A2H1CSQ12VDC1.6R

Relay Automotive Overview

The A2H1CSQ12VDC1.6R is a sealed SPDT automotive relay manufactured by CIT Relay and Switch, designed for high-current switching applications. It features a 12VDC coil with a rated power of 1.6W and a resistance of 90 Ohms. The contact arrangement supports a maximum switching current of 50A at 14VDC, with a maximum switching voltage of 75VDC and a maximum switching power of 630W. The unit utilizes AgSnO2 contact material with an initial contact resistance of less than 30 milliohms. Dimensions are approximately 26.0 x 26.0 x 24.5 mm, and it offers quick connect termination options.

Relay Automotive Feature Summary

• Sealed construction with metal bracket and shroud for environmental protection
• High switching capacity up to 50A suitable for automotive loads
• Quick connect termination for simplified PCB or wire harness installation

Relay Automotive Applications

• Automotive lamp control circuits
• DC motor switching applications
• General automotive accessory power distribution

Relay Automotive Procurement Notes

Verify the specific suffix 'R' against the manufacturer's official datasheet to confirm the inclusion of internal components such as resistors or diodes, as ordering suffixes may alter functional characteristics. Ensure compatibility with standard ISO-sized relay sockets and validate that the 12VDC coil voltage aligns with the target vehicle electrical system requirements before procurement.

Relay Automotive Selection Notes

Select this component when a single-pole double-throw configuration is required for switching up to 50A in automotive environments. The sealed design and quick-connect terminals make it suitable for space-constrained installations where robustness against vibration and moisture is critical. Confirm that the 1.6W coil power consumption fits within the available driver circuit capacity.

Relay Automotive Part Context

This model belongs to the CIT A2 series of ISO-sized automotive relays. The series is characterized by compact dimensions, light weight, and large switching capacities certified under QS-9000 and ISO-9002 standards. Variants within the series differ primarily in contact arrangement (SPST/SPDT) and coil voltage ratings while maintaining consistent physical form factors for interchangeability.

Relay Automotive Replacement Considerations

Direct substitutes include other CIT A2 series relays with matching SPDT configurations and 12VDC coils, such as A2S1CSQ12VDC1.6R, provided the current rating meets application needs. Cross-manufacturer replacements must match the ISO footprint, pinout, and sealing specifications.