Siemens C73040-A27-C246-03 Communication Module

Technical Overview

The C73040-A27-C246-03 (C73040-A27-C246-03) is a high-reliability serial interface module engineered for the Siemens SIPROTEC protection relay family. This component facilitates deterministic RS-485 data exchange between substation hardware and centralized SCADA or building management systems. Designed to operate within the high-interference environments of power distribution units, the C73040-A27-C246-03 (C73040-A27-C246-03) ensures that critical protection signaling and diagnostic telemetry remain stable despite significant electromagnetic discharge or ambient temperature fluctuations.

Detailed Technical Specifications

The following parameters define the electrical and mechanical profile of the C73040-A27-C246-03 (C73040-A27-C246-03):

• Product Series: SIPROTEC Protection & Control

• Interface Protocol: RS-485 (Serial Differential Signaling)

• Nominal Input Voltage: 24 V DC

• Data Transmission: Supports high-speed asynchronous serial communication

• EMI Resilience: Hardened circuitry for substation-grade electromagnetic immunity

• Environmental Performance:

• Operating Temperature Range: -25°C to +60°C

• Storage Temperature Range: -40°C to +70°C

• Physical Profile:

• Dimensions: 260 mm x 330 mm x 95 mm (H x W x D)

• Net Weight: 0.4 kg

• Installation: Optimized for secure rack-mount or panel-integrated control cabinets

• Compliance & Standards: CE Certified, RoHS Compliant

• Manufacturing Origin: Germany

Operational Applications

The C73040-A27-C246-03 (C73040-A27-C246-03) is primarily utilized in medium and high-voltage switchgear automation. Its role is to bridge the gap between individual SIPROTEC relays and the broader industrial network. Because RS-485 allows for multi-drop configurations, this module enables the efficient daisy-chaining of multiple protection units back to a single gateway, reducing wiring complexity while maintaining the high signal integrity required for power grid stability.