A21CSP48VDC1.6D

Relay Automotive Overview

The A21CSP48VDC1.6D is an automotive relay manufactured by CIT Relay and Switch, designed for high-current switching applications. It features a Single Pole Double Throw (SPDT) contact arrangement with a maximum switching current of 40A at 14VDC and a maximum switching voltage of 75VDC. The coil operates at a rated voltage of 48VDC, drawing a coil current of 33.3 mA with a coil resistance of 360 ohms. The unit measures 26.0 x 26.0 x 24.5 mm and utilizes quick connect mounting terminals.

Relay Automotive Feature Summary

• Large switching capacity up to 40A
• Small size and light weight design
• Quick connect mounting available

Relay Automotive Applications

• Automotive electrical systems
• Lamp accessories control

Relay Automotive Procurement Notes

Verify the specific contact configuration and coil voltage requirements against the target circuit design before procurement. Ensure that the quick connect terminal type matches the harness connectors in the assembly. Confirm compliance with QS-9000 or ISO-9002 manufacturing standards if required by the supply chain specifications. Cross-reference the datasheet for mechanical dimensions to ensure adequate clearance within the enclosure.

Relay Automotive Selection Notes

Select this component when a 48VDC coil voltage is required for the control circuit. The SPDT configuration allows for switching between two separate circuits. Consider the 40A current rating for high-power loads such as lighting or motor controls. Evaluate the physical space constraints against the 26.0 x 26.0 x 24.5 mm package dimensions. Verify that the quick connect interface is compatible with the existing wiring infrastructure.

Relay Automotive Part Context

This relay belongs to the A21 series from CIT Relay and Switch, which is characterized by compact dimensions and high current handling capabilities. The series is commonly utilized in automotive environments where reliable switching of significant electrical loads is necessary. The A21CSP48VDC1.6D variant specifically addresses applications requiring a 48VDC coil, distinguishing it from lower voltage variants within the same product family.

Relay Automotive Replacement Considerations

Public confirmed substitute part numbers are not available.