The Siemens 3VA9387-0TB50 is a 24V DC Communication and Measurement Module designed for SENTRON 3VA2 MCCBs (Frame Sizes 400A, 630A, and 1000A). This module provides power supply and communication functionality for electronic trip units, enabling advanced monitoring, measurement, and integration within power distribution systems. It is mounted in the right switch pocket of compatible 3VA2 circuit breakers and operates on a 24V DC control supply.
The module is widely used in industrial switchboards, MCC panels, PCC panels, building management systems, and intelligent power distribution networks where enhanced monitoring and communication capabilities are required.
• Siemens SENTRON 3VA Accessory
• Model: 3VA9387-0TB50
• Communication & Measurement Module
• 24V DC Control Supply Module
• Suitable for 3VA23, 3VA24, 3VA25 & 3VA26 MCCBs
• Compatible with 400A, 630A & 1000A Frame Sizes
• Supports Electronic Trip Unit Power Supply
• Enables Advanced Monitoring Functions
• Compact Plug-In Design
• Right Switch Pocket Installation
• Screw Terminal Connections
• Reliable Industrial Communication Interface
• IP20 Protection Rating
• Maintenance-Free Operation
• Industrial Grade Construction
• Genuine Siemens SENTRON Accessory
| Parameter | Specification |
|---|---|
| Product Series | Siemens SENTRON 3VA |
| Model Number | 3VA9387-0TB50 |
| Product Type | Communication & Measurement Module |
| Accessory Family | 3VA9 Accessories |
| Suitable MCCB Series | 3VA23 – 3VA26 |
| Compatible Frame Sizes | 400A / 630A / 1000A |
| Supply Voltage | 24V DC |
| Control Supply Voltage (Us) | 24V DC |
| Maximum Current Consumption | 0.1 A |
| Power Loss | 2.4 W |
| Mounting Position | Right Switch Pocket |
| Connection Type | Screw-Type Terminals |
| Protection Rating | IP20 |
| Safety Class | Class III (IEC 61558) |
| Pollution Degree | 3 |
| Overvoltage Category | I |
| Brand | Siemens |
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