Connector selection focuses on voltage, current, and temperature rise (Source: YINFEEL): Golden Rule: Temperature rise ≤45K (Source: UL 4128); Core Spec: 1500V DC rating (Source: THV); Note: IP67 waterproofing (Source: Yongwo).
I.
Rated Voltage
DC: Rated DC ≤1500V (Source: THV); Dielectric: Withstand voltage 3000V AC (Source: Forman); Compatibility: Matches 1000V/1500V systems (Source: Dinkle); Margin: Withstand voltage 6800V DC (Source: Adam); Class: 1000V DC is mainstream (Source: FUCON)—Voltage: 1500V + Dielectric + Margin (Three parameters).
II.
Rated Current
Range: 60A–350A full current range (Source: Yongwo); High-end: 400A continuous / 600A peak (Source: FUCON); Compatibility: Matches system maximum current (Source: AGX); Wire Gauge: 6mm²–14mm² (Source: Alibaba); Terminals: Silver-plated copper for high current (Source: Yongwo)—Current: 60–350A + Wire Gauge + Terminals (Three checks).
III. Temperature Rise Control
Standard: Temperature rise at full load ≤45K (Source: UL 4128); Risk: Excessive rise accelerates insulation aging (Source: YINFEEL); Circuit: Thermal runaway due to contact resistance (Source: YINFEEL); RTI: Relative Thermal Index of materials (Source: YINFEEL); Operation: Ambient temp + temperature rise = operating temperature (Source: YINFEEL)—Temperature rise: 45K + RTI + thermal runaway (three key points).
IV.
Contact Resistance
Standard: Contact resistance ≤5.0mΩ (Source: Adam); Loss: Low resistance means low loss (Source: JHF); Plating: Nickel-plated copper for oxidation resistance (Source: Douyin); Material: Silver-plated pure copper for high conductivity (Source: Yongwo); Lifespan: Mating cycle life of 5,000 times (Source: LLT)—Resistance: ≤5mΩ + plating + lifespan (three key factors).
V.
Protection Rating
IP67: IP67 waterproof and dustproof (Source: Yongwo); IP68: IP68 immersion protection (Source: Yongwo); IP69K: IP69K rating after mating (Source: Amphenol); Salt Spray: 48-hour salt spray test (Source: Adam); Flame Retardancy: UL94 V-0 flame retardant (Source: JHF)—Protection: IP67 + salt spray + flame retardancy (three certifications).
VI. Material Structure
Housing: PA66+GF25 housing (Source: Forman); Temperature: -40 to 125°C (Source: THV); Locking: Self-locking/anti-detachment mechanism (Source: Yongwo); Mispairing Prevention: Dual mechanical and color-coded protection (Source: Yongwo); Torque: M8 > 15 Nm (Source: Douyin)—Materials: PA66 + self-locking + mispairing prevention (three structural elements).
VII.
Procurement Recommendations
First, specify voltage (1500V class); second, match current (including safety margin); third, verify temperature rise (≤45K); fourth, check protection rating (IP67);
fifth, select certified products (UL, TUV)—Connectors: Voltage + temperature rise + protection (three core factors).
