Bender Irdh275 Insulation Resistance & Differential Current Monitor | Irdh275-427
Bender IRDH275-427 is a high-performance insulation monitoring device designed for AC and DC systems. Features differential current measurement capabilities and advanced digital display technology.
The Bender IRDH275-427 Insulation Resistance and Differential Current Monitor represents advanced protection technology for ungrounded AC and DC electrical systems. This sophisticated monitoring device continuously supervises insulation resistance and provides early warning of insulation deterioration, helping prevent electrical faults and ensuring system reliability.
Engineered with precision measurement capabilities, the IRDH275-427 combines insulation monitoring with differential current detection in a single compact unit. The device features a clear digital display for real-time monitoring of insulation resistance values and system status, making it ideal for critical applications in healthcare, industrial facilities, and renewable energy installations.
Availability
In stock
This part is in stock at Z Power Electric and ships from our Calimesa, California warehouse.
Catalog pricing
Add this item to your cart or contact Z Power Electric for quantity pricing, lead-time support, and backorder recovery.
- 30-day returnsOn standard orders
- 24-hour quoteFrom our sourcing team

Quick facts
- Brand
- Bender
- Part number
- IRDH275-427
- Condition
- New
- Category
- Electrical Components
Also searched as
IRDH275 427 · IRDH275427 · Bender IRDH275
Product tags
Product overview
Built to meet stringent international standards, this monitoring device offers configurable alarm thresholds, multiple communication interfaces, and robust construction suitable for harsh industrial environments. The unit provides reliable continuous monitoring with minimal maintenance requirements, ensuring long-term operational safety and compliance with electrical safety regulations.
Specifications
- partNumber
- IRDH275-427
- mountingType
- DIN Rail
- displayType
- Digital LCD
- operatingVoltage
- AC 90-265V / DC 90-300V (verify)
- measurementRange
- 1kΩ to 100MΩ (approximate)
- responseTime
- < 5 seconds (typical)
- accuracy
- ±5% (typical)
- operatingTemperature
- -25°C to +70°C (approximate)
- protection
- IP40 (verify)
- dimensions
- approximately 90 x 70 x 65mm
- weight
- approximately 0.3kg
Key features
- Combined insulation resistance and differential current monitoring
- Digital display with real-time status indication
- Configurable alarm thresholds and response settings
- Multiple communication interface options
- Suitable for AC and DC ungrounded systems
- Compact DIN rail mounting design
Part number breakdown
IRDH275-427 Breakdown:
IRDH = Insulation Resistance Differential Current Monitor
275 = Series/Model designation indicating specific feature set
427 = Configuration code likely indicating voltage range, communication options, or regional specifications
Why buy from Z Power Electric
- Independent Sourcing — We source through independent channels to find parts others can't.
- Quality Assurance — Every part is inspected and verified before shipping.
- Fast Response — 24-hour quote turnaround on most requests.
- Global Reach — Serving maintenance teams and procurement managers worldwide.
Not what you're looking for? We source alternates, discontinued parts, and backordered inventory for urgent maintenance needs.
Request a quoteQuestions about this part
Can I still get a Bender IRDH275-427?
Z Power Electric sources the IRDH275-427 insulation monitoring device on request. Insulation monitors sit on ungrounded systems that cannot be taken down casually, so we quote the fastest confirmed source, not the cheapest unconfirmed one.
What is the difference between the IRDH275 variants?
The suffix after IRDH275 sets the supply voltage and measuring range. Sending us the full part number from the device you are replacing — including that suffix — is what lets us confirm an exact match instead of a family match.
Do you quote the current Bender replacement as well?
Yes, when you want it. We can quote the original IRDH275-427 and the current-generation Bender monitor side by side so the maintenance and capital cases can be compared on one document.
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