Phase sequence indicator PH-12 NTRN12000

Phase Control and Installation Safety

The PH-12 phase indicator is a reliable device designed for quick and precise checking of voltage presence in three-phase AC networks. Its main task is to visualize the availability of individual phases relative to the neutral conductor, which significantly facilitates diagnostics and ensures safety during installation and maintenance work.

Functionality and application

PH-12 is particularly useful during:

• Verifying the correct operation of the electrical installation after connection or repair.
• Locating breaks in power circuits.
• Checking for voltage presence before starting maintenance work.
• Quickly identifying phases in sockets or junction boxes.

The device indicates the presence of voltage using clear LED indicators, allowing for intuitive assessment of the installation status even in difficult lighting conditions. Compact dimensions (18 mm width – 1 DIN) allow mounting in tight switchboards and control cabinets.

Design and product features

PH-12 is made of self-extinguishing plastic, which increases safety in case of short circuit or overheating. The use of LEDs as a signaling element ensures long life and low energy consumption (0.5W). The device is designed for mounting on a DIN rail, which facilitates its integration with the existing electrical infrastructure. It has 4 connection terminals, and its housing measures 90x18x64.5mm. Suitable for operation in temperatures from -30°C to +55°C. Protection class IP20 on the terminal side and IP40 provides protection against accidental contact and ingress of solid objects. Insulation voltage is 450V AC. The device is designed for 3x400V AC networks.