Chint NH40-400/4CSW Manual Changeover Transfer Switch Disconnector – 400A, 4 Pole, With SHD

The Chint NH40-400/4CSW Manual Changeover Transfer Switch Disconnector (with SHD) is a 4-pole heavy-duty manual transfer switch designed for safe switching between two power sources, typically Utility and Generator supply. Rated at 400A, it is suitable for commercial buildings, industrial facilities, and medium-capacity distribution systems.

The NH40 series ensures secure isolation and reliable manual source selection through a clearly marked I-0-II operating position, preventing simultaneous connection of both power sources. The included SHD (external shaft handle device) allows safe front-panel operation when installed inside a switchboard or enclosure.

Key Technical Specifications:

• Model: NH40-400/4CSW

• Type: Manual Changeover Transfer Switch Disconnector

• Rated Current: 400A

• Poles: 4 Pole (3 Phase + Neutral)

• Operational Positions: I-0-II

• Rated Voltage: Up to 415V AC

• Frequency: 50/60Hz

• Mounting: Panel or enclosure mounted

• Accessory: SHD external operating handle

• Mechanical Durability: High switching endurance

• Application: Low-voltage power distribution systems

Features & Benefits:

• Safe manual transfer between two power supplies

• Positive mechanical interlock for source isolation

• Clear position indication (I-0-II)

• Robust contact system for reliable load switching

• Suitable for generator changeover systems

• Long mechanical and operational lifespan

• Easy integration into distribution boards and control panels

Typical Applications:

• Commercial buildings

• Industrial facilities

• Generator changeover panels

• Main distribution boards (MDB)

• Sub-distribution systems

• Power control panels

The Chint NH40-400/4CSW Manual Transfer Switch Disconnector provides secure, dependable, and durable manual power switching for medium-capacity installations.