Bender B98018006 Coupling Device

The AGH150W-4 coupling device (Part No. B98018006) from Bender is a high‑voltage accessory for ISOMETER insulation‑resistance monitors, designed to extend the nominal voltage range of ISOMETER iso685xx and IRDH series. It enables AC operation from 0 to 1150 V and DC operation from 0 to 1760 V for unearthed IT systems, with insulation rated at 1600 V DC and a 12 kV / 3 impulse withstand. The unit connects to the system under test via two poles and uses flat terminals; it interfaces with the ISOMETER through AK160 to AK or L1/L2/L3, enabling direct integration with common measurement configurations. The AGH150W‑4 supports DIN EN 45545-2 and DIN EN 50155 compliance and is documented in the D00093 datasheet for this variant. With the B98018006 designation, AGH150W-4 represents the higher‑voltage extension within the AGH150xx family, making it suitable for high‑voltage insulation monitoring in AC/DC IT networks where extended voltage ranges are required.