Product Overview
The Bender RCMA472LY-21 is an AC/DC sensitive residual current monitor (Type B) compliant with IEC 62020-1, designed for earthed power systems (TN and TT systems). It detects and evaluates AC, pulsating DC, and smooth DC residual currents, providing comprehensive leakage protection for modern electrical systems. The device features two separately adjustable response values (pre-alarm and main alarm), enabling proactive maintenance planning and preventing unexpected downtime, thereby enhancing operational safety and system availability.
Key Specifications
Brand: BENDER (Germany)
Model: RCMA472LY-21
Product Type: AC/DC sensitive residual current monitor (Type B), compliant with IEC 62020-1
Response Value Range: 10 mA to 10 A (two separately adjustable response values)
Frequency Range: 0 to 2000 Hz
Supply Voltage: AC/DC 24 V to 240 V, 50 to 400 Hz
Output: 2 alarm relay outputs (2 x 1 changeover contact)
Operating Temperature: -25°C to +55°C
Mounting: DIN rail mounting
Weight: Approx. 0.3 kg
Origin: Germany
Main Applications
· Frequency Converters – Detects smooth DC fault currents generated by variable frequency drives
· UPS Systems – Ensures electrical safety for uninterruptible power supplies
· Battery Chargers – Monitors residual current during charging processes
· EV Charging Infrastructure – Ensures safety during electric vehicle charging
· Industrial Equipment – Fault current monitoring for various industrial and commercial applications
Key Features
· Type B Full Spectrum Detection: Detects AC, pulsating DC, and smooth DC residual currents, meeting the demands of modern power systems
· Wide Frequency Range: 0 to 2000 Hz frequency range, suitable for variable frequency drive systems
· Wide Voltage Supply: AC/DC 24 V to 240 V universal wide-range input
· DIN Rail Mounting: Standard industrial mounting method for easy integration into control cabinets
· Dual Alarm Thresholds: Two separately adjustable response values support pre-alarm and main alarm two-level protection
· High Reliability: Designed for residual current monitoring in earthed systems (TN/TT systems), providing early fault warning
Translation missing: en.general.search.loading