Bender RCMA470LY-21 Residual Current Monitor
1. Product Overview
Model: Bender RCMA470LY-21 (high-precision residual current monitoring device)
Type: Multifunctional residual current monitoring device, dedicated to leakage protection of AC/DC systems
Product Series: Bender RCMA400 series industrial monitors
Typical applications:
Industrial power distribution systems (manufacturing plants, data centers)
Medical IT systems (critical areas such as operating rooms, ICUs, etc.)
Renewable energy systems (photovoltaic inverters, energy storage systems)
2. Core functional characteristics
Monitoring range:
AC system: 0-500mA AC (adjustable range)
DC system: 0-1000mA DC (adjustable range)
Frequency range: DC-10kHz (suitable for inverter environment)
Measurement accuracy:
Basic accuracy: ±1% reading ±0.1mA (at 25°C)
Full temperature range accuracy: ±2% reading (-25°C to +60°C)
Alarm function:
4 levels of programmable alarm thresholds (warning, alarm 1, alarm 2, emergency)
Each level of alarm can be set independently with delay (adjustable from 0-60s)
3. Advanced technical specifications
Communication interface:
Standard: RS-485 Modbus RTU
Optional: Ethernet TCP/IP (specify model suffix)
Support Bender Power Monitoring Software
Output configuration:
2 relay outputs (5A/250VAC, SPDT)
1 analog output (4-20mA/0-10V optional)
Power requirements:
Operating voltage: 24VDC±10% or 110-230VAC±15%
Power consumption: <5W (typical value)
4. Mechanical and environmental characteristics
Installation method:
35mm standard DIN rail installation
Front wiring design (easy maintenance)
Protection level:
Front panel: IP54 (dust and splash proof)
Overall: IP20 (needs to be installed in the control cabinet)
Environmental adaptability:
Operating temperature: -25°C to +60°C
Storage temperature: -40°C to +85°C
Humidity: 5-95%RH (no condensation)