1558665-7

Overview

The TE Connectivity Potter & Brumfield 1558665-7 is a general purpose power relay from the T9G series, designed for PCB mounting. It features a monostable coil configuration with a 24 VDC coil voltage and a contact rating of 20 A in a single pole double throw (SPDT) Form C arrangement. The device utilizes quick-connect terminals sized at 0.187 inches and 0.250 inches for electrical interfacing. Key electrical parameters include a minimum pull-in voltage of 16 VDC and a minimum release voltage of 3.6 VDC. The coil resistance is specified at 240 Ohms with a current draw of 100 mA. Mechanical operation times are 7 ms for both make and break actions. The unit supports switching voltages up to 14 VDC nominal and operates within a temperature range of -40°C to 125°C.

Feature Summary

• High current capacity rated at 20 A for demanding power applications
• Monostable coil design ensures reliable return to default state upon de-energization
• Wide operating temperature range suitable for harsh industrial environments

Applications

• HVAC system control circuits
• Appliance power management modules
• Industrial control panel switching

Procurement Notes

Verify component authenticity through authorized TE Connectivity channels or certified distributors. Confirm that the received units match the specific T9G series designation and terminal dimensions. Check for any relevant product change notices regarding manufacturing updates. Ensure storage conditions comply with manufacturer guidelines to maintain performance integrity before installation on printed circuit boards.

Selection Notes

Select this model when a high-current PCB-mounted solution is required for HVAC or appliance systems. The 20 A rating distinguishes it from lower-capacity signal relays. Ensure the available board space accommodates the physical footprint and that the 24 VDC control signal aligns with the system's logic levels. Verify that the quick-connect terminal style matches the existing harness or wiring infrastructure requirements.

Part Context

This component belongs to the T9G series of power relays manufactured by TE Connectivity Potter & Brumfield. The series is specifically engineered for high-current applications requiring robust PCB integration. It serves as a critical switching element in systems managing significant power loads, providing isolation between control circuits and high-power output stages in residential and commercial equipment.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.