AZ9731-1C-12DC3ED2

Relay Automotive Overview

The AZ9731-1C-12DC3ED2 is a 40 A Mini-ISO automotive relay manufactured by American Zettler. It features a 12 VDC coil and SPDT (1 Form C) contacts rated for resistive loads up to 560 W at 75 VDC. The unit includes a plastic dust cover and steel mounting bracket, with epoxy sealing for environmental protection. Quick-connect terminals facilitate installation, supporting high momentary carry current of 60 A and operation up to 110°C.

Relay Automotive Feature Summary

• SPDT contact configuration with 40 A continuous rating
• Epoxy sealed construction for environmental resistance
• Integrated quick-connect terminals for rapid assembly

Relay Automotive Applications

• Automotive electrical systems
• Industrial control circuits
• Power distribution management

Relay Automotive Procurement Notes

Verify the specific suffix ED2 confirms the inclusion of the plastic dust cover and steel mounting bracket as documented in official specifications. Ensure the 12 VDC coil voltage matches the system requirements. Confirm that the SPDT contact arrangement aligns with the circuit design needs before finalizing procurement orders.

Relay Automotive Selection Notes

Select this model when a 40 A switching capacity is required within a Mini-ISO form factor. The SPDT configuration provides flexibility for normally open or normally closed switching paths. Consider the 110°C operating temperature limit and the necessity for epoxy sealing in harsh environments when evaluating alternative relay options.

Relay Automotive Part Context

This component belongs to the AZ973 series of Mini-ISO automotive relays from American Zettler. The series offers various contact arrangements including SPST and SPDT configurations. The 12 VDC coil variant is designed for standard automotive electrical architectures, providing reliable switching for high-current DC loads in vehicle applications.

Relay Automotive Replacement Considerations

Cross-reference part numbers such as AZ9731-1C-12DC1E for similar specifications. Verify that substitute models maintain the same 40 A contact rating, 12 VDC coil requirement, and physical dimensions to ensure compatibility with existing mounting brackets and wiring harnesses.