Product Description
BENDER IRDH375-421 Insulation Monitoring Device
The BENDER IRDH375-421 ISOMETER is a high-performance insulation monitoring device designed for unearthed AC, AC/DC, and DC power systems (IT systems). It continuously monitors the insulation resistance to ground, providing early detection of insulation faults to enhance system reliability and prevent costly downtime. This device is particularly suitable for complex systems with variable-frequency drives, DC components, and high leakage capacitances. Manufactured in Germany by Bender GmbH & Co. KG, the IRDH375-421 ensures top-tier electrical safety and operational integrity for critical applications in industrial, renewable energy, and e-mobility sectors.
Technical Specifications:
- Response Value (Rmin): 1 kΩ…10 MΩ
- Measuring Voltage (Um): 350 V DC, 750 V DC, 0…850 V
- Supply Voltage (Us): AC 19.2…55 V / DC 19.2…72 V
- Power Consumption: < 2.5 VA / 5 A
- Changeover Contacts: 2 x 250 V / 5 A
- Relay Contacts: 1 x 250 V / 5 A
BENDER IRDH375-421 Insulation Monitoring Device
Shop the BENDER IRDH375-421 ISOMETER, a reliable insulation monitoring device for unearthed AC/DC and DC IT systems. Ensures electrical safety with a response range of 1 kΩ to 10 MΩ. Made in Germany.
