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Electronic Overload Relay
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Pertanyaan yang Sering Diajukan
Pertanyaan umum tentang Electronic Overload Relay dari 3G Electric.
How do I size an electronic overload relay for a motor?
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.
What is the difference between IEC and NEMA electronic overload relays?
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.
Do you ship electronic overload relays worldwide, and what are lead times?
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.