IE-3100-4P2S-E – 4xGE PoE+ Ports – 2xGE SFP Uplinks – 120W PoE Budget

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IE-3100-4P2S-E Description

The IE-3100-4P2S-E is a Cisco Catalyst IE3100 Rugged Series industrial switch for compact DIN-rail cabinets that power IP cameras and sensors over copper. The switch has four Gigabit PoE/PoE+ ports at up to 30W each, two Gigabit SFP uplinks and a 120W PoE budget on dual DC inputs from 12V to 54V. The 120W budget requires an input of 44V or higher, and PoE requires Cisco IOS XE 17.15.1 or later.

Quick Specs

Parameter

Specification

Product ID

IE-3100-4P2S-E

Product type

Industrial Ethernet switch

Network license

Network Essentials

Total ports

6

PoE copper downlink ports

4 x 1000BASE-T PoE/PoE+ RJ45 ports

SFP-only uplink ports

2 x 1000BASE-X ports

Default PoE budget

120 W

PoE output note

Up to 30 W PoE+ output on all 4 downlink ports

Minimum PoE software support

Cisco IOS XE 17.15.1

Power inputs

Dual DC inputs

Input voltage range

12V to 54V nominal

Power consumption

22.5 W excluding PoE load

Product Performance

Total Port Count
PoE Budget
Forwarding Rate

Key Features

Four PoE+ Copper Ports

Each of the four RJ45 downlinks supplies up to 30W under 802.3at, and 802.3af devices also work, so cameras, sensors and small access points can share one cabinet switch.

PoE Budget Tied To Input Voltage

The budget is 4W to 31W with a 9.6V to 18V feed, up to 90W from 18V to 44V and up to 120W above 44V. A low-voltage bus therefore limits how many 30W endpoints can run.

Internal Boost For 12V And 24V Feeds

A built-in boost converter turns a 12V or 24V input into the 54V used for PoE, and PoE operates across the full 9.6V to 60V absolute input range.

Software Baseline For PoE

PoE on this switch is available from Cisco IOS XE 17.15.1, so the powered ports stay off until the switch runs that release or later.

SFP-Only Gigabit Uplinks

The two uplinks are 1000BASE-X SFP ports that take 1G and 100M modules at up to 825 mW each, with no copper option on either port.

Shared Supply For Switch And PoE

One DIN-rail supply feeds both the switch and the PoE load, so the total must fit inside the supply wattage. The 170W DC unit PWR-IE170W-PC-DC= is not supported on this model.

Application Scenarios

Camera And Sensor Cabinets

A roadside or perimeter cabinet can power up to four IP cameras or sensors directly from the switch, and the PoE+ ports supply up to 30W to each of them.

Fiber Uplink From Remote Cells

An outlying OT cell with its own enclosure can return traffic to the plant network over the two SFP uplinks, with no copper run between the cabinet and the network core.

Low-Voltage DC Powered Sites

At a site fed from a 24V or 48V DC bus, the switch accepts 12V to 54V input and boosts it internally to supply PoE, so no separate PoE injector is needed.

Product Comparison

Parameter

IE-3100-4P2S-E

IE-3100-4T2S-E

IE-3100-3P1U2S-E

IE-3100-8P2C-E

Network license

Network Essentials

Network Essentials

Network Essentials

Network Essentials

Downlink ports

4 x 10/100/1000 PoE/PoE+ RJ45

4 x 10/100/1000 RJ45

3 x 10/100/1000 PoE/PoE+ RJ45 and 1 x 4PPoE RJ45

8 x 10/100/1000 PoE/PoE+ RJ45

Uplink ports

2 x 1000BASE-X SFP

2 x 1000BASE-X SFP

2 x 1000BASE-X SFP

2 x 1000BASE-T/1000BASE-X combo

Default PoE budget

120 W

No PoE

120 W

125 W on 52.5V to 60V input; up to 240 W with a suitable power supply and configuration

Maximum PoE per port

30 W (PoE+)

No PoE

30 W (PoE+); 90 W (4PPoE)

30 W (PoE+)

Nominal input voltage

12V to 54V

12V to 48V

12V to 54V

12V to 54V

Operating temperature

-40°C to 75°C (blower-equipped cabinet)

-40°C to 75°C (blower-equipped cabinet)

-40°C to 75°C (blower-equipped cabinet)

-40°C to 75°C (blower-equipped cabinet)

Mounting

DIN rail

DIN rail

DIN rail

DIN rail

IE-3100-4P2S-E is the powered version of IE-3100-4T2S-E: both have four copper ports and two SFP uplinks, but IE-3100-4P2S-E supplies a 120 W PoE budget with up to 30 W per port, so cameras and access points need it while data-only cabinets can use IE-3100-4T2S-E. An endpoint that needs up to 90 W on one port moves to IE-3100-3P1U2S-E, which keeps the same 120 W budget for the whole switch and offers one 4PPoE port of up to 90 W beside three PoE+ ports. Cabinets with more than four powered endpoints need IE-3100-8P2C-E, with eight PoE+ ports, a 125 W default budget that can be raised to 240 W with a suitable power supply and configuration, and two combo uplinks instead of SFP-only ones.

