A42CS24VDC

Relay Automotive Overview

The A42CS24VDC is a sealed automotive relay from the CIT A4 series, designed for through-hole mounting. It features a single-pole double-throw (SPDT) contact configuration with a 20 A current rating and operates on a 24 VDC coil voltage. The unit utilizes silver tin oxide contacts to handle switching voltages up to 380 VAC or 75 VDC, supporting loads of up to 1500 VA. Key electrical parameters include a coil resistance of 576 Ohms, a coil current of 41.7 mA, and a coil power consumption of 1 W. Mechanical performance includes an operating time of 15 ms and a release time of 5 ms. The device functions within a temperature range of -40°C to 85°C and holds cURus certification.

Relay Automotive Feature Summary

• Sealed construction provides environmental protection for automotive applications
• Silver tin oxide contact material ensures durability under high-current switching conditions
• Single-pole double-throw configuration allows versatile circuit control paths

Relay Automotive Applications

• Automotive electrical systems
• Industrial control circuits
• General purpose switching applications requiring high current capacity

Relay Automotive Procurement Notes

Verify that the specific part number matches the required SPDT configuration and 24 VDC coil specification. Confirm that the through-hole PC pin termination style aligns with the target PCB layout. Ensure the sealed design meets the environmental requirements of the intended installation area. Check for any updated regulatory compliance documentation such as RoHS status before finalizing component selection.

Relay Automotive Selection Notes

Select this component when a robust, high-current relay is needed for automotive or industrial environments. The SPDT form C contact arrangement offers flexibility compared to simple on/off switches. Consider the 20 A rating for heavy loads and the 24 VDC coil for compatibility with standard vehicle or industrial control voltages. The sealed housing makes it suitable for harsher conditions where dust or moisture exposure is a concern.

Relay Automotive Part Context

This relay belongs to the CIT A4 series, which specializes in automotive-grade components. The series is characterized by high current ratings and durable contact materials. The A42CS24VDC specifically targets applications requiring reliable switching of significant electrical loads using a standard 24 VDC control signal, fitting into the broader category of general-purpose power relays.

Relay Automotive Replacement Considerations

Direct substitutes may include other automotive relays with identical SPDT contact forms, 24 VDC coil voltages, and comparable 20 A current ratings. Verify mechanical footprint and pinout compatibility before substitution. Alternative models from different manufacturers must match the sealing class and operating temperature range to ensure equivalent performance in automotive environments.