The Schneider Electric EMS59202, also known as the Easergy SC150 CT-CAPA module, is a medium-voltage switch controller designed for high-performance fault current detection and line protection in power distribution systems. Suitable for DIN-rail mounting, it integrates multiple digital inputs and relay outputs alongside advanced communication capabilities for modern substation automation.

Key Features:

Model: EMS59202 (Easergy SC150 CT-CAPA) – Switch controller
Brand: Schneider Electric / Easergy
Function: Fault detection (overcurrent, earth fault, under/over-voltage, negative sequence) in MV distribution
Inputs & Outputs:
- 8 digital inputs (IEC 61131-2, Type 3)
- 2 relay outputs, 8 A continuous, 440 VAC max, 15 A making current for 4 s
- Supports voltage inputs for VPIS, VDS, PPACS (0–30 VAC)
Current Sensing: Accepts CT inputs of 1 A or 5 A; accuracy class 0.5
Communications: Dual Ethernet RJ45 ports supporting IEC 60870-5-104
Supply & Power: 12–48 V DC, consumes 2 VA nominal
Environmental:
- Operating: –40 °C to +70 °C
- Storage: –40 °C to +85 °C
- Rugged IEC-standards certified (EMC, shock, vibration, IP4X)
Dimensions: 140 × 45 × 140 mm; weight ~0.52 kg

Schneider Electric – EMS59202 (SC150 CT-CAPA) – MV Switch Controller