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The THOMAS BETTS 18RA-2577C is a fully insulated female wire disconnect designed for quick-connect wiring terminations in electrical and low-voltage control circuits. Sized for 22-18 AWG conductors, it accepts a 0.25 inch tab and features a red nylon insulation sleeve that provides full coverage over the terminal barrel. The nylon construction meets UL 94 V-2 flame rating requirements, making it suitable for environments where basic flame retardance is required. Electricians and control-wiring technicians use these terminals to create reliable, removable connections on spade-tab components such as relays, switches, and control boards. Sold in a package quantity of 100.
This disconnect terminal is appropriate for residential and light commercial electrical work, including HVAC control wiring, appliance wiring, automotive electrical, and panel accessory connections. It is intended for use wherever a 0.25 inch female spade disconnect is required on 22-18 AWG wire. The red color coding helps technicians quickly identify wire gauge range during installation and service. Typical applications include relay coil leads, fan motor speed terminals, and low-voltage control board wiring.
Designed for use with standard 0.25 inch spade tab components accepting 22-18 AWG fully insulated female disconnects, including relays, rocker switches, and control board terminals commonly found in HVAC, electrical, and appliance applications.
Installation is performed by electricians or qualified control-wiring technicians using an appropriate ratcheting crimp tool rated for insulated terminals in the 22-18 AWG range. Always de-energize and lock out the circuit before terminating or removing wire disconnects. Inspect the crimped barrel to confirm full wire insertion and a secure mechanical connection before restoring power. Follow applicable NEC requirements for terminal and wiring methods in the specific installation environment.
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