EN50155 Switch | EN50155 Managed 10G PoE Switch ITP-1204GTM-12PHE-BP | DCT

Features

M12 and M23 connector against vibration and shock, M12 X-code for Gigabit port
Cable diagnostics, identifies opens/shorts distance
STP, RSTP, MSTP, ITU-T G.8031 ERP, ITU-T G.8032 Ethernet Protection Ring (ERPS) for redundant cabling
Provides up to 5 instances that each supports μ-Ring, μ-Chain or Sub-Ring type for flexible uses.
(Please see CTC Union’s μ-Ring white paper for more details)
μ-Ring for Redundant Cabling, recovery time<10ms in 250 maximum devices
Supports TTDP for train application
Supports IEEE 1588 PTP V2 for precise time synchronization to operate in Ordinary-Boundary, Peer to Peer Transparent Clock, End to End Transparent Clock, Master, Slave mode by each port
Supports EMS Management

The ITP series models are managed, industrial grade, L2 Fast Ethernet PoE (Power over Ethernet) switches that provide 12x 10/100Base-TX and 4x 10/100/1000Base-T(X) ports. Up to 12 IEEE 802.3at compliant PoE plus ports are classified as power source equipment (PSE) and provide up to 30 watts of power per port with a maximum power budget of 120W.

Housed in rugged wall mountable enclosures, these switches are designed for IEEE 802.3af/at compliant powered devices (PDs), such as surveillance cameras, wireless access points, and IP phones. The PoE switches use M12 connectors to ensure tight, robust connections and guarantee reliable connections against vibration and shock.

These models are also compliant with EN50155, covering power input voltage, surge, EFT, ESD, vibration and shock, making these switches suitable for industrial applications, such as vehicle, rolling stock, or vessel. With a wide power input range of 24/48/72/96/110VDC (operating range 20 to 137.5VDC), this product series is especially suitable for rolling stock and track side installations.

Overview

The ITP-1204GTM-12PH is an EN50155-certified managed PoE switch, designed for railway, rolling stock, and industrial applications. It features 12 Fast Ethernet M12 D-code ports, 4 Gigabit Ethernet M12 X-code ports, and 12 PoE+ ports (120W total budget).

This switch is built with rugged M12 and M23 connectors to withstand shock, vibration, and extreme environments, ensuring secure and reliable connections. It supports redundant power input (24-110VDC), advanced redundancy protocols, precise time synchronization (IEEE 1588 PTPv2), and EMS management, making it ideal for mission-critical railway and industrial networks.

Performance & Networking

High-Speed Switching Capacity – 10.4Gbps backplane with full wire-speed switching.
Fast Network Recovery – Supports µ-Ring, STP, RSTP, MSTP, ITU-T G.8031 ERP, and ITU-T G.8032 ERPS.
Ultra-Fast Failover – Recovery time <10ms, supporting up to 250 devices per ring.
TTDP (Train Topology Discovery Protocol) – Ensures seamless integration into railway communication networks.
IEEE 1588 PTPv2 Support – Provides precise time synchronization in Ordinary, Boundary, Transparent Clock, Master, and Slave modes.

Industrial-Grade Power Input

Redundant Dual DC Input – 24/48/72/96/110VDC (16.8-137.5VDC).
Regulated PoE Output (52VDC) – Ensures stable power for PoE devices.
4KV Surge Protection – PoE and UTP ports are protected against power surges.
Reverse Polarity & Overload Protection.

Power over Ethernet (PoE) Capabilities

12 PoE+ Ports – Supports IEEE 802.3af/at (30W per port, total 120W budget).
PoE Power Allocation Features:
- Auto Checking & Auto Reset when PoE PD Fails.
- PoE Scheduling (On/Off weekly configuration).
- Power Limit by Classification & Management.
- Total PoE Power Budget Limitation (120W Max).

