CZ-3A0X SERIES CORELESS CURRENT SENSORS

AKM’s coreless current sensors are high-accuracy and achieve both creepage and clearance distance

CZ-3A0X SERIES CORELESS CURRENT SENSORS

Corresponding to the UL safety standard UL61800-5-1 for industrial equipment, AKM has developed the CZ-3A0x series coreless current sensor which achieves both creepage distance and clearance distance greater than 8 mm. It supports a working voltage of 600 VRMS (with reinforced insulation), making insulation design easy. With a wide current detection lineup from ±12.9 APP to ±129.1 APP, 50 ARMS, and two overcurrent protection circuits, the CZ-3A0x series can be used for many applications including AC motors and general-purpose inverters.

The CZ-3A0x series has a low resistance of 0.27 mΩ as the primary conductor resistance with AKM’s original package. As a result, compared to shunt resistors and similar products of other companies, heat generation when applying the current can be greatly suppressed, and 50 ARMS continuous current can be applied. Furthermore, availability with wide current detection ranges from ±12.9 APP (CZ-3A01) to ±129.1 APP (CZ-3A07) are achieved. This enables the adoption of common design of system boards, making it easy to roll it out to other models with different ratings.

In addition, it is suitable for a sensor signal input to a 3.3 V A/D converter in a 3.3 V input system. It has a built-in stray magnetic field reduction function, a challenge for conventional coreless current sensors, contributing to the improvement of system efficiency and precise control in a wide range of applications.

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