Schneider Electric ACE949-2 is a high-performance RS485 communication interface designed for Sepam Series 20, 40, 60, and 80 digital protection relays. Featuring Modbus RTU protocol support over E-LAN and S-LAN, this module ensures seamless integration of Sepam devices into your monitoring and control systems. With a wide supply voltage range of 12/24V DC, robust mechanical resistance, and LED status indication, it is ideal for industrial applications demanding reliability and clear communication.

Product Type: Digital Protection Relay
Model: Sepam S82
Application: Substation and industrial distribution protection
Manufacturer: Schneider Electric

Protection Functions:
Phase Overcurrent (50/51)
Ground Overcurrent (50N/51N)
Negative Sequence Overcurrent (46)
Thermal Overload Protection (49)
Breaker Failure Protection (BF)
Remote Trip Function (RTr)

Measurement & Metering:
RMS current measurement for each phase and neutral
Peak demand metering
Real-time and historical fault records

Control Capabilities:
Trip commands to circuit breakers
Status supervision of breakers and isolators
Time tagging of events and alarms

Communication:
Modbus RTU and IEC 870-5-103 protocols (standard)

Modbus TCP/IP and IEC 61850 with communication modules

Display & Interface:
Built-in LCD for local parameter display
LED indicators for protection trip/alarm

Mounting:
Flush-mounted in control panel
Optional remote HMI (MIU)

Auxiliary Power Supply:
24–250 V DC or 48–230 V AC

Operating Conditions:
Operating Temperature: –10°C to +60°C
Protection Class: IP52 (front), IP20 (rear)