A21CSQ24VDC1.6R

Relay Automotive Overview

The A21CSQ24VDC1.6R is an automotive relay from the CIT Relay and Switch A2 series, designed for DC control applications in harsh environments. It features a non-latching coil type with a 24VDC coil voltage and a maximum switching voltage of 75VDC. The unit utilizes an SPDT (1 Form C) contact configuration capable of handling up to 40A current. Key electrical parameters include a coil current of 66.7 mA and a must-operate voltage of 16.8 VDC. The device supports quick connect termination and socketable mounting.

Relay Automotive Feature Summary

• High switching capacity rated at 40A for robust load handling
• Compact design optimized for small size and light weight requirements
• Dual mounting flexibility supporting both PCB pin and quick connect interfaces

Relay Automotive Applications

• Automotive DC control systems
• Vehicle protection circuits
• Harsh environment industrial switching

Relay Automotive Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct coil voltage and contact form alignment. Confirm that the required termination style matches the available options, as variations exist within the series. Cross-reference the RoHS compliance status if environmental regulations apply to your specific deployment scenario.

Relay Automotive Selection Notes

Select this component when a high-current DC relay is required for automotive or heavy-duty applications. Ensure the system voltage aligns with the 24VDC coil specification and that the 75VDC switching limit meets circuit requirements. Consider the physical footprint and mounting constraints, as the design accommodates both PCB and quick connect installations.

Relay Automotive Part Context

This model belongs to the CIT A2 series of automotive relays, which are engineered for reliability in demanding conditions. The series offers various coil voltages and contact configurations to suit different vehicle architectures. The A21CSQ variant specifically addresses high-current needs with its 40A rating and SPDT functionality.

Relay Automotive Replacement Considerations

Compatible substitutes within the same family include the A21CSP24VDC1.6D1 and A2S1CSQ24VDC1.6R. Verify that alternative part numbers maintain identical coil voltage, contact form, and current ratings before substitution.