Electronic Overload Relay

Start from the motor's full-load current on its nameplate, then apply the service factor and the ambient temperature at the starter. Choose a relay whose setting range brackets that current, and confirm the trip class suits the starting duty — Class 10 for normal starts, Class 20 or 30 for high-inertia loads.

IEC relays are compact, mount directly to a contactor and are selected by setting range and trip class. NEMA relays are typically larger, use interchangeable heater-free current transformers and are common in North American starter designs. Both are stocked here, so match whichever convention your panel drawings follow.

Yes — 3G Electric supplies worldwide from stock and through our supplier network. In-stock items ship quickly; non-stock or factory-order items carry lead times that vary by brand and current range. Send your part numbers or motor details and we will confirm availability and delivery before you commit.