A21CSQ24VDC1.9

Relay Automotive Overview

The A21CSQ24VDC1.9 is an automotive SPDT relay manufactured by CIT Relay and Switch, designed for 24VDC systems. It features a 40A contact rating and switching voltage up to 75VDC. The coil operates at 24VDC with a current of 79.2 mA. This component provides reliable switching capabilities for high-current automotive applications.

Relay Automotive Feature Summary

• SPDT contact form providing one Form C configuration
• High current capacity rated at 40A
• Designed for 24VDC automotive electrical systems

Relay Automotive Applications

• Automotive electrical circuit switching
• High-current load control in vehicle systems
• 24VDC power distribution management

Relay Automotive Procurement Notes

Verify the specific part number A21CSQ24VDC1.9 against official CIT Relay and Switch documentation to confirm coil current specifications and contact ratings. Ensure compatibility with 24VDC system requirements before procurement. Cross-reference datasheets for mounting type and terminal configuration details.

Relay Automotive Selection Notes

Select this relay for applications requiring SPDT switching with a 40A capacity in 24VDC environments. Consider the 79.2 mA coil current for driver circuit design. Verify that the 75VDC maximum switching voltage aligns with the target circuit parameters. Ensure physical mounting constraints accommodate the relay's form factor.

Relay Automotive Part Context

This component belongs to the CIT Relay and Switch automotive relay series, specifically engineered for demanding vehicular applications. The A21CSQ model line offers robust performance for high-current switching tasks within standard automotive electrical architectures.

Relay Automotive Replacement Considerations

The A21CSQ24VDC1.6 is a similar SPDT relay with identical 24VDC coil voltage and 40A contact rating but differs in coil current (66.7 mA). Verify functional equivalence based on specific coil drive requirements before substitution.