Schneider D984-385 984 385D

The D984-385 is a low-voltage switchgear assembly belonging to the Schneider AEG product line, serving as a core component in power distribution systems below 3 kV. Renowned for its modular design, compact structure, and high reliability, this product is widely used in main distribution cabinets for industrial power distribution, building equipment rooms, energy stations, and large-scale commercial facilities.

Key Technical Specifications

• Rated voltage: 400 V / 690 V (380 V, 415 V, 440 V optional)
• Rated current: 63 A, 125 A, 200 A, 250 A (configurable upon demand)
• Rated short-circuit current: 25 kA (IEC 60947-2)
• Pole number: 3 P + N (4 P optional)
• Protection class: IP20 (internal); IP54 enclosure available as an option
• Operating temperature range: -25 °C – +55 °C
• Mounting methods: Wall-mounted, base-mounted, rail-mounted (modular)
• Compliance standards: IEC 60947-1/2/3, GB 50054, EN 60204-1, CE, UL

Structure and Components

• Main Cabinet Body: Steel or aluminum alloy enclosure, providing mechanical protection and grounding.
• Busbar System: Copper or aluminum busbars connected by crimping or bolting to ensure low impedance and high heat dissipation.
• Distribution Unit: Comprising circuit breakers, contactors, fuses, relay protection devices, etc., which can be freely combined according to circuit requirements.
• Control and Monitoring Modules: PLC, remote I/O, communication gateways, display panels, etc., enabling local or remote monitoring.
• Accessories: Lightning protection modules, overvoltage protection devices, temperature sensors, grounding bars, junction boxes, etc.

Typical Application Fields

• Industrial Power Distribution: Main distribution cabinets for large production lines, automated workshops, and robotic systems.
• Building Equipment Rooms: Power distribution and protection for data centers, communication base stations, and building automation systems.
• Energy Stations: DC/AC power distribution for photovoltaic inverter stations, wind power converter stations, and energy storage systems.
• Commercial Facilities: Centralized power distribution and backup power management for large shopping malls, hotels, and hospitals.

Installation Guidelines

1. On-Site Inspection: Verify that the ventilation, temperature, humidity, and dust-proof rating of the equipment room or power distribution room meet the requirements of IP20/IP54.
2. Foundation Fixation: Securely install the cabinet using bolts or a base, ensuring horizontal and vertical alignment to prevent mechanical vibration during operation.
3. Grounding: The main cabinet body, busbars, and metal accessories must be reliably grounded, with a grounding resistance ≤ 1 Ω.
4. Busbar Connection: When adopting crimping or bolting connections, ensure clean contact surfaces and that the tightening torque complies with the requirements specified in technical documents.
5. Circuit Wiring: Follow the IEC 60947-1/2 standards, keep phase lines, neutral lines, and protective lines separated, and avoid cross-connection and excessively long branch circuits.