A2F1CSQ24VDC1.9

Relay Automotive Overview

The A2F1CSQ24VDC1.9 is a general-purpose power relay manufactured by CIT Relay and Switch, designed for high-current switching applications. It features an SPDT (Single Pole Double Throw) contact configuration with one Form C set. The coil operates at 24VDC with a current draw of 66.7 mA and a resistance of approximately 360 Ohms. The contacts are rated for a maximum continuous current of 40A, supporting switching voltages up to 75VDC. The device utilizes silver tin oxide (AgSnO) contact material and offers a mechanical life suitable for industrial use. It is housed in a sealed package with PCB pin termination, ensuring reliable performance across a wide operating temperature range.

Relay Automotive Feature Summary

• High switching capacity capable of handling up to 40A load currents
• SPDT contact configuration providing versatile circuit control options
• Sealed construction with PCB pin mounting for secure installation
• Utilizes AgSnO contact material for enhanced durability

Relay Automotive Applications

• Automotive lamp accessories and lighting circuits
• General purpose industrial control systems
• Power distribution units requiring high current switching
• Automotive electrical system protection modules

Relay Automotive Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest datasheet to ensure compatibility with required coil voltage and contact form. Confirm that the PCB footprint matches the intended design layout. Check for any recent updates to certification marks such as cURus or TUV. Ensure storage conditions comply with humidity and temperature specifications to maintain seal integrity prior to assembly.

Relay Automotive Selection Notes

Select this component when a single pole double throw configuration is required for loads exceeding standard relay capabilities. The 40A rating makes it suitable for direct switching of high-power devices without auxiliary contactors. Consider the 24VDC coil requirement for control circuit compatibility. Evaluate the physical dimensions and terminal style against available board space and assembly methods.

Relay Automotive Part Context

This model belongs to the A2 series of automotive and general-purpose relays from CIT Relay and Switch. The series is characterized by compact size and high current carrying capacity. The A2F1 variant specifically denotes the SPDT contact arrangement. This family is widely used in automotive and industrial sectors where reliability under high load conditions is critical.

Relay Automotive Replacement Considerations

Direct substitutes must match the 24VDC coil voltage, SPDT contact form, and 40A current rating. Verify that alternative components offer compatible PCB pin spacing and sealing standards. Cross-reference part numbers within the same manufacturer series for minor packaging variations.