Overview:
The NXZM-250S/4B 200A is a compact, intelligent automatic transfer switch designed to ensure seamless power transition between utility and backup sources. With a 4-pole configuration and advanced protection features, it’s ideal for residential, commercial, and light industrial applications.

Technical Specifications:

• Brand: CHINT
• Model: NXZM-250S/4B
• Rated Current: 200A
• Poles: 4-pole
• Rated Voltage: 400VAC / 415VAC
• Control Voltage: 230VAC / 240VAC
• Frequency: 50/60Hz
• Breaking Capacity: 73.5kA
• Transfer Time: ≤3.3 seconds (±10%)
• Mechanical Endurance: 6,000 operations
• Electrical Endurance: 2,000 operations
• Mounting: Surface or DIN rail
• Connection: Flat-facing busbars
• Operating Temperature: -25°C to +70°C
• Enclosure Material: Flame-retardant plastic
• Certifications: IEC 60947-6-1, CE, CB, KEMA

Key Features:

• Intelligent controller (integrated or split installation)
• Automatic and manual switching modes
• Adjustable transfer and return delays
• Generator/grid interlock compatibility
• Fire control feedback and linkage
• Protection against overload, short circuit, overvoltage, undervoltage, and phase failure

Applications:

• Residential backup systems
• Commercial buildings
• Light industrial facilities
• Generator integration for critical loads

Would you like this version adapted into a Shopify product card or paired with a downloadable spec sheet? I can also help you create a side-by-side comparison with the 250A and 400A variants.