✅ No external power needed – self-powered by the monitored current. ✅ Compact size – fits in crowded control boxes. ✅ Fixed or adjustable trip points (depending on variant). ✅ Great for retrofitting older equipment with modern safety features.
❌ Not always clearly labeled – “Nash CL3002” might be obsolete or rebranded. ❌ Sensitive to harmonics or noisy loads – can false-trip. ❌ Replacement can be tricky – often discontinued, leading to cross-referencing headaches. ❌ Manuals are scarce – you’ll rely on wiring diagrams from the original equipment. nash cl3002
The CL3002 is a current-sensing relay (or sometimes a load controller) designed by Nash (often associated with Nash Electrical Components or rebranded for HVAC/R applications). Its job is simple but critical: monitor electrical current flowing to a load (like a compressor or fan motor) and switch a separate control circuit based on that current. ✅ No external power needed – self-powered by
Think of it as a for motors. When the motor draws current (i.e., it’s running), the CL3002 closes a set of dry contacts, allowing low-voltage control signals to pass. When the motor stops or fails, the relay opens—sending an alert or shutting down a system to prevent damage. ✅ Great for retrofitting older equipment with modern
If you’ve ever peeked inside a commercial dehumidifier, air handler, or HVAC control panel, you might have spotted a small, unassuming component labeled Nash CL3002 . At first glance, it looks like just another relay or controller. But ask anyone who’s dealt with a malfunctioning unit on a 95°F day, and they’ll tell you: this little guy matters.