Westermo Merlin 3103 - Compact LTE Cat-4 Cellular Router
LTE Cat-4, 2 x Gigabit Ethernet, GNSS, TPM, Zero-touch Deployment, IP30
Model: Merlin-3103-T2G-QFR-G-DCi0936
The Westermo Merlin 3100 series is a versatile, compact cellular router providing high-speed data network connectivity for demanding industrial and smart grid applications. Designed with best-in-class cybersecurity features and robust industrial specifications, this router is ideal for critical infrastructure deployments requiring reliable remote connectivity in harsh environments.
With its Zero Touch deployment capability through the Activator software, the Merlin 3100 enables cost-effective, reliable, and consistent onboarding of routers in large-scale projects. The compact, rugged unit is suited to tight spaces with dimensions of just 40 x 135 x 124 mm, while its high MTBF (1,524,000 hours) and wide temperature range (-20°C to +70°C) support maximum service life in industrial settings.
Westermo's complete control over design and manufacturing ensures exceptional quality and security. The router is designed in-house by Westermo's R&D team, including hardware, operating system, and mechanics, with final secure assembly processes completed in Ireland. The factory pre-configuration option with installed SIMs or eSIMs further streamlines deployment.
KEY FEATURES
- Advanced Cybersecurity
- Trusted Platform Module (TPM) chip keeps cryptographic keys secure
- Secure Boot ensures software is authentic and unmodified
- Comprehensive security suite including 802.1X, IPSec encryption, and stateful firewall
- Robust Cellular Connectivity
- LTE Cat-4 cellular connectivity with global frequency band support
- Dual SIM card slots for network redundancy and coverage optimization
- Built-in GNSS receiver (GPS, GLONASS, BeiDou, Galileo)
- Versatile Network Features
- 2 x 10/100/1000 Mbit/s Ethernet ports (RJ45)
- Industrial protocol gateway and conversion capabilities
- Extensive routing protocols: IPv4/IPv6, DHCP, DynDNS, NAT, VLANs, BGP, OSPF, RIP
- SCADA protocol conversion with support for IEC 60870-5-104/101, IEC 61850, Modbus TCP, DNP3
TYPICAL APPLICATIONS
- Utility and Energy
- Smart grid infrastructure monitoring
- Substation communications
- Remote asset monitoring
- Industrial Automation
- Factory automation systems
- Remote site connectivity
- Transportation
- Trackside equipment monitoring
- Traffic management systems
Technical Specifications
| Specification |
Value |
| Dimensions (W × H × D) |
40 × 135 × 124 mm |
| Housing |
Full metal, IP30 |
| Weight |
490g |
| Operating Voltage |
9 to 36 VDC isolated |
| Power Consumption |
5 W typical |
| Temperature Range |
-20 to +70°C (operating)
-30 to +70°C (storage) |
| Humidity |
5-95% relative humidity |
| MTBF |
1,524,000 hours (Telcordia) |
| Interfaces |
2 × 10/100/1000 Mbit/s Ethernet TX, RJ45
2 × Mini-SIM (2FF) card slots
3 × SMA compatible connectors (2 for 4G, 1 for GNSS) |
| Mobile |
LTE Cat-4 with global band support |
| GNSS |
GPS, GLONASS, BeiDou, Galileo |
Software Features
- Management & Monitoring
- Web interface (HTTPS), SMS management support, CLI via console
- SSHv2, TFTP, SNMPv1/v2c/v3, Secure Copy (SCP)
- Flexible alarm and event system, port monitoring
- Built-in diagnostics and packet tracing, event logging, SNMP Traps, Syslog
- Networking & Security
- IPv4 and IPv6, DHCP, DynDNS, NAT, NAT Traversal, NTP Client
- VLAN support, packet filtering, port forwarding, QoS, VRF
- BFD, BGPv4, OSPF, RIP (v1 and v2), VRRP
- IPSec/L2TP/GRE, DMVPN, X.509 certificates, ECC, SHA2_512 support
- Stateful inspection firewall, RADIUS, TACACS+
Certifications & Standards
- EMC: EN/IEC 61000-6-2, Immunity industrial environments
- EMC: EN/IEC 61000-6-4, Emission industrial environments
- Safety: EN 62368-1, Safety Communication Technology
- RED: Radio equipment directive
- 5-year warranty