A2F1ACQ24VDC1.9

Relay Automotive Overview

The A2F1ACQ24VDC1.9 is an automotive relay manufactured by CIT Relay and Switch, designed for high-current switching applications. It features a SPST-NO (Single Pole Single Throw - Normally Open) contact arrangement with a maximum switching current of 40A at 14VDC. The coil operates on a rated voltage of 24VDC, with a maximum limit of 31.2VDC and a coil resistance of 90 ohms plus or minus 10%. The component utilizes AgSnO2 contact material to ensure durability and low initial contact resistance below 30 milliohms. It supports a maximum switching power of 630W and a maximum switching voltage of 75VDC.

Relay Automotive Feature Summary

• Large switching capacity up to 40A
• Small size and light weight design
• PCB pin and quick connect mounting available

Relay Automotive Applications

• Automotive electrical systems
• Lamp accessories
• High-current circuit control

Relay Automotive Procurement Notes

Verify the specific ordering suffix against official CIT documentation to confirm mechanical mounting style and terminal configuration. Ensure the coil voltage rating matches the system requirements precisely. Check for RoHS compliance status if environmental regulations apply. Confirm that the 40A current rating aligns with the load characteristics to prevent premature failure.

Relay Automotive Selection Notes

Select this model when a single normally open contact path is required for loads up to 40A in automotive environments. The 24VDC coil specification must match the vehicle's electrical architecture. Consider the physical dimensions and mounting options, such as PCB pins or quick connectors, based on the assembly constraints. Verify that the 630W power handling capability exceeds the connected load's peak requirements.

Relay Automotive Part Context

This component belongs to the CIT automotive relay series, characterized by robust construction for harsh environments. It is part of a broader family of relays offering various contact arrangements and coil voltages. The A2F1ACQ24VDC1.9 specifically addresses the need for reliable high-current switching in compact spaces within modern vehicles.

Relay Automotive Replacement Considerations

Public confirmed substitute part numbers are not provided in the available documentation. Cross-referencing requires matching the SPST-NO configuration, 24VDC coil, 40A rating, and physical footprint with equivalent automotive relays from other manufacturers.