BENDER IRDH275-435 Insulation Monitoring Device

We will arrange delivery within 3-5 days after receiving the payment.

Our express delivery: DHL and FedEx.

Quality packing for each product

Destination country all taxes & duty to be paid by buyer

Only part of the brand and model, if you have other product needs, please contact us.

• • BENDER IRDH275-435 ISOMETER Insulation Monitoring Device

    Product Overview

    The BENDER IRDH275-435 is an ISOMETER insulation monitoring device designed for unearthed IT AC and DC power systems. It continuously monitors insulation resistance between the electrical system and earth, detecting insulation deterioration and ground faults before they develop into serious electrical failures.

    It supports AC systems up to 793 V and DC systems up to 650 V, with two independently adjustable alarm thresholds.

     

    ISOMETER® IRDH275+1

     

    Technical Specifications

    Parameter	Details
    Manufacturer	BENDER
    Model	IRDH275-435
    Product Series	ISOMETER
    Product Type	Insulation Monitoring Device
    Monitored System Voltage	0–793 VAC
    Monitored DC Voltage	0–650 VDC
    Supply Voltage	88–264 VAC / 77–286 VDC
    Supply Frequency	42–460 Hz
    Power Consumption	≤ 14 VA
    Insulation Resistance Range	1 kΩ–10 MΩ
    Alarm Channels	2
    Measuring Voltage	≤ 50 V
    Measuring Current	≤ 280 μA
    Relay Outputs	2 changeover contacts (SPDT)
    Relay Contact Rating	250 VAC / 300 VDC
    Switching Capacity	5 A
    Analog Output	0–400 μA
    Display	Backlit 2-line LCD
    Mounting	DIN Rail
    Protection Rating	IP30 (housing), IP20 (terminals)
    Operating Temperature	-10°C to +55°C

     

    ISOMETER® IRDH275+2

    Key Features

    • Continuous insulation resistance monitoring.

    • Suitable for AC, DC, and combined AC/DC IT systems.

    • Two independently adjustable insulation alarm thresholds.

    • Early detection of insulation deterioration and ground faults.

    • Integrated self-monitoring and fault indication.

    • Two configurable alarm relay outputs.

    • LCD display for insulation resistance readings.

    • Analog output for external measurement and monitoring.

    Applications

    • Industrial power distribution systems

    • Unearthed IT electrical networks

    • Industrial machinery and control panels

    • DC power supply systems

    • Renewable energy and electrical installations

    • Industrial automation and monitoring systems

    Important Notes

     

    • This device is designed for unearthed IT systems, not ordinary grounded TN or TT networks.

    • The "-435" version requires 88–264 VAC or 77–286 VDC auxiliary power.

    • For systems exceeding the rated monitoring voltage, compatible BENDER coupling devices may be required.

    • Verify the supply voltage and system configuration before installation.

The structure and details of the product：

 Please make an inquiry for more models

Bender IR470LY-40

Bender B94014002

Bender B73060002 CME420-D

Bender B93060002 CME420-D-2

Bender IR425-D4W-2

Bender IRDH575

Bender EDS490-D

Bender IR420-D4-1

Bender CRM470LY-13A

Bender WR70×175S

Bender SUR3537

Bender RCMA475LY

Bender WR150X350S

Bender W4-S140

Bender IRDH375-43

Bender IR140-4

Bender W3-S105

Bender RCM420-D-2 B94014002

Bender B91067020

Bender RCMS490

Bender ISOPV-335

Bender IRDH275B-425

Bender AGH422+ISOHV425

Bender RCMA420

Bender IR1570-435

Bender VMD421H-D-3

Bender COM465IP

Bender IR125Y-4 B91023005

Bender B91036401

Bender ISO685-S-B+FP200

Bender B91067230W

Bender B98080018

Bender EDS440

Bender W60 B98080018

Bender IR425-D4M1C-1

Bender WR70X175S

Bender RCM-470LY-13

Bender B91067110

Bender SUD140

Bender IRDH375BW-435

Bender IR475LY-4

  Other best-selling products：