Product Introduction
High-power industrial electronic components such as IGBTs and MOSFETs require immediate protection against destructive lightning surges and grid transients. This Three Phase Clearance Connector 80A functions as a specialized, high-capacity surge protection terminal block block. Continuously handling an 80A current load at 440VAC line-to-line, this device combines high-energy surge absorption and large-gauge distribution terminals into one block, lowering installation labor hours and minimizing downtime.
Core Technical Edge
Upgraded Bulletproof Material Matrix: Utilizing a premium high-molecular polymer polycarbonate injection framework, the housing delivers maximum structural toughness. It is completely non-hygroscopic to prevent mildew and tracking, resolving the brittle fracture faults seen in older terminal materials.
High-Energy Surge Clamping: Equipped with a dense MOV assembly that safely handles a nominal impulse current of 15kA (8/20µs) per phase, with an upgraded 25kA option available for lightning-prone installations. It restricts residual voltage to ≤1200V line-to-line at a 6kV/3kA wave.
Fail-Safe Isolated Thermal Links: Each phase is isolated by an independent thermal link that acts immediately if a varistor undergoes severe degradation. A clear visual status indicator pops up to show which phase needs maintenance without disturbing the main line wiring.
Universal Combo Screw Ports: The wiring entries utilize a patented composite combination slot screw layout. This gives field crews maximum tool flexibility, ensuring high-torque, vibration-proof contact pressure using either cross-point or straight screwdrivers.
Technical Parameters
| Parameter | Value |
| Rated Continuous Current | 80A |
| Rated Voltage (L‑N / L‑G) | 275VAC |
| Rated Voltage (L‑L) | 440VAC |
| Protection Modes | L‑N, L‑PE (per phase); optional N‑PE |
| Surge Protection Category | Type 2 (IEC 61643‑11) |
| 8/20µs Impulse Current (Iimp) | 15kA per phase (25kA optional) |
| Combination Wave (6kV/3kA) Residual Voltage | ≤1200V (L‑L), ≤1000V (L‑G) |
| Response Time | ≤25 ns |
| Thermal Disconnector | Per phase, independent, with visual indicator (red when failed) |
| Wire Range (copper) | 16mm² – 35mm² (6‑2 AWG) |
| Terminal Type | Tubular screw (torque ≥2.0 N·m) |
| Temperature Rise @80A | ≤45K (25°C ambient, natural cooling) |
| Housing Material | PC |
| Operating Temperature | -40°C ~ +85°C |
| Storage Temperature | -40°C ~ +105°C |
| Mounting | Panel mount (screw) recommended; optional DIN rail adapter |
| Dimensions (typical) | 190×135×70mm (varies by model) |
| Certifications | CE, TUV, RoHS, IEC 61643‑11 |
Strategic Application Scenarios
This 80A clearance unit is widely utilized in utility-scale solar farms, remote wind turbine nacelles, and heavy industrial automation cabinets. Designed to accept heavy 16mm² to 35mm² copper wires, it easily withstands demanding environments with an operational temperature range of -40°C to +85°C.
Quality & Compliance Standard
Built in compliance with international CE, TUV, and IEC 61643-11 standards, this patented surge protective block ensures uniform quality across large distribution networks. Its high insulation resistance (>30MΩ) and rugged metal-to-metal bonding paths eliminate tracking hazards and arcing accidents.
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