesses and sockets, such as the HD-1002 relay socket, for proper installation. Confirm that the 24VDC coil rating aligns with the target vehicle's electrical architecture before procurement.

Relay Automotive Selection Notes

Select this model when a 24VDC coil voltage is required for automotive circuits. The SPST-NO configuration is appropriate for simple on/off load control. Consider the 40A current rating for high-power accessories. Verify that the non-latching behavior meets system requirements compared to latching alternatives in the same series.

Relay Automotive Part Context

This component belongs to the CIT A2 series of automotive relays, designed for robust performance in vehicle environments. The series offers various contact forms and coil voltages to accommodate diverse automotive needs. CIT manufactures these units under ISO-9002 certified processes, emphasizing quality and reliability for both primary design and second sourcing strategies.

Relay Automotive Replacement Considerations

Compatible substitutes within the A2 series include variants with different coil voltages or contact arrangements, such as A21CSQ24VDC1.6R for SPDT configurations. Ensure any replacement maintains the 24VDC coil requirement and fits the standard ISO housing dimensions.