A2M1ASQ24VDC1.9

Relay Automotive Overview

The A2M1ASQ24VDC1.9 is an automotive relay manufactured by CIT Relay and Switch, designed for chassis mounting applications. It features a SPST-NO (Form A) contact arrangement with a maximum switching current of 40A at 14VDC. The coil operates on a 24VDC supply, drawing approximately 66.7mA with a power consumption of 1.9W. Key electrical specifications include a maximum switching voltage of 75VDC and initial contact resistance below 30 milliohms. The unit utilizes AgSnO2 contact material and is RoHS compliant.

Relay Automotive Feature Summary

• Large switching capacity up to 40A
• Small size and light weight design
• Chassis mount configuration with quick connect terminals

Relay Automotive Applications

• Automotive electrical systems
• Lamp accessories control
• General automotive load switching

Relay Automotive Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm coil power ratings and terminal configurations. Ensure compatibility with chassis mounting requirements and verify that the 24VDC coil voltage aligns with the target system's power supply architecture before procurement.

Relay Automotive Selection Notes

Select this component when a high-current single-pole switch is required in automotive environments. The 24VDC coil specification distinguishes it from 12V variants. Consider the chassis mount form factor for space-constrained installations where PCB pin mounting is not feasible. Confirm thermal management needs given the 1.9W coil power dissipation.

Relay Automotive Part Context

This relay belongs to the CIT A2 series, which is certified under QS-9000 and ISO-9002 standards. The series is characterized by robust construction suitable for harsh automotive conditions. The A2M1 designation typically indicates a standard switching capacity variant within the product line, distinct from heavy-duty models like the A3 series.

Relay Automotive Replacement Considerations

Cross-reference part numbers such as A2M1ASQ24VDC1.6D or A2S1ASQ24VDC1.6 for potential substitutes. Verify that coil voltage, contact form, and current ratings match exactly. Note that different suffixes may indicate variations in coil power or terminal style.