Network Switches
Lantronix SISTP1040-300 Series Unmanaged Hardened PoE+ Switches
The SISTP1040-300 Series are unmanaged, fanless DIN-rail switches with four or eight Gigabit PoE+ ports and two SFP slots, for plug-and-play power and connectivity at the hardened edge of a network.
From $418.70
Overview
About the Lantronix SISTP1040-300 Series
The SISTP1040-300 Series (also written SISTP1040 300; models SISTP1040-342-LRT and SISTP1040-382-LRT) is built for deployments that need hardened PoE+ but not switch configuration. There is no software to set up: the switch forwards traffic at Layer 2 wire speed and powers IEEE 802.3at and 802.3af devices as soon as it is wired. Lantronix positions the series at the edge of a hardened network, connecting PoE devices on factory floors, in outdoor enclosures and in hazardous locations.
Both models deliver 30 W on every PoE+ port simultaneously and have two 100/1000 dual-speed SFP slots that can be daisy-chained between switches. They run from -40 to +75 C in a fanless, IP30 metal housing only 44 mm wide, on redundant 48 to 57 VDC inputs with reverse power protection. Certifications include UL Class 1 Div 2, CE, FCC Part 15 and IEC/EN 62368-1. Store-and-forward switching supports 9K jumbo frames and IEEE 802.3az Energy Efficient Ethernet.
Status LEDs for system, both power inputs and each port make field checks quick without a laptop. A DIN-rail bracket is included with each switch, and the WMBH-01 bracket adds wall mounting. For outdoor sites, the OCA-P181610 vented cabinet provides DIN rails, terminal blocks and wire glands to house the switch and its DC supply.
Key capabilities
- Zero-configuration PoE+
- As unmanaged switches, the SISTP1040-300 models need no setup and supply 802.3at or 802.3af power to devices as soon as they are cabled.
- 30 W on every port
- Each model supplies 30 W on all PoE+ ports simultaneously: a 120 W budget on the 4-port model and 30 W across all eight on the 8-port model.
- Hazardous-location rated
- UL Class 1 Div 2 certification and a -40 to +75 C fanless design suit hazardous and outdoor locations where commercial switches cannot go.
- Fiber daisy chaining
- Two 100/1000 dual-speed SFP slots per switch let installers daisy-chain multiple switches over fiber along a line of cabinets or poles.
- Slim 44 mm housing
- The ruggedized metal housing is 44 mm wide and under half a kilogram, leaving room on crowded DIN rails in small enclosures.
- Redundant DC input
- Dual 48 to 57 VDC inputs with reverse power protection keep the switch running if one supply fails and guard against reversed input wiring.
How to choose the right SISTP1040-300 Series part number
The series has two switch models that differ in port count, PoE capacity and switching capacity. SISTP1040-342-LRT has four 10/100/1000 PoE+ ports, a 120 W PoE budget, 12 Gbps switching capacity and weighs 0.43 kg. SISTP1040-382-LRT has eight PoE+ ports with 30 W on all eight simultaneously, 20 Gbps switching capacity and weighs 0.46 kg. Both have two 100/1000 SFP slots and the same 48 to 57 VDC input. Size the DC supply to the PoE load: the 25104 DIN-rail supply outputs 48 to 55 VDC at 240 W.
Configure & order
Find your SISTP1040-300 Series part number
Every orderable SISTP1040-300 Series configuration, filtered by the specs that actually differ between them. Pick what you need on the left and the matching part numbers appear here.
SISTP1040-342-LRT
$418.70
3 in stock
SISTP1040-382-LRT
$524.70
1 in stock
Complete the deployment
Accessories, renewals & add-ons
Everything sold for the SISTP1040-300 Series, organized by what it does — power, mounting & enclosures— each with why you'd add it.
Power
2 items
25105
25105
Industrial DIN rail mounted power supply with 88-264 VAC and 124-370 VDC input ratings. It provides 48~55 VDC output at 2.5A and 120 Watts.
$291.50
4 in stock
25104
25104
Industrial DIN rail mounted power supply with 85-264 VAC or 124-370 VDC input and 48~55 VDC output. It delivers 5.0A and 240 Watts for Lantronix switch accessory deployments.
$495.00
1 in stock
Mounting & enclosures
3 items
DRBH-01
DRBH-01
DIN rail bracket kit for hardened switches. It is listed for SISPM, SISGM and SISTx products, with compatible products identified by Lantronix for multiple SISPM1040, SISGM1040,…
$11.00
1 in stock
WMBH-01
WMBH-01
Wall mount bracket for SISPM1040-384-LRT-C, SISPM1040-362-LRT, and SISPM1040-582-LRT switches.
$33.00
3 in stock
OCA-P181610
OCA-P181610
18 x 16 x 10” polycarbonate outdoor cabinet assembly for Lantronix outdoor switches.
$948.75
Ships on backorder
Compatibility taken from the Lantronix part-number tables for the SISTP1040-300 Series. Don't see what you need? Request a quote — we can source the full Lantronix catalog.
Where the SISTP1040-300 Series is used
- PoE cameras and sensors in hazardous-location enclosures
- Daisy-chained fiber links along roadside or rail cabinets
- Plug-and-play PoE+ for factory-floor devices
- Outdoor wireless and surveillance edges without switch configuration
SISTP1040-300 Series FAQ
What is the difference between SISTP1040-342-LRT and SISTP1040-382-LRT?
The 342 has four Gigabit PoE+ ports, a 120 W PoE budget and 12 Gbps switching capacity. The 382 has eight Gigabit PoE+ ports, 30 W available on all eight at once and 20 Gbps switching capacity. Both have two 100/1000 SFP slots, 48 to 57 VDC redundant inputs and a -40 to +75 C rating.
Are SISTP1040-300 switches managed or unmanaged?
They are unmanaged. There is no web, CLI or SNMP configuration; the switches use a Layer 2 wire-speed store-and-forward engine and supply PoE+ automatically to compliant 802.3at and 802.3af devices.
What power supply do SISTP1040-300 switches require?
They require 48 to 57 VDC on redundant inputs with reverse power protection. The supply must cover the PoE load plus the switch. Compatible DIN-rail supplies listed include the 25104 (48 to 55 VDC, 240 W) and the 25105.
Can the SISTP1040-300 be used in hazardous locations?
Yes. The series carries UL Class 1 Div 2 certification, operates from -40 to +75 C with a fanless design, and has an IP30 metal enclosure. Lantronix describes it for connecting PoE devices in hazardous locations at the edge of a hardened network.
