New unused old stock. Siemens Model ND63T100 Circuit Breaker Trip Unit EE2281
Other components in Electrical & Electronic Components cover miscellaneous parts that support a machine’s electrical system: sensors, control modules, wiring harnesses, relays, connectors, displays, CAN/CAT bus modules and small PLCs. These items are used for repairs, retrofits or upgrades on crawler loaders and similar equipment. Buyers should check compatibility, part numbers and condition—many parts are sold as OEM, aftermarket or refurbished to balance cost and reliability.
Verify machine make, model and year, match OEM part numbers, inspect condition (new, used, refurbished), confirm firmware version and compatibility with existing control systems, and ask about return or warranty terms.
Ship in anti‑static packaging and padded crates, secure against moisture and vibration, use temperature‑controlled transport if needed, insure the shipment, and choose a carrier experienced with heavy equipment parts.
Perform regular visual inspections, clean and tighten connections, check wiring harnesses for abrasion, update firmware and run diagnostic tools, replace corroded connectors, and consult the service manual or a qualified technician for complex faults.