Security & Authentication

IEEE 802.1X Port-Based & MAC-Based Authentication.
Access Control Lists (ACLs) for L2/L3/L4 (256 rules).
RADIUS & TACACS+ Authentication and Accounting.
SSL, SSH v2 for Secure Management.
IP Source Guard & DHCP Snooping.

Management & Monitoring

CLI (Cisco-like Command Line Interface).
Web UI & SNMP v1/v2c/v3 Management.
Modbus/TCP for Industrial Automation Monitoring.
Syslog, Email Alerts, and Alarm Relay for Event Warnings.
Port Mirroring for Traffic Analysis.

QoS & Traffic Management

IEEE 802.1p QoS with 8 Priority Queues per Port.
Traffic Prioritization Based On:
- 802.1p, IP Precedence, DSCP.
- MAC Address, VLAN ID, TCP/UDP Ports.
- Packet Type, Frame Type.
Bandwidth Control:
- Ingress: 100 Kbps – 1 Gbps.
- Egress: 100 Kbps – 1 Gbps.
Storm Control for Unicast, Broadcast, and Multicast Traffic.

VLAN & Link Aggregation

IEEE 802.1Q VLAN (Up to 4094 VLANs).
IEEE 802.1ad Q-in-Q VLAN.
MAC-Based VLAN (256 entries).
IP Subnet-Based VLAN (128 entries).
Protocol-Based VLAN (Ethernet, SNAP, LLC – 128 entries).
Private VLAN for Port Isolation.
IEEE 802.3ad Link Aggregation (Supports up to 5 trunk groups).
IEEE 802.1AX Passive & Active Mode.

IP Multicasting Support

IGMP Snooping v1/v2/v3 & MLD Snooping v1/v2.
Multicast Filtering, Throttling, & Fast Leave.
Maximum Multicast Group Entries: 1022.

Interfaces & Ports

12x M12 D-code Female Ports (10/100Base-TX, all with PoE).
4x M12 X-code Female Ports (10/100/1000Base-T).
1x RS-232 Console Port (5-pin M12 A-code Male).
2x Bypass GbE UTP Ports (Optional for -BP Model).

LED Indicators

Power System: Power 1 (Green), Power 2 (Green), Fault (Amber), CPU (Green), Ring Master (Amber).
UTP Ports: 10/100 Link (Green), 1000 Link (Amber).
PoE Ports: Active PoE (Green).

Environmental & Mechanical Specifications

Operating Temperature: -40°C ~ 75°C.
Storage Temperature: -40°C ~ 85°C.
Humidity: 5% – 95% (Non-condensing).
Enclosure: Rugged Metal, Fanless, IP54 Protection.
Dimensions: 113 x 260 x 132mm (D x W x H).
Weight: 2.8 kg.
Installation: Wall Mounting.
MTBF: 238,600 Hours (MIL-HDBK-217).

Railway & Industrial Certifications

EN50155 & EN50121-4 Railway Traffic Certification.
EN45545-2 Fire Protection for Railway Vehicles.
IEC61373 Shock & Vibration Protection.

EMC & Safety Certifications

CE, FCC Certified.
EN61000-6-2 (Heavy Industrial Immunity).
EN61000-6-4 (Heavy Industrial Emissions).

Environmental Protections

Electrostatic Discharge (ESD): EN61000-4-2 (Level 3).
Radiated Susceptibility (RS): EN61000-4-3 (Level 3).
Electrical Fast Transients (EFT): EN61000-4-4 (Level 3).
Surge Protection: EN61000-4-5 (Level 3).

Ordering Information

Model	Total Ports	FE M12	GbE M12	PoE Ports	PoE Budget	Power Input	Certifications	Temperature
ITP-1204GTM-12PH	16	12	4	12	120W	24/48/72/96/110VDC	EN50155, EN50121-4, EN45545-2, CE, FCC	-40~75°C

EN50155 Switch | EN50155 Managed 10G PoE Switch ITP-1204GTM-12PHE-BP