A2HF1ACQ24VDC1.6D

Relay Automotive Overview

The A2HF1ACQ24VDC1.6D is a sealed automotive relay manufactured by CIT Relay and Switch, designed for high-current switching applications. It features an SPST-NO (1 Form A) contact configuration with a rated current of 50A and a maximum switching voltage of 75VDC. The coil operates at 24VDC with a nominal current of 66.7mA and resistance of 360 Ohms. Key electrical parameters include a minimum pull-in voltage of 16.8VDC and a minimum release voltage of 1.2VDC. The device supports quick-connect terminals measuring 0.250 inches (6.3mm) and functions within a temperature range of -40°C to 125°C.

Relay Automotive Feature Summary

• Sealed construction ensures reliable operation in harsh automotive environments
• High switching capacity of 50A accommodates demanding load requirements
• Compact flanged design facilitates secure mounting and heat dissipation

Relay Automotive Applications

• Automotive power distribution systems
• Vehicle lighting circuits
• Heater and fan motor control
• General automotive accessory activation

Relay Automotive Procurement Notes

Verify the specific terminal type and mounting style against the mechanical drawings before ordering. Confirm that the 24VDC coil voltage matches the vehicle's electrical system architecture. Ensure the 50A contact rating exceeds the peak load current of the intended application to prevent premature failure. Check for any required accessories such as base sockets or protective covers.

Relay Automotive Selection Notes

Select this component when a single-pole normally-open configuration is required for high-current DC loads up to 50A. The 24VDC coil specification makes it suitable for heavy-duty vehicles and commercial transport applications. Consider the sealed nature of the unit if exposure to moisture or dust is expected. Compare thermal performance and physical dimensions against existing board or panel space constraints.

Relay Automotive Part Context

This relay belongs to the A2 series from CIT Relay and Switch, which specializes in rugged automotive components. The series offers various contact forms and coil voltages to suit different vehicle architectures. The A2HF variant specifically denotes a high-current capability with a flanged housing for enhanced stability and thermal management compared to standard miniature relays.

Relay Automotive Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing bases and wiring harnesses if sourcing alternatives. Ensure any replacement maintains the same SPST-NO contact form and 24VDC coil voltage to preserve circuit functionality.