A2S1CSQ24VDC1.9R

Relay Automotive Overview

The A2S1CSQ24VDC1.9R is a sealed SPDT automotive relay manufactured by CIT Relay and Switch, designed for chassis mounting applications. It features a 24VDC non-latching coil with a resistance of 303.2 Ohms and a power consumption of 1.9W. The relay supports a switching capacity up to 40A at 14VDC and operates with a maximum switching voltage of 75VDC. Key electrical parameters include a contact resistance of less than 30 milliohms initially and a switching speed of 5ms. The unit utilizes AgSnO2 contact material and offers both PCB pin and quick connect termination options.

Relay Automotive Feature Summary

• Sealed construction suitable for automotive environments
• SPDT (1 Form C) contact arrangement for versatile circuit control
• Quick connect termination for simplified installation

Relay Automotive Applications

• Automotive lighting circuits
• Vehicle accessory power management
• Industrial control systems requiring high current switching

Relay Automotive Procurement Notes

Verify the specific coil resistance value against the manufacturer's latest datasheet, as variations exist between similar models like the 1.6R variant. Confirm that the 24VDC coil voltage aligns with the target system architecture. Ensure the SPDT configuration meets the required circuit logic before procurement. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Relay Automotive Selection Notes

Select this component when a robust SPDT relay with a 24VDC coil is required for automotive or industrial use. The 40A switching capacity makes it suitable for high-load applications such as lamps or motors. Consider the chassis mount style and quick connect terminals for ease of integration into existing harnesses. Compare coil power consumption against available power supplies to ensure adequate drive capability.

Relay Automotive Part Context

This part belongs to the CIT automotive relay series, characterized by sealed housings and high current handling capabilities. The A2S1CSQ24VDC1.9R specifically denotes a 24VDC coil variant with 1.9W power rating. It is distinct from lower power variants like the 1.6R model, offering different coil impedance characteristics while maintaining similar mechanical and switching performance standards for vehicle applications.

Relay Automotive Replacement Considerations

The A2S1CSQ24VDC1.6R is a comparable alternative within the same product family, differing primarily in coil resistance and power consumption. Verify that the 1.6R variant's coil specifications are compatible with the driving circuit before substitution. Both models share identical switching capacities and form factors.