AZ971-1A-24D

Relay Automotive Overview

The AZ971-1A-24D is an automotive power relay manufactured by American Zettler. It features a single pole single throw normally open (SPST-NO) contact configuration, designated as Form A. The device supports a switching current of up to 45 Amps and operates with a nominal coil voltage of 24 VDC. Designed for printed circuit board mounting, this non-latching relay utilizes a compact footprint suitable for space-constrained automotive applications. The unit is available in open, covered, or sealed variants to meet specific environmental protection requirements.

Relay Automotive Feature Summary

• High current switching capability within a compact physical form factor
• Available in open, covered, or sealed housing configurations
• Designed for direct printed circuit board integration

Relay Automotive Applications

• Automotive electrical systems
• High-current load control circuits
• Vehicle accessory power management

Relay Automotive Procurement Notes

Verify the exact contact configuration suffix matches the design requirement, as the AZ971 series includes SPDT variants. Confirm whether the application requires a sealed or open housing type, as environmental sealing affects performance. Ensure the PCB layout accommodates the specific terminal spacing and mounting dimensions defined in the official datasheet. Cross-reference the coil resistance and operating voltage range against the system power supply specifications to guarantee reliable actuation under all operating conditions.

Relay Automotive Selection Notes

Select this component when a high-current single-channel switch is required in automotive environments. The 45 Amp rating distinguishes it from lower-capacity miniature relays. Consider the sealed variant if moisture or dust exposure is anticipated. Verify that the PCB trace width can handle the maximum contact current without excessive heating. Evaluate thermal management needs based on the continuous load current relative to the rated capacity.

Relay Automotive Part Context

This model belongs to the AZ971 series of automotive relays, which are characterized by their robust switching capabilities and compact European-style footprint. The series offers multiple contact forms, including SPST and SPDT options, allowing designers to choose between single or dual channel switching. The AZ971 line is engineered specifically for automotive durability, providing reliable operation in demanding vehicle electrical architectures where space and current handling are critical constraints.

Relay Automotive Replacement Considerations

Direct substitutes within the same family include the AZ971E-1C-24D, though this variant features a SPDT (Form C) contact configuration rather than the SPST (Form A) found in the AZ971-1A-24D. Designers must verify that the additional contact set does not interfere with board space or circuit logic. Other series such as AZ8 offer different current ratings and package styles, requiring thorough mechanical and electrical validation before substitution.