A51CS24VDC1.9

Relay Automotive Overview

The A51CS24VDC1.9 is an automotive SPDT relay manufactured by CIT Relay and Switch, designed for high-current switching applications in demanding vehicle environments. It features a non-latching coil configuration with a 24VDC operating voltage and a coil current of 66.7 mA. The switch contacts are rated for 40A at 24VDC, providing robust power management capabilities. This through-hole component operates within a temperature range of -40°C to 85°C and includes a 5 ms make time with a release voltage of 2.4 VDC, ensuring reliable performance in critical automotive electrical systems.

Relay Automotive Feature Summary

• SPDT contact form (1 Form C) for versatile circuit control
• High current capacity rated at 40A for heavy-duty loads
• Non-latching coil design for standard power management
• Through-hole mounting for secure PCB integration

Relay Automotive Applications

• Automotive power distribution systems
• Vehicle accessory control circuits
• High-current load switching in transportation
• General electronic equipment requiring robust relays

Relay Automotive Procurement Notes

Verify the specific coil voltage and contact rating against the target application requirements before procurement. Confirm that the through-hole package dimensions align with the PCB layout constraints. Ensure the operating temperature range meets the environmental conditions of the intended installation site to guarantee long-term reliability.

Relay Automotive Selection Notes

Select this model when a single pole double throw configuration is required for switching high currents up to 40A. The 24VDC coil specification makes it suitable for standard automotive and industrial DC systems. Consider the mechanical lifespan and thermal characteristics if the application involves frequent switching cycles or elevated ambient temperatures.

Relay Automotive Part Context

This component belongs to the CIT Relay and Switch portfolio of automotive relays engineered for dependable performance in demanding vehicle applications. The series offers versatility through various sizes, contact configurations, and coil options, supporting everything from basic power management to complex control systems in modern transportation.

Relay Automotive Replacement Considerations

Cross-reference with other CIT Automotive Relays such as the A51CS24VDC1.6 for similar SPDT functionality but potentially different coil current ratings. Verify that any substitute maintains the 40A contact rating and 24VDC coil compatibility to ensure seamless integration without redesigning the host circuit board.