Purpose-Built Configuration for Three-Phase Infrastructures
The Switch Terminal 400 Frame 3x16 is a heavy-duty three-pole power termination module developed exclusively for traditional three-phase industrial networks (L1, L2, L3) running through 400A frame switches, load break isolators, and manual changeover systems. Managing three separate heavy phases within a high-density panel board typically results in erratic wiring paths and messy cable bundling. This unit solves the bottleneck by combining three high-current terminals into a single neat assembly, delivering organized line grouping on both the supply and load sides of multi-megawatt industrial manufacturing lines and high-capacity solar AC inverter combiners.
Anti-Arcing Separation & High-Voltage Dielectric Safety
≥8mm Phase-to-Phase Creepage Barriers: Built with physical non-conductive phase separators that guarantee an electrical isolation and clearance distance of ≥8mm between adjacent poles. This prevents high-voltage air arcing and transient phase short circuits during lightning strikes or grid fault surges.
Premium Insulation Breakdown Strength: The specialized PA66 base provides high dielectric protection, maintaining absolute phase independence under continuous high-amperage demands.
Secure Universal Wire Accommodations: Machined to clamp conductors from 10mm² to 16mm² per pole, enabling precise cable selection that matches the exact ampacity thresholds of modern 400A circuit switches.
Technical Parameters
| Compatible Switch Type | 400A frame three-pole isolation, load break, or transfer switch |
| Compatible Switch Width | Approx. 108mm |
| Poles/Ways | 3 independent (L1, L2, L3) |
| Wire Range | 10-16mm² copper per pole |
| Rated Voltage | 690V / 1000V three-phase AC |
| System Current Rating | 400A evenly across phases |
| Contact Resistance | ≤0.25 mΩ (per pole) |
| Dielectric Strength | ≥2.5kV phase-to-phase |
| Phase-to-phase Isolation | ≥8mm creepage distance |
| Torque Rating | ≥4.0 N·m |
| Terminal Type | Heavy-duty tubular screw or bolt type |
| Housing Material | Reinforced PA66, V-0 flame rating |
| Cover Material | Transparent polycarbonate with phase labels |
| Protection Rating | IP20 |
| Mounting Method | DIN rail or base plate screw fixing |
| Operating Temperature | -40°C to +105°C |
| Space Saving | Approx. 45% vs. three separate terminals |
| Standards Compliance | IEC 60999-1, GB/T 14048.7, CE, CCC, RoHS |
Quantifiable Panel Efficiency & Resource Conservation
45% Internal Volumetric Panel Savings: Consolidating three independent single-pole distribution blocks into this unified layout saves roughly 45% of total panel space, leaving valuable space for diagnostic relays or cooling equipment.
40% Lower Field Interconnection Labor Cost: The integrated 3-phase configuration eliminates the hassle of manually spacing out multiple terminals, allowing technicians to speed through panel assembly and cut wiring labor hours by a verified 40%.
Long-Term Reliability & Field Inspection Utility
Equipped with permanent, bold laser-etched markings for L1, L2, and L3, this terminal block completely removes the chance of human phase-reversal mistakes during initial commissioning or field service. The internal busbar features exceptionally low contact resistance (≤0.25 mΩ), maintaining a cool system run that extends the life of nearby automation electronics. The protective transparent lid allows visual confirmation of wire entry depth, making routine site safety audits quick and hassle-free.
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