A3M1ASQ24VDC2

Relay Automotive Overview

The A3M1ASQ24VDC2 is a fully sealed automotive relay manufactured by CIT Relay and Switch. It features an SPST-NO contact configuration with an 80A current rating and a maximum switching voltage of 75VDC. The coil operates at 24VDC, drawing 75mA with a resistance of 320 Ohms. Key electrical parameters include a pull-in voltage of 16.8VDC, a release voltage of 2.4VDC, and a coil power consumption of 1.8W. Mechanical performance includes a working time of 7ms and a release time of 5ms. The unit utilizes AgSnOInO contact material and supports chassis mounting via quick-connect terminals.

Relay Automotive Feature Summary

• Fully sealed construction designed for harsh automotive environments
• High switching capacity rated at 80A for heavy load applications
• Integrated suppression diode for coil protection
• Chassis mount design with quick-connect terminal interface

Relay Automotive Applications

• Automotive high-current circuit protection
• Vehicle lighting systems control
• Industrial equipment power distribution
• Motor control circuits in transportation

Relay Automotive Procurement Notes

Verify the specific ordering suffix to ensure compatibility with required terminal types and environmental ratings. Confirm that the 24VDC coil voltage aligns with the target system's power supply architecture. Check for RoHS compliance status if restricted substances are prohibited in the assembly process. Ensure the chassis mounting style matches the available installation space and bracket configurations.

Relay Automotive Selection Notes

Select this component when an 80A single-pole normally-open switch is required for 24VDC automotive or industrial systems. The sealed design makes it suitable for exposed locations where moisture or dust ingress must be prevented. Consider the 75VDC maximum switching voltage limit when designing circuits with higher potential transients. The quick-connect terminals facilitate rapid assembly and maintenance compared to soldered alternatives.

Relay Automotive Part Context

This part belongs to the A3M series of automotive relays from CIT Relay and Switch. The series is characterized by large switching capacities and compact dimensions suitable for modern vehicle electrical architectures. The A3M1ASQ variant specifically denotes the SPST-NO configuration with quick-connect terminals and a sealed housing, distinguishing it from open-frame or different contact arrangement models within the same product line.

Relay Automotive Replacement Considerations

Direct substitutes may include other CIT Automotive Relays with identical 80A ratings and 24VDC coils, such as the A3M1CSQ24VDC2D, provided the contact form (SPST-NO vs SPDT) and terminal style match the existing PCB or harness layout. Verify pinout compatibility before swapping.