A2KM1CSQ24VDC1.6R

Relay Automotive Overview

The A2KM1CSQ24VDC1.6R is a sealed automotive relay manufactured by CIT Relay and Switch, designed for high-current applications. It features an SPDT (Form C) contact arrangement with a maximum switching current of 120A at 14VDC. The coil operates on a 24VDC supply with a rated power consumption of 1.6W. Key electrical parameters include a maximum switching voltage of 75VDC and a contact resistance of less than 30 milliohms. The unit utilizes quick connect terminals for mounting and includes an internal resistor.

Relay Automotive Feature Summary

• High switching capacity supporting up to 120A for demanding automotive loads
• Sealed construction ensures protection against environmental contaminants
• Integrated internal resistor eliminates the need for external suppression components

Relay Automotive Applications

• Automotive lighting systems
• Starter motor control circuits
• Heater and blower motor actuation

Relay Automotive Procurement Notes

Verify the specific part number suffix 'R' confirms the inclusion of the internal resistor, as this alters the electrical characteristics compared to non-resistor variants. Ensure the 24VDC coil voltage matches the vehicle's electrical system architecture. Confirm that the 120A contact rating aligns with the peak load requirements of the intended application circuit to prevent premature failure.

Relay Automotive Selection Notes

Select this component when a high-current single-pole double-throw configuration is required in a compact form factor. The sealed design makes it suitable for harsh environments where moisture or dust ingress is a concern. The integrated resistor simplifies circuit design by removing the need for flyback diodes or snubbers across the coil, reducing overall bill of materials complexity.

Relay Automotive Part Context

This model belongs to the CIT automotive relay series, characterized by robust chassis mounting and quick-connect terminal interfaces. It is engineered to meet stringent automotive reliability standards, offering a balance between high current handling capabilities and physical compactness for integration into modern vehicle electrical distribution panels.

Relay Automotive Replacement Considerations

Direct substitutes must match the 24VDC coil voltage, SPDT contact form, and 120A current rating. Verify that any replacement also includes an internal resistor if the original circuit relies on it for suppression. Physical dimensions and terminal layout compatibility are critical for seamless installation without harness modifications.