NLQ1 intelligent dual power automatic transfer switch Model examples: 2P 40A, 2P 63A. Unit weight: 1.5 kg. Key benefits Ensures continuous power by automatically switching to a backup supply or generator when the primary supply fails. Provides selectable automatic or manual transfer, giving operators control when needed. Builtin protection against overload, undervoltage, short circuit, and phase failure to protect connected equipment. Retains circuit breaker protection functions during transfer, allowing the device to make, break, and protect the main circuit. Main specifications Suitable for dual power systems with AC 50/60 Hz. Rated operating voltage up to 400 V. Rated current range 16 to 1250 A, available in compact 2P variants such as 40 A and 63 A for smaller installations. Singlephase 220 V household mini ATS option for residential applications. Unit weight approximately 1.5 kg for compact models. Design and components Consists of two power conversion execution circuit breakers (common supply breaker QN and backup supply breaker QR), an automatic control box, and an electric operating mechanism. Both execution breakers maintain independent overcurrent and circuit breaker protection while coordinating for safe transfer. Robust mechanical and electrical linkage ensures reliable switching without interrupting protection functions. Operation and installation Automatic transfer occurs when the device detects primary supply failure; it can also perform manual transfers for maintenance or testing. Compact sizes are suitable for panel mounting or integration into existing distribution boards. Simple wiring layout separates common and backup supply inputs and maintains protection circuits; installation and commissioning should follow local electrical codes and be performed by qualified personnel. Typical applications Critical infrastructure such as hospitals, fire protection systems, and airports. Commercial facilities including shopping malls, TV stations, and banks. Industrial sites such as chemical plants, metallurgy facilities, and rise buildings where uninterrupted power is required. Why choose this transfer switch Reliable automatic switching combined with preserved circuit protection. Flexible configurations from compact household mini ATS to higher rated units for industrial use. Clear, serviceable design that supports routine testing and maintenance without compromising safety.