A21CSQ48VDC1.6

Relay Automotive Overview

The A21CSQ48VDC1.6 is an automotive SPDT relay manufactured by CIT Relay and Switch, designed for 48V DC applications. It features a 40A contact rating and supports up to 75V DC maximum switching voltage. The coil operates at 48V DC with a current draw of 33.3 mA. This robust relay design ensures high isolation and durability for demanding automotive systems.

Relay Automotive Feature Summary

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

Relay Automotive Applications

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

Relay Automotive Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct coil voltage and contact configuration. Confirm RoHS compliance status and manufacturing certifications such as QS-9000 or ISO-9002 if required for your supply chain standards. Cross-reference the part number with the latest datasheet revisions to avoid discrepancies in specifications.

Relay Automotive Selection Notes

Select this component when a single-pole double-throw configuration is required for 48V DC automotive circuits. Ensure the load current does not exceed the 40A rating at the specified voltage. Consider the physical mounting requirements, as both PCB pins and quick connect terminals are supported. Verify that the coil drive voltage matches the system's 48V DC supply precisely.

Relay Automotive Part Context

This model belongs to the CIT automotive relay series, characterized by high current handling and compact form factors. It is engineered for reliability in vehicle environments where space is limited but power demands are significant. The SPDT design allows for versatile switching between two circuits using a single control signal.

Relay Automotive Replacement Considerations

Public confirmed substitute part numbers include A21CSQ48VDC1.6R. Ensure any replacement maintains the same SPDT contact form, 40A rating, and 48V DC coil specification. Verify mechanical footprint compatibility before substitution.