Product Parameters

Manufacturer: Schneider Electric (Modicon)

Model: 990NAD23000

Product Type: Modbus Plus junction box (T‑tap)

Network Compatibility: Modbus Plus (MB+)

Ports: 3‑way (line in, line out, drop)

Protection Rating: IP20

Housing Color: Light grey

Termination: Screw terminals (field‑wirable)

Compatibility: Modicon Quantum, Premium, Momentum, TSX Micro PLCs

Certification: CE, UL, RoHS compliant

Weight: Approx. 0.23 kg

Specifications

Operating Temperature: 0 °C to +60 °C

Housing Material: Industrial plastic (light grey, flame‑retardant)

Connection Type: Screw terminals (for Modbus Plus cable conductors)

Characteristic Impedance: 100 Ω (matches Modbus Plus standard)

Cable Compatibility: 990NAD21110 / 990NAD21130 drop cables

Mounting: DIN rail or panel‑mountable

Series

990NAD Series: Modicon dedicated Modbus Plus connectivity series

Modbus Plus Networking Line: T‑taps, drop cables, and terminators

Features

3‑Way Branching: Splits Modbus Plus network into main line and drop connection.

IP20 Protection: Safe for indoor control cabinet installation.

Field‑Wirable Terminals: No preassembled connectors; flexible on‑site wiring.

Compact & Durable: Lightweight plastic housing for industrial environments.

Plug‑and‑Play Compatibility: Works with standard Modbus Plus cables and devices.

Purpose

To provide a reliable 3‑way branching point for Modbus Plus networks, enabling connection of multiple Modicon PLCs and distributed I/O modules in industrial automation systems.

Application Fields

Industrial Automation: Modbus Plus network expansion for manufacturing and process control.

Distributed I/O Systems: Connecting Momentum I/O to Quantum/Premium PLCs via T‑tap.

Control Cabinet Wiring: Centralized network branching in industrial control panels.

System Integration: Scaling Modbus Plus networks for multi‑device automation projects.