A2H1ASQ12VDC1.6

Relay Automotive Overview

The A2H1ASQ12VDC1.6 is a socketable automotive relay manufactured by CIT Relay and Switch, designed for high-current switching applications. It features a single pole single throw normally open (SPST-NO) contact arrangement, rated for up to 50A at 14VDC. The coil operates on 12VDC with a resistance of 90 Ohms and consumes 1.6W of power. Key electrical specifications include a maximum switching voltage of 75VDC and a maximum switching power of 630W. The unit utilizes silver tin oxide contacts with an initial contact resistance below 30 milliohms. Mechanical dimensions are approximately 26.0 x 26.0 x 24.5 mm, supporting quick connect mounting.

Relay Automotive Feature Summary

• Socketable design facilitates easy installation and replacement in automotive systems
• High current capacity suitable for demanding automotive loads
• Compact form factor with lightweight construction

Relay Automotive Applications

• Automotive lighting circuits
• Motor control systems
• General automotive accessory power distribution

Relay Automotive Procurement Notes

Verify the specific contact rating requirements against the datasheet, as some sources indicate 40A while others cite 50A for this variant. Confirm that the application circuit supports the 12VDC coil voltage and 1.6W power consumption. Ensure the mounting environment accommodates the specified physical dimensions and allows for adequate ventilation given the operating temperature range. Check for RoHS compliance status if required by project specifications.

Relay Automotive Selection Notes

Select this component when a socketable relay with high current handling is required for 12VDC automotive systems. The SPST-NO configuration is ideal for simple on/off control of loads such as lights or motors. Consider the 50A rating for heavy-duty applications compared to standard 40A variants. Verify compatibility with existing socket bases and wiring harnesses utilizing quick-connect terminals. Evaluate thermal management needs based on continuous load currents.

Relay Automotive Part Context

This part belongs to the A2 series of automotive relays from CIT Relay and Switch, characterized by robust construction and high switching capacity. The series includes various contact arrangements and coil voltages to suit different automotive electrical architectures. The A2H variant specifically denotes the 50A rating within this family, distinguishing it from lower-rated models like the A2S or A2M series.

Relay Automotive Replacement Considerations

Direct substitutes may include other CIT A2 series relays with identical coil and contact ratings, such as the A2S1ASQ12VDC1.6 if a 40A rating suffices. Cross-manufacturer replacements must match the 12VDC coil, SPST-NO contact form, socketable package, and minimum 50A current capacity. Verify dimensional compatibility with existing sockets before substitution.