Hioki CM4375 AC/DC Clamp meter

The Hioki CM4375 is a 1000A AC/DC true-RMS clamp meter that features a uniquely designed slim jaw that can easily get into the narrow gaps between cables in crowded electrical distribution boxes -- without fear of damaging the cables or the clamp meter. The broad -25 to 65°C operating temperature range and IP54 dustproof/waterproof enclosure enable professionals to work quickly in challenging situations, including the development, repair, and maintenance of equipment and devices such as electric vehicles. Additionally, the high-voltage DC measurement capability of up to 1700V is ideal for the clamp maintenance inspections of electrical and solar power equipment.

Made for Real-World Situations Uncompromising Design

Panel overcrowding is commonly found in many power distribution breakers and termination boxes. The newly designed thin sensor gets into even the most limited spaces. Eliminate the issues of trying to find the right wire or forcing the clamp around thick cables.

Damage-resistant jaws - Guaranteed for 30,000 open-close cycles

The new and improved design features stronger jaws (the current sensor portion of the instrument) and a dramatic boost in the duration of the warranty from 10,000 to 30,000 open-close cycles to ensure the instrument will provide even more years of reliable use. The CM4375 delivers the dual functionality of ease of clamping and resistance to damage.

Inrush (Rush current): Assess transient currents at motor startup

The CM4375 can simultaneously measure inrush current in RMS as well as maximum crest values at motor startup and for welding currents.

The clamp meter automatically detects the duration of the inrush current (which can range from several dozen milliseconds to several hundred milliseconds) and measures the current during that interval, enabling it to yield more accurate measurements than standard clamp-on meters whose measurement interval is fixed to 100 ms.

Use the inrush current feature for motor installation and maintenance to prevent circuit breakers from tripping, especially with high efficiency motors that have inrush current many times greater than the steady-state current of the motor.