Westermo L308F2-SM-LC20 (3640-1450) – 8-Port Managed Fiber Optic Ethernet Switch Module | WeOS Series
The Westermo L308F2-SM-LC20 (order number 3640-1450) is an industrial-grade managed Ethernet switch module engineered for mission-critical network infrastructure in harsh environments. Built on Westermo’s proven WeOS (Westermo Operating System) platform, this module delivers carrier-class Layer 2 switching with single-mode fiber uplinks rated to 20 km — purpose-built for process automation, power utility, rail, and offshore applications.
As a specialist distributor, Konmask.com supplies the L308F2-SM-LC20 with full traceability documentation, supporting MRO, capital project, and emergency network infrastructure procurement workflows.
Complete Technical Specifications
| Part / Order Number | 3640-1450 |
| Model | L308F2-SM-LC20 |
| Manufacturer | Westermo Network Technologies |
| Series / Platform | WeOS Managed Switch Series |
| Switch Type | Managed Layer 2 Ethernet Switch Module |
| Copper Ports | 8 × 10/100BASE-TX (RJ45) |
| Fiber Uplink Ports | 2 × 100BASE-FX Single-Mode, LC connector |
| Fiber Reach | Up to 20 km (SM LC20) |
| Wavelength | 1310 nm |
| Switching Capacity | Non-blocking store-and-forward |
| Management | WeOS CLI, Web GUI, SNMP v1/v2c/v3, RMON |
| Redundancy Protocols | RSTP (IEEE 802.1w), MSTP (IEEE 802.1s), Westermo FRNT (Fast Recovery Network Technology) |
| VLAN | IEEE 802.1Q, up to 256 VLANs |
| QoS | IEEE 802.1p, 4 priority queues |
| Power Input | 10–60 VDC (wide-range DC input) |
| Operating Temperature | -40°C to +70°C |
| Protection Rating | IP30 (module form factor) |
| Mounting | DIN rail / panel mount |
| Certifications | CE, FCC, IEC 61850-3, IEEE 1613, EN 50121-4 (rail) |
| Country of Origin | Sweden |
| Weight | ~600 g |
Proven Application Environments
- Substation automation and IEC 61850 protection relay networks
- Railway trackside and station communication infrastructure
- Oil & gas platform and pipeline SCADA networks
- Wind farm and solar plant control system backbones
- Water treatment and utility distribution automation
- Factory automation and process control ring topologies
- Offshore and marine vessel network systems
Engineering Advantages
- WeOS platform — unified OS across Westermo product family enables consistent configuration, firmware management, and network policy deployment
- 20 km SM fiber uplinks — eliminates repeaters for long-distance inter-building or inter-substation links
- FRNT sub-20ms recovery — Westermo’s proprietary Fast Recovery Network Technology ensures near-zero downtime on ring topologies
- Wide-range DC input (10–60 VDC) — compatible with 12 V, 24 V, and 48 V substation battery bus systems without additional converters
- Extended temperature range (-40°C to +70°C) — qualified for outdoor cabinets and unheated enclosures without derating
- IEC 61850-3 & IEEE 1613 certified — meets the electromagnetic immunity and environmental requirements of power utility and rail standards
System Architecture & Signal Flow
The L308F2-SM-LC20 is typically deployed as a ring or star node in an industrial Ethernet backbone:
Field Devices / PLCs / RTUs → 8× RJ45 Access Ports (10/100BASE-TX) → L308F2-SM-LC20 Switching Fabric (WeOS) → 2× SM LC20 Fiber Uplinks → Core Switch / SCADA Server / DCS
FRNT ring redundancy provides automatic failover in <20 ms. VLAN segmentation isolates process, safety, and management traffic. SNMP traps and RMON counters feed upstream NMS platforms (e.g., Westermo WeConfig, PRTG, or Nagios).
Sourcing & Quality Verification
- Sourced through authorized Westermo distribution channels with full supply chain traceability
- Each unit inspected for physical integrity, label authenticity, and firmware version prior to shipment
- OEM packaging and serial number markings verified against Westermo product database
- Certificate of Conformance (CoC) available upon request
- Konmask.com does not source from grey-market or unverified secondary channels — counterfeit risk mitigated at intake
Procurement Process
- Lead Time: In-stock units ship within 1–3 business days; contact us for volume or project quantity availability
- MOQ: 1 piece
- Payment: T/T, L/C, PayPal, and major credit cards accepted
- Export: Worldwide shipping with commercial invoice and packing list; export licensing assistance available
- Emergency Orders: Contact [email protected] for expedited processing
Technical FAQ
Q: What is the difference between L308F2-SM-LC20 and L308F2-MM-LC2?
A: The SM-LC20 variant uses single-mode fiber with a 20 km reach at 1310 nm. The MM-LC2 variant uses multi-mode fiber with a 2 km reach. Select based on your inter-node cable plant type.
Q: Is WeOS firmware field-upgradeable?
A: Yes. WeOS firmware can be updated via CLI, Web GUI, or TFTP/SFTP without hardware replacement. Westermo publishes firmware release notes on their support portal.
Q: Does the L308F2-SM-LC20 support IEC 61850 GOOSE messaging?
A: The switch provides the Ethernet transport layer for GOOSE traffic. IEC 61850 GOOSE is a Layer 2 multicast protocol — VLAN and QoS configuration on the L308F2-SM-LC20 must be aligned with your protection relay engineer’s network design.
Q: Can this module be managed via Westermo WeConfig?
A: Yes. WeConfig is Westermo’s network management software and supports full configuration, monitoring, and topology visualization for all WeOS-based devices including the L308F2-SM-LC20.
Q: What is the warranty?
A: Konmask.com provides a 12-month warranty against manufacturing defects. Westermo’s standard OEM warranty terms apply where applicable.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: [email protected] | +0086 19859288691
