A21CCQ12VDC1.9R

Relay Automotive Overview

The A21CCQ12VDC1.9R is an automotive relay manufactured by CIT Relay and Switch, designed for high-current switching applications. It features a Single Pole Double Throw (SPDT) contact arrangement with a 40A maximum switching current rating at 75VDC. The coil operates on a nominal 12VDC supply, consuming 1.9W of power with a resistance of 90 ohms. This sealed unit utilizes PCB pins or quick connect terminals for mounting and includes a dust cover.

Relay Automotive Feature Summary

• High switching capacity up to 40A
• Compact size and lightweight construction
• Versatile mounting options including PCB pins and quick connects

Relay Automotive Applications

• Automotive electrical systems
• Lamp accessories
• General purpose industrial switching

Relay Automotive Procurement Notes

Verify the specific suffix '1.9R' against manufacturer documentation to confirm coil power and terminal configuration. Ensure compatibility with existing socket types if replacement is required. Confirm RoHS compliance status through official datasheets before integration into regulated assemblies.

Relay Automotive Selection Notes

Select this component when a 40A SPDT switching capability is required within automotive or heavy-duty environments. Consider the 12VDC coil voltage and 1.9W power consumption for driver circuit design. Evaluate the physical dimensions and mounting style against available board space or chassis constraints.

Relay Automotive Part Context

This model belongs to the A21CCQ series of automotive relays from CIT Relay and Switch. The series is characterized by robust construction suitable for harsh environments, offering large switching capacities in a small form factor. It is certified under QS-9000 and ISO-9002 standards for manufacturing quality.

Relay Automotive Replacement Considerations

Direct substitutes include models with identical 40A SPDT ratings and 12VDC coil specifications, such as the A21CCQ12VDC1.6D, provided pinout and mechanical dimensions match.