Intermatic AG3000 Surge Protector 321142-301 G-2010-101 is the direct replacement

G-2010-101 is the direct replacement for 2420-005

While the 1/2" NPT threading is standard

What is the primary application for the 5140C

the internal ECM module has likely failed

As a critical component for building automation and climate control

Intermatic AG3000 Surge Protector 321142-301 G-2010-101 is the direct replacementProtect your vital mechanical assets and electronic components from transient voltage spikes with the Intermatic AG3000 Surge Protector. This heavy duty HVAC surge protective device is engineered specifically for the electrical demands of residential and light commercial systems, including central air conditioners, high efficiency furnaces, heat pumps, and ductless mini splits. Unlike standard varistors that can pose a fire risk upon failure, this