Product Overview
The Switch Terminal 400 Frame 2x25 is an elite, high-amperage two-pole connection block custom-engineered to line up directly with the physical termination layout of standard 400A frame two-pole switches. In high-power industrial control cabinets, forcing mismatched cables into restricted breaker ports introduces extreme physical strain on the switch chassis. This hardware completely eliminates that engineering hazard by acting as a perfectly calibrated geometric extension. It establishes a highly reliable, low-impedance interface that is ideal for large DC photovoltaic combiners, heavy-duty battery storage modules, and high-current single-phase commercial auxiliary distribution panelboard applications.
Core Electrical Performance & Ampacity Guarding
Optimized Large Conductive Cross-Sections: The internal termination sleeves are specially machined to accept heavy copper wires ranging from 16mm² to 25mm². This ensures that the high continuous thermal capacity required for 400A infrastructure is delivered smoothly without choking the current path.
Controlled Temperature Rise Profiles: Utilizing thick, high-purity tin-plated copper busbars, the internal junction assembly restrains total localized temperature rise to under 35K under continuous full-load delivery, preventing heat dissipation to adjacent electronic modules.
Dual AC and DC Network Integration: Engineered to manage both alternating and direct current topologies, it offers universal compatibility across green energy storage banks and traditional power grids.
Technical Parameters
| Compatible Switch Type | 400A frame isolation, load break, or transfer switches (2-pole) |
| Compatible Switch Width | Approx. 72mm |
| Number of Ways/Poles | 2 independent terminals |
| Wire Range | 16-25mm² copper |
| Rated Voltage | 690V / 1000V AC |
| Rated Current | 400A |
| Contact Resistance | ≤0.25 mΩ |
| Dielectric Strength | ≥2.5kV / 1min |
| 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 labels |
| Protection Rating | IP20 |
| Mounting Method | DIN rail (35mm) or base plate screw fixing |
| Operating Temperature | -40°C to +105°C |
| Space Saving | Approximately 40% |
| Standards Compliance | IEC 60999-1, GB/T 14048.7, CE, CCC, RoHS |
Measurable Panel Space & Assembly Optimization
40% Cabinet Footprint Reclamation: By integrating separate termination points into a single dual-pole enclosure, panel builders can reclaim approximately 40% of horizontal and vertical panel space compared to conventional layouts.
35% Reduction in Field Installation Labor: The pre-configured 2-pole framework mounts directly onto standard 35mm DIN rails or heavy backplates right next to the switch body, cutting field wiring hours by about 35% and drastically reducing overhead.
Mechanical Stress Durability & Maintenance Operations
The outer chassis is molded from specialized, reinforced PA66 insulation material that easily withstands heavy continuous vibrations, impact shocks, and severe thermal expansions. Fitted with a high-clearance transparent polycarbonate safety cover, maintenance crews can execute quick infrared thermal monitoring without removing the shield. The heavy-duty bolt terminals provide high torque sealing, preventing long-term material creeping and eliminating the necessity for periodic retightening schedules.
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