AZ9731-1A-12DC2D1

Relay Automotive Overview

The AZ9731-1A-12DC2D1 is a 40 Amp Mini-ISO automotive relay manufactured by American Zettler. It features a single-pole single-throw normally open (SPST-NO) contact arrangement with a 12VDC coil. The device supports a maximum switched current of 40A at 75VDC resistive load, delivering up to 560W power. Key electrical parameters include a nominal coil voltage of 12VDC, a coil resistance of 85 Ohms, and a maximum coil voltage of 21VDC. The unit exhibits a contact resistance of 100 mOhms and offers dielectric strength between coil and contacts of 500 Vrms.

Relay Automotive Feature Summary

• Features quick connect terminals for simplified installation in automotive environments.
• Provides high momentary carry current capability to handle transient loads effectively.
• Constructed with epoxy sealing to ensure protection against environmental factors.
• Supports metal or plastic mounting bracket options for flexible chassis integration.

Relay Automotive Applications

• Automotive lighting circuits
• Motor control systems
• Heater and fan activation

Relay Automotive Procurement Notes

Verify the specific suffix D1 corresponds to the required terminal configuration and coil protection type. Confirm that the 12VDC coil voltage aligns with the vehicle's electrical system standards. Ensure the 40A continuous rating meets the peak load requirements of the intended circuit application before finalizing procurement orders.

Relay Automotive Selection Notes

Select this component when a robust 40A switching capacity is required for 12VDC automotive applications. The SPST-NO configuration is suitable for simple on/off control tasks. Consider the physical dimensions and mounting bracket availability if space constraints exist within the vehicle's fuse box or relay panel assembly.

Relay Automotive Part Context

This part belongs to the AZ9731 series of Mini-ISO automotive relays from American Zettler. The series is designed for high-current switching in demanding vehicular environments. Variants within the family differ primarily in contact arrangement, coil voltage, and terminal style while maintaining the core 40A rating architecture.

Relay Automotive Replacement Considerations

Direct substitutes may include other 40A Mini-ISO relays with identical pinouts and coil specifications. Verify compatibility with existing socket interfaces and thermal management requirements when considering alternative manufacturers or updated part numbers.