AZ9731-1C-24DC2ED2

Relay Automotive Overview

The AZ9731-1C-24DC2ED2 is a 40 Amp Mini-ISO automotive relay manufactured by American Zettler. It features a single Form C (SPDT) contact arrangement designed for chassis mounting. The coil operates at a nominal voltage of 24 VDC with a resistance of 360 Ohms and a maximum rating of 31.2 VDC. The contacts support a maximum DC current of 40 A at 75 VDC, providing up to 630 W resistive load capacity. Dielectric strength between the coil and contacts is rated at 500 Vrms.

Relay Automotive Feature Summary

• High switching capability of up to 40 Amps in a compact Mini-ISO footprint
• Robust construction resistant to vibration and shock for automotive environments
• Single Form C contact configuration enabling versatile circuit control
• Designed specifically for high in-rush applications common in automotive systems

Relay Automotive Applications

• Automotive power distribution circuits
• High-current accessory control modules
• Vehicle lighting system management
• Motor and solenoid switching applications

Relay Automotive Procurement Notes

Verify the specific suffix ED2 against the manufacturer's official datasheet to confirm terminal configuration and sealing requirements. Ensure the 24VDC coil specification matches the vehicle's electrical architecture. Confirm that the 40A contact rating aligns with the peak load demands of the intended application to prevent premature failure or overheating during operation.

Relay Automotive Selection Notes

Select this model when a compact, high-current solution is required for automotive chassis mounting. The SPDT configuration offers flexibility for normally open or normally closed logic. Consider the 360 Ohm coil resistance for driver circuit design. Ensure the 75VDC contact voltage limit is not exceeded in the target application environment to maintain safety and reliability standards.

Relay Automotive Part Context

This component belongs to the AZ9731 series of Mini-ISO automotive relays from American Zettler. These relays are engineered for durability in harsh automotive environments, offering superior performance compared to standard ISO relays. The series is characterized by its ability to handle significant in-rush currents while maintaining a small physical footprint suitable for modern vehicle packaging constraints.

Relay Automotive Replacement Considerations

Compatible substitutes within the AZ9731 family include models with identical coil voltages and contact arrangements, such as AZ9731-1C-24DC1ED2. Verify that any replacement maintains the same 40A current rating and Mini-ISO form factor to ensure direct interchangeability without modifying the existing harness or mounting bracket.