A3M1ACQ12VDC2

Relay Automotive Overview

The A3M1ACQ12VDC2 is a sealed automotive relay manufactured by CIT Relay and Switch, designed for high-current applications. It features an SPST (1 Form A) normally open contact arrangement with a heavy-duty rating of 80A at 14VDC. The coil operates on 12VDC with a resistance of 80 Ohms and consumes 1.8W of power. Key electrical parameters include a maximum switching voltage of 75VDC, a maximum switching power of 1120W, and an initial contact resistance of less than 30 milliohms. The unit utilizes AgSnO2 In2O3 contact material and supports chassis mounting.

Relay Automotive Feature Summary

• Sealed construction provides environmental protection for automotive use
• High switching capacity rated up to 80A for heavy-duty loads
• SPST normally open configuration simplifies circuit integration

Relay Automotive Applications

• Automotive lighting systems
• Lamp accessories control
• Heavy-duty vehicle electrical circuits

Relay Automotive Procurement Notes

Verify the specific contact arrangement matches the required SPST NO configuration before procurement. Confirm that the 12VDC coil voltage aligns with the system's power supply capabilities. Ensure the chassis mounting style fits the available panel space. Check that the 80A current rating exceeds the maximum load requirements to prevent premature failure. Validate compliance with QS-9000 or ISO-9002 manufacturing standards if required by the project specifications.

Relay Automotive Selection Notes

Select this component when a single-pole normally open switch is required for high-current automotive loads. The 12VDC coil voltage is standard for most vehicle electrical systems. Consider the sealed design for environments requiring protection against moisture and dust. The chassis mount option offers secure installation compared to PCB-only alternatives. Evaluate the 80A capacity against peak load currents to ensure adequate safety margins during operation.

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 suitable for automobile applications. The A3M1ACQ12VDC2 variant specifically denotes the SPST NO contact form and 12VDC coil specification within this lineup.

Relay Automotive Replacement Considerations

Compatible substitutes include A3M1CSQ12VDC2 and A3M1USQ12VDC2DR, which share similar 80A ratings and 12VDC coil characteristics. Verify contact arrangement differences, as CSQ indicates SPDT and USQ indicates SPST NO with two terminals. Ensure mechanical dimensions and mounting styles are compatible with existing assemblies.