Bender RCMA475LY Residual Current Monitor 230VAC 30–500mA 18mm Sensor
BENDER · Sensors & Instrumentation
Description The Bender RCMA475LY Residual Current Monitor is a precision monitoring device designed to detect AC and DC residual currents in grounded electrical systems. It provides early fault detection to prevent insulation failures and system downtime. Technical Specifications Condition New/Never Used Surplus Brand Bender Category Power Monitoring Part Number RCMA475LY Subcategory Residual Current Monitors Product Type Residual Current Monitor Supply Voltage 230 VAC Response Current Range 30–500 mA Frequency Range 0–700 Hz Time Delay 0–10 seconds Sensor Type Internal Measuring Current Transformer Sensor Diameter 18 mm Monitoring Type AC/DC Sensitive Application TN and TT Systems Functionality Prewarning and Alarm Detection Weight 2.5 lb Information About RCMA475LY The RCMA475LY is part of Bender’s AC/DC sensitive residual current monitoring series, developed for TN and TT power systems where fault currents may occur. It utilizes an internal measuring current transformer with an 18 mm diameter for accurate current detection without dependence on system voltage. The device supports adjustable response values from 30 mA to 500 mA and operates across a wide frequency range up to 700 Hz. Designed for preventive maintenance and system safety, it enables early detection of insulation degradation and abnormal leakage currents. Key Features: AC/DC Residual Current Detection: Monitors AC, DC, and pulsed DC fault currents for comprehensive protection Adjustable Response Range: Configurable from 30 mA to 500 mA for flexible application settings Wide Frequency Operation: Supports monitoring across 0–700 Hz systems Internal Measuring Transformer: Integrated 18 mm diameter sensor simplifies installation Adjustable Time Delay: Configurable delay from 0 to 10 seconds for selective tripping Prewarning and Alarm Levels: Dual-stage monitoring enables early fault indication Industrial Application Design: Suitable for converters, UPS systems, and variable-speed drives Fault Memory and Reset Function: Stores alarms and allows manual reset for system diagnostics The RCMA475LY delivers the reliability and precision required for residual current monitoring and electrical fault detection in industrial power systems.
Brand: BENDER · Category: Sensors & Instrumentation
Key features
- AC/DC Residual Current Detection: Monitors AC, DC, and pulsed DC fault currents for comprehensive protection
- Adjustable Response Range: Configurable from 30 mA to 500 mA for flexible application settings
- Wide Frequency Operation: Supports monitoring across 0–700 Hz systems
- Internal Measuring Transformer: Integrated 18 mm diameter sensor simplifies installation
- Adjustable Time Delay: Configurable delay from 0 to 10 seconds for selective tripping
- Prewarning and Alarm Levels: Dual-stage monitoring enables early fault indication
- Industrial Application Design: Suitable for converters, UPS systems, and variable-speed drives
- Fault Memory and Reset Function: Stores alarms and allows manual reset for system diagnostics
Specifications
| Manufacturer part number | RCMA475LY |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Bender |
| Category | Power Monitoring |
| Part Number | RCMA475LY |
| Subcategory | Residual Current Monitors |
| Product Type | Residual Current Monitor |
| Supply Voltage | 230 VAC |
| Response Current Range | 30–500 mA |
| Frequency Range | 0–700 Hz |
| Time Delay | 0–10 seconds |
| Sensor Type | Internal Measuring Current Transformer |
| Sensor Diameter | 18 mm |
| Monitoring Type | AC/DC Sensitive |
| Application | TN and TT Systems |
| Functionality | Prewarning and Alarm Detection |
| Weight | 2.5 lb |
| Product type | Residual Current Monitors |
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