BENDER IRDH275-415 Insulation Monitoring Device
Bender IRDH275-415 ISOMETER® for advanced insulation monitoring in AC and DC IT systems. Ensures electrical safety with a wide voltage range and an adjustable response value from 1 kΩ to 10 MΩ.
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BENDER IRDH275-415 Insulation Monitoring Device
The BENDER ISOMETER® IRDH275-415 is a high-performance insulation monitoring device (IMD) engineered for unearthed AC, 3(N)AC, and DC power systems (IT systems). It provides continuous monitoring of insulation resistance to detect faults at an early stage, significantly enhancing electrical safety and preventing costly operational downtimes. Featuring the advanced AMPPlus measurement principle, this device ensures precise and reliable performance even in systems with high leakage capacitances or connected to variable frequency drives. With a wide voltage range, configurable alarm setpoints, and a clear LCD display, the IRDH275-415 is a versatile and essential component for critical applications in industrial plants, healthcare facilities, and renewable energy installations.
Technical Specifications:
- Model: IRDH275-415
- Response Value (Ran): 1 kΩ…10 MΩ
- Rated Voltage (Un): 3AC/AC 0…793 V / DC 0…650 V
- Supply Voltage (Us): AC 340…460 V, 42…460 Hz
- Power Consumption: ≤ 14 VA
- Relay Contacts: AC 250 V, 5 A
- Certifications: CE, cULus Listed, Lloyd’s Register

| Brand | BENDER |
|---|---|
| Model | IRDH275-415 |
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Shipping policy
If you are buying multiple items, please contact us before checking out so we can get you the best combined rate for shipping.
Our default shipping rate is $100, which is enough to cover the cost of most shipments, but it is not our expected shipping rate. Due to the varying weights and sizes of products and customer locations, please contact us with your location and the products you are interested in to get the best current shipping rates.
ENERAL DELIVERY INFORMATION
Orders will be processed and shipping during standard working hours (0830 – 1700 GMT+8) Monday to Friday (excluding Bank Holidays)
On rare occasions, your order may be handled and/or processed on a Saturday. However, we are unable to ship items on weekends, therefore any orders dealt with on the weekend will be send out the next following working day.
The cut-off point for orders to be shipped the same day is 14:00 – please contact us to confirm stock levels before placing your order
Any orders placed after the cut-off will ship the next working day assuming all parts are in stock and ready for dispatch.
All orders:
- must be paid for in full before any goods are dispatched
- require a signature upon delivery. Please ensure delivery can be made to an address where someone will be available to sign for the delivery
- are packaged with great care, ensuring your order and the contents it contains, makes it safely through the delivery network

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