A11ASQ48VDC1.2D

Relay Automotive Overview

The A11ASQ48VDC1.2D is an automotive relay manufactured by CIT Relay and Switch, designed for high-current switching applications in vehicle electrical systems. It features a single-pole single-throw normally open (SPST-NO) contact configuration capable of handling up to 30 amperes at a maximum switching voltage of 75 volts DC. The unit utilizes a 48-volt DC coil with a non-latching mechanism and operates within a temperature range of -40°C to 125°C. Constructed with sealed housing and silver tin oxide contacts, it ensures reliable performance in harsh environments. The relay employs quick-connect terminals for rapid installation and includes a built-in diode for coil protection.

Relay Automotive Feature Summary

• Sealed construction provides environmental protection against moisture and contaminants
• Non-latching coil design ensures immediate de-energization upon power loss
• Integrated suppression diode protects control circuits from voltage spikes
• Socketable base mount facilitates easy replacement and maintenance

Relay Automotive Applications

• Heavy-duty truck lighting circuits
• Industrial vehicle auxiliary power distribution
• Agricultural machinery control systems
• Marine vessel electrical management

Relay Automotive Procurement Notes

Verify the specific suffix 'D' indicates the inclusion of the internal suppression diode, as this affects circuit compatibility. Confirm that the 48VDC coil rating matches the vehicle's electrical architecture. Ensure the quick-connect terminal style aligns with existing harness connectors. Check RoHS compliance status if required for specific regional regulations. Validate the operating temperature range against the intended installation environment.

Relay Automotive Selection Notes

Select this model when a 30A capacity is required for 48V automotive systems. The SPST-NO configuration suits simple on/off control tasks. Consider the sealed design for exposed mounting locations. The quick-connect interface simplifies wiring compared to soldered alternatives. Evaluate the coil current draw to ensure the control switch can handle the load without additional driver components.

Relay Automotive Part Context

This component belongs to the A11 series of automotive relays from CIT Relay and Switch. The series offers various coil voltages and contact ratings to suit different vehicle types. The A11ASQ variant specifically denotes a sealed, socketable relay with quick-connect terminals. This family is engineered for durability and consistent performance in demanding transportation sectors.

Relay Automotive Replacement Considerations

Direct substitutes include other CIT Automotive Relays with identical 30A/48VDC specifications and SPST-NO form. Verify pinout compatibility for quick-connect terminals. Ensure the replacement part also includes a suppression diode if the original circuit relies on it. Cross-reference mechanical dimensions to confirm fitment in the designated relay holder.