**Product Information:** - **Model No.:** NBC(KR) - **Trademark:** SANYU - **Specification:** CE, ISO, SGS, CCC - **Origin:** Shanghai - **HS Code:** 893012 **Main Features:** 1. Offers superior performance and functionality compared to standard thyristor welders. 2. Equipped with a wireless remote control for enhanced maneuverability and reduced wire disconnection issues. 3. Features a new design that improves dust resistance, making it suitable for a wider range of applications. 4. Allows separate adjustment of current and voltage, with a simple and effective synergy system. This welding machine is ideal for both beginners and experienced users. The NB-KR series has a modular structure, consisting of a welding power source that includes components such as an AC contactor, air-cooling fan, three-phase transformer, thyristor rectifier module, parallel reactor, control transformer, master control electronic circuit, and filter reactor. **Technical Specifications:** | Item/Model | KR-200 | KR-350 | KR-500 | KR-600 (630) | |------------|--------|--------|--------|--------------| | Rated Input Power Voltage (V) | 3~380 | 3~380 | 3~380 | 3~380 | | Frequency (Hz) | 50/60 | 50/60 | 50/60 | 50/60 | | Rated Input Power Capacity (KVA) | 7.6 | 18.1 | 31.9 | 45 | | No-load Voltage (V) | 35 | 52 | 62 | 70 | | Rated Output Current (A) | 200 | 350 | 500 | 630 | | Rated Duty Cycle (%) | 60% | 60% | 60% | 60% | | Output Current Range (A) | 40–220 | 60–370 | 80–570 | 80–630 | | Output Voltage Range (V) | 16–25 | 17–32.5 | 18–42.5 | 18–44 | | Wire Diameter Suitable (mm) | φ 0.8–φ 1.2 | φ 0.8–φ 1.2 | φ 1.2–φ 1.6 | φ 1.2–φ 2.0 | | Insulation Class | H | H | H | H | | Exterior Size (mm) | 675×390×765 | 675×390×765 | 675×440×780 | 725×460×790 | | Weight (kg) | 109 | 128 | 158 | 200 | The NB-KR series is designed for efficiency, reliability, and versatility in various industrial welding environments. Its advanced features make it a top choice for professionals looking for high-quality and durable welding equipment. Whether you're working on small projects or large-scale production, this series offers the flexibility and performance needed to meet your welding demands.

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