What is the PoE power budget and per-port capability?

The SISTP1040-342-LRT provides a total PoE budget of 120 Watts, delivering up to 30 Watts per port on all 4 Gigabit Ethernet PoE+ ports simultaneously, compliant with IEEE 802.3at (PoE+) and 802.3af (PoE). This supports high-power devices like PTZ cameras over 100m distances.

What are the operating temperature range and protections?

It operates from -40°C to +75°C in 5-95% non-condensing humidity with IP30 ingress protection. The fanless rugged metal design includes redundant 48-57 VDC inputs with reverse power protection, suitable for UL Class 1/Div 2 hazardous locations.

How many ports and what types does it have?

Features 4x 10/100/1000Base-T RJ-45 PoE+ ports (100m reach) and 2x 100/1000Base-X dual-speed SFP slots for a total of 6 ports. Supports store-and-forward Layer 2 switching at 12 Gbps with 4K MAC table and 9K jumbo frames.

What mounting options are available?

Includes DIN rail bracket for panel mounting; wall mount bracket (WMBH-01) sold separately. Compact dimensions (1.7" W x 5.1" D x 5.3" H, 0.95 lbs) fit industrial enclosures easily.

What compliance standards does it meet?

NDAA and TAA compliant; UL Class 1/Div 2; EMI: CE, FCC Part 15; Safety: IEC/EN62368-1. Also supports EN50121-4, EN50155, NEMA TS-2, IEC61850-3, IEEE1613 for transportation and utility applications.

What is the power consumption without PoE?

Idle power consumption is 4.4 Watts without PoE load, thanks to IEEE 802.3az Energy Efficient Ethernet. Redundant DC inputs ensure reliability, with status LEDs for Power1, Power2, system, and ports.

SISTP1040-342-LRT - Transition Networks SISTP1040-342-LRT 4x PoE+ 2x SFP Industrial Switch

Name: Transition Networks SISTP1040-342-LRT 4x PoE+ 2x SFP Industrial Switch
Brand: Transition Networks
SKU: SISTP1040-342-LRT

SISTP1040-342-LRT - Transition Networks SISTP1040-342-LRT 4x PoE+ 2x SFP Industrial Switch | US IT Hardware

Product overview

The Transition Networks SISTP1040-342-LRT is an unmanaged Layer 2 hardened Gigabit Ethernet PoE+ switch designed for demanding industrial environments. It features 4x 10/100/1000Base-T RJ-45 PoE+ ports supporting up to 30W per port (total 120W budget) and 2x 100/1000Base-X dual-speed SFP slots for fiber uplinks. With a 12 Gbps switching capacity, 4K MAC address table, and jumbo frame support up to 9K bytes, it ensures wire-speed Layer 2 performance via store-and-forward architecture. Redundant 48-57 VDC power inputs with reverse protection and fanless rugged metal design enable reliable operation from -40°C to +75°C at 5-95% humidity (IP30). DIN rail mounting (bracket included) and wall mount option suit edge deployments. Compliant with IEEE 802.3af/at, 802.3az, UL Class 1/Div 2, NDAA/TAA, it powers PoE devices in hazardous locations like factories or outdoor enclosures while supporting daisy-chaining for network resilience.

4x Gigabit PoE+ ports, 120W budget (30W/port simultaneous)
-40°C to +75°C operation, IP30 fanless rugged design
12 Gbps switching, 4K MAC, 9K jumbo frames, 2x SFP
Redundant 48-57 VDC power with reverse protection
IEEE 802.3at/af compliant for PoE devices
NDAA/TAA compliant, UL Class 1/Div 2 certified

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

PoE Compliance
Manufacturer part #	SISTP1040-342-LRT
Brand	Transition Networks
Condition	New
Model	SISTP1040-342-LRT
Design	Ruggedized metal closure; Fan-less design
Technology	Store-and-forward switching architecture; Layer 2 wire-speed switching engine
Status LEDs	System; Power1; Power2; Port Status
Product Line	Transition Networks Hardened Industrial Switches
Product Type	Unmanaged Layer 2 Hardened Gigabit Ethernet PoE+ Switch
Reset Button	Manual reset button to reset the switch

Compatible systems

Unmanaged Layer 2 switch; no OS compatibility required. Compatible with any IEEE 802.3at/af PoE device; fiber uplink enables daisy-chain topology for network reliability in harsh industrial environments.

Generic Industrial/Hazardous Location Networks
Model: Any PoE-enabled device
Form factor: N/A
Generation: N/A
Designed for edge deployment in factory floors, outdoor enclosures, and hazardous environments; supports daisy-chaining via fiber uplink ports

Best for

Industrial Edge Networks
Powers PoE devices at network edges in hazardous locations with 4x PoE+ ports (30W each, 120W total) and 2x SFP for fiber daisy-chaining, ensuring reliability in -40°C to +75°C conditions.
Outdoor Enclosures
IP30-rated fanless design with rugged metal closure operates in 5-95% humidity and extreme temperatures, ideal for powering IP cameras or sensors via PoE+.
Factory Floors
UL Class 1/Div 2 compliant with redundant DC power and 12 Gbps switching supports automation equipment in harsh vibration-prone areas.
Transportation Systems
EN50155/EN50121-4 compliant for rail/traffic with jumbo frame support up to 9K bytes and Energy Efficient Ethernet for reliable data transmission.

Details

Shipping, warranty & returns

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Supported Protocols	IEEE 802.3; IEEE 802.3u; IEEE 802.3z; IEEE 802.3ae; IEEE 802.3x; IEEE 802.1p; IEEE 802.3az (Energy Efficient Ethernet); IEEE 802.3af; IEEE 802.3at; CSMA/CD

Compliance Certifications	UL Class 1 / Div 2; EMI: CE, FCC Part 15; Safety: IEC62368-1/EN62368-1; NDAA Compliant; TAA Compliant

MAC Address Table	4K MAC address table
Switching Capacity	12 Gbps
Jumbo Frame Support	Up to 9K bytes

Power Consumption

PoE Budget	Total PoE Budget: 120 Watts; 30 Watts per port on all 4 ports simultaneously
Power Supplies	Redundant 48-57 VDC input; reverse power protection
Power Consumption (No PoE)	4.4 Watts

Physical Characteristics

Weight	0.95 lbs (0.43 kg)
Dimensions	Width: 1.7 inches (44 mm); Depth: 5.1 inches (130 mm); Height: 5.3 inches (135 mm)
Form Factor	Compact industrial enclosure; Din Rail Bracket included
Mounting Options	Din Rail mounting (bracket included); Wall mount bracket available (WMBH-01, sold separately)

Humidity	5% to 95% non-condensing
Ingress Protection	IP30
Operating Temperature	-40°C to +75°C

SFP Slots	2x 100/1000Base-X dual speed SFP slots
Ethernet Ports	4x 10/100/1000Base-T RJ-45 PoE+ ports (100 m/328 ft. reach)
Total Network Ports	6 ports (4 Gigabit Ethernet + 2 SFP)

Transition Networks SISTP1040-342-LRT 4x PoE+ 2x SFP Industrial Switch

Product overview

Featuring

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Network & Communication

Power Consumption

Physical Characteristics

Environmental

Interface/Ports

Frequently asked questions