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The PT 3-HF-12DC-ST surge protection plug serves as a vital component for base elements, offering robust protection against voltage surges. It features normal mode protection for two floating signal wires alongside grounding, ensuring reliable operation in IT environments. Additionally, it includes coarse protection against common mode voltage to ground.

With a nominal voltage of 12 V DC, this device is constructed to meet stringent performance standards. The surge protection plug is designed to handle a maximum continuous operating voltage of 14 V DC and a rated current of 450 mA at 45 °C. The connection method employs screw connections, accommodating flexible conductors ranging from 0.2 mm² to 2.5 mm² and rigid conductors up to 4 mm².

This product demonstrates impressive surge ratings, with a nominal discharge current of 10 kA for line-to-line and line-to-ground configurations. Its voltage protection levels do not exceed 50 V for various configurations, ensuring minimal residual voltage. The device operates effectively within a temperature range of -40 °C to 85 °C, making it suitable for diverse environmental conditions.

Compliance with international standards such as DIN EN 61664-1 and IEC 60664-1 underscores the reliability of this surge protection solution. Furthermore, the degree of protection is rated at IP20, confirming its suitability for indoor applications.