A2HM1ASQ24VDC1.6R

Relay Automotive Overview

The A2HM1ASQ24VDC1.6R is a sealed automotive relay manufactured by CIT Relay and Switch, designed for high-current switching applications. It features a SPST-NO contact arrangement with a maximum switching current of 40A at 14VDC and a maximum switching voltage of 75VDC. The coil operates at a rated voltage of 24VDC, drawing 133.3mA with a resistance of 320 Ohms and a power consumption of 1.6W. The unit utilizes silver tin oxide (AgSnO) contacts to ensure low initial contact resistance below 30 milliohms. It supports quick connect mounting terminals measuring 0.250 inches (6.3mm) and is certified under QS-9000 and ISO-9002 standards for automotive reliability.

Relay Automotive Feature Summary

• Sealed construction suitable for harsh automotive environments
• High switching capacity up to 40A for heavy loads
• Quick connect terminal mounting for simplified assembly

Relay Automotive Applications

• Automotive lighting circuits
• Lamp accessories control
• General automotive electrical systems

Relay Automotive Procurement Notes

Verify the specific ordering suffix against the manufacturer's official catalog to confirm terminal type and coil specifications. Ensure the application environment temperature falls within the specified operating range of -40°C to 125°C. Confirm that the load characteristics do not exceed the maximum switching power or voltage ratings defined in the datasheet. Check for RoHS compliance requirements if applicable to the final assembly.

Relay Automotive Selection Notes

Select this model when a 24VDC coil voltage is required for automotive systems. The 40A rating makes it suitable for high-power loads such as headlights or auxiliary lamps. Consider the physical dimensions and mounting style to ensure compatibility with the PCB or harness design. Compare against similar A-series relays if different contact arrangements or coil resistances are needed for the specific circuit design.

Relay Automotive Part Context

This component belongs to the CIT A Series automotive relays, which are widely used in vehicle electrical architectures. The series is characterized by robust sealing and high current handling capabilities. It is part of a broader family of switches and relays certified for automotive manufacturing quality standards, ensuring consistency across various vehicle models and accessory applications.

Relay Automotive Replacement Considerations

Direct substitutes may include other CIT A-series relays with identical 24VDC coil parameters and 40A contact ratings. Verify pinout compatibility and terminal spacing before substitution. Cross-reference with equivalent automotive relays from other manufacturers only if mechanical and electrical specifications match exactly.