AZ971E-1A-24D

Relay Automotive Overview

The AZ971E-1A-24D is a miniature power relay designed for automotive applications, manufactured by American Zettler. It features a SPST (1 Form A) contact arrangement with a maximum switching current of 40 A and a maximum switched voltage of 150 VDC. The coil operates at 24 VDC. The device offers a resistive load capacity of 560 W for the Form A configuration. Mechanical life expectancy is rated at 5 x 10^6 operations, while electrical life is 1 x 10^5 operations at 40 A. Typical operate time is 5 ms and release time is 3 ms at nominal coil voltage.

Relay Automotive Feature Summary

• Compact European-style footprint suitable for space-constrained automotive designs
• High current switching capability up to 40 Amps in a miniature package
• Robust construction resistant to vibration and shock
• Available in open, covered, or sealed configurations

Relay Automotive Applications

• Automotive high-current circuit control
• High in-rush load applications
• General purpose power switching in compact enclosures

Relay Automotive Procurement Notes

Verify the specific contact form (Form A vs B vs C) and coil voltage requirements against the target application schematic. Confirm whether an open, covered, or sealed variant is required for environmental protection. Ensure that switching voltages exceeding 30 VDC are handled according to manufacturer precautions. Cross-reference the part number suffixes to confirm exact mechanical and electrical specifications before ordering.

Relay Automotive Selection Notes

Select this component when a high-current 40 A switching solution is needed within a small European-style footprint. The 24 VDC coil makes it compatible with standard automotive electrical systems. Consider the mechanical and electrical life ratings relative to the expected operational frequency. Verify dielectric strength requirements between the coil and contacts if isolation is critical.

Relay Automotive Part Context

This relay belongs to the AZ970E/AZ971E series of miniature power relays from American Zettler. The series is characterized by its ability to handle up to 40 Amps in a compact size. The AZ971E-1A-24D specifically denotes the SPST (1 Form A) contact configuration with a 24 VDC coil. This family is widely used in automotive and industrial control panels requiring reliable high-current switching.

Relay Automotive Replacement Considerations

Direct substitutes within the same series include variants with different contact forms such as AZ971E-1B-24D (SPST-NC) or AZ971E-1C-24D (SPDT), provided the circuit logic allows. Coils of other voltages like AZ971E-1A-12D exist but require voltage compatibility checks. No cross-manufacturer direct replacements are confirmed without extensive testing.