A21ASP12VDC1.6

Relay Automotive Overview

The A21ASP12VDC1.6 is a sealed 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 arrangement capable of handling up to 40A at 14VDC. The coil operates on 12VDC with a power consumption of 1.6W and a resistance of 90 Ohms. The unit utilizes quick-connect terminals for installation and is rated for an operating temperature range of -40°C to 125°C.

Relay Automotive Feature Summary

• Fully sealed construction protects internal components from environmental factors
• High current capacity supports demanding automotive loads
• Compact form factor suitable for space-constrained installations

Relay Automotive Applications

• Automotive lighting circuits
• Starter motor control
• Heater and fan motor switching
• General vehicle accessory power distribution

Relay Automotive Procurement Notes

Verify the specific terminal configuration and mounting style required for your application before ordering. Confirm that the 12VDC coil voltage matches your vehicle's electrical system. Ensure the 40A contact rating exceeds the maximum load current of the connected device. Check for any necessary accessories such as relay sockets or protective covers.

Relay Automotive Selection Notes

Select this model when a sealed, high-current SPST relay is needed for automotive environments. Consider the 12VDC coil requirement and quick-connect interface compatibility. Evaluate the operating temperature range against your specific application conditions. Compare physical dimensions and mounting requirements with available space in the vehicle's fuse box or relay panel.

Relay Automotive Part Context

This component belongs to CIT's A2 series of automotive relays, which are widely used in various vehicle platforms. The series offers multiple contact configurations and coil voltages to suit different design needs. CIT Relay and Switch specializes in reliable switching solutions for automotive, industrial, and telecommunications markets.

Relay Automotive Replacement Considerations

Direct substitutes include models with identical electrical ratings and physical footprints, such as the A21ASP12VDC1.6D if a diode is required. Verify that any replacement maintains the same SPST-NO contact form, 12VDC coil voltage, and 40A current rating. Ensure the sealing level and terminal type match the original design specifications.