A2F1ASQ24VDC1.9R

Relay Automotive Overview

The A2F1ASQ24VDC1.9R is an active automotive relay from the CIT Relay and Switch A2 series, designed for high-current switching applications. It features a non-latching coil type with a 24VDC coil voltage and a resistance of 320 Ohms, drawing a coil current of 79.2 mA. The relay utilizes an SPST-NO (1 Form A) contact configuration rated for up to 40A at a maximum switching voltage of 75VDC. It operates within a temperature range of -40°C to 125°C and includes a built-in suppression diode.

Relay Automotive Feature Summary

• High switching capacity supporting up to 40A loads
• Compact design optimized for weight and space constraints
• Integrated suppression diode for circuit protection
• Sealed construction ensuring environmental durability

Relay Automotive Applications

• Automotive electrical systems
• Heavy-duty vehicle power distribution
• Industrial control circuits requiring high current
• Motor load switching applications

Relay Automotive Procurement Notes

Verify the specific ordering suffix against official CIT documentation to confirm terminal style and mounting configuration. Ensure the selected variant matches the required coil voltage and contact form for the target application. Cross-reference part numbers with authorized distributors to avoid counterfeit components. Confirm lead times and availability directly with suppliers prior to finalizing procurement plans.

Relay Automotive Selection Notes

Select this component when a single-pole normally-open contact is required for high-current automotive or industrial loads. Evaluate the 40A rating against peak and continuous load requirements to ensure adequate margin. Consider the 24VDC coil specification for compatibility with existing control logic. Verify that the quick-connect terminals align with the available harness or PCB interface options in the system design.

Relay Automotive Part Context

This model belongs to the CIT A2 series of automotive relays, which are engineered for robust performance in demanding environments. The series offers various contact configurations and coil voltages to suit diverse switching needs. The A2F1ASQ24VDC1.9R specifically addresses applications requiring reliable high-current switching with a compact footprint and sealed housing for enhanced longevity.

Relay Automotive Replacement Considerations

Direct substitutes include other CIT Automotive Relays with identical SPST-NO contacts, 24VDC coils, and 40A ratings. Verify mechanical dimensions and terminal types before swapping to ensure physical compatibility. Alternative manufacturers may offer similar specifications but require validation of thermal and electrical characteristics.