PoE Power Planning

Planning item

Cisco-confirmed value

Procurement check

PoE-capable ports

4 x 1000BASE-T PoE/PoE+ downlinks

Match the powered endpoint count to the four copper ports

Documented PoE budget

120 W

Keep the camera, sensor, AP, or phone power worksheet within the confirmed budget

Per-port output

Up to 30 W PoE+ on all 4 downlink ports

Use another IE3100 PoE SKU when 4PPoE endpoint power is required

Software support baseline

Cisco IOS XE 17.15.1 and later

Stage a supported image before relying on PoE operation

Input voltage behavior

12V to 54V nominal input with 9.6V to 60V absolute range

Confirm the plant power feed and PSU output before installation

Power supply sizing rule

Switch and PoE load must fit within the installed supply wattage

Choose an IE DIN-rail power supply with enough headroom for connected endpoints

Ordering Checklist

  • Power supply: Order PWR-IE65W-PC-AC=, PWR-IE65W-PC-DC= or PWR-IE170W-PC-AC=; PWR-IE170W-PC-DC= is not supported on this model. The switch plus its PoE load must fit inside the supply wattage.
  • DC input voltage: Feed 44 V or higher for the 120 W default budget; 18-44 V allows up to 90 W and 9.6-18 V up to 31 W. A low-voltage feed cannot power four 30 W endpoints.
  • SD card: Add SD-IE-1GB= or SD-IE-16GB=; the card is optional and does not ship by default. Without a card there is no stored configuration to restore when a failed switch is replaced.
  • Catalyst Center subscription: Add IE3100-DNA-E-L with a -1Y, -3Y, -5Y, -7Y or -10Y term, only if Catalyst Center Essentials manages the switch. IE3100-DNA-E-L covers up to 12 ports, which fits this 6-port switch; IE3100-DNA-E-M covers up to 24.
  • Rack mounting: Add STK-RACK-DINRAIL=, the 19-inch rack kit for DIN-rail mounting. The rack kit is its own order line, so it is missing unless added.

Optional Add-ons

Model

Description

PWR-IE65W-PC-AC=

65 W AC DIN-rail power supply option with PoE/PoE+ support

PWR-IE65W-PC-DC=

65 W DC DIN-rail power supply option with PoE/PoE+ support

PWR-IE170W-PC-AC=

170 W AC DIN-rail power supply option with PoE/PoE+ support

PWR-IE240W-PCAC-L=

240 W AC DIN-rail power supply option with PoE/PoE+ support

PWR-IE240W-AC-IEC=

240 W AC DIN-rail power supply option with PoE/PoE+ support

PWR-IE400W-AC-IEC=

400 W AC DIN-rail power supply option with PoE/PoE+ support

PWR-IE480W-PCAC-L=

480 W AC DIN-rail power supply option with PoE/PoE+ support

IE-3100-4P2S-E Front Panel Overview

The illustrations in this section provide an overview of the variety of components available on the various switch models in this product family. Not all models are illustrated.

Number

Feature

Number

Feature

1

Dual-media SFP port LEDs

6

Express Setup LED

2

Dual-media copper port LEDs

7

System LED

3

1000BASE-T port LEDs

8

Alarm input LEDs

4

Power connector LED

9

Alarm output LED

5

Management console LED

10

PoE Status LED Note This LED is present in PoE models only.

Specifications

Parameter Specification Parameter Specification
Product ID IE-3100-4P2S-E Product type Industrial Ethernet switch
Network license Network Essentials Total ports 6
PoE copper downlink ports 4 x 1000BASE-T PoE/PoE+ RJ45 ports SFP-only uplink ports 2 x 1000BASE-X ports
Default PoE budget 120 W PoE output Up to 30 W PoE+ output on all 4 downlink ports
Minimum PoE software support Cisco IOS XE 17.15.1 Operating system family Cisco IOS XE
Power inputs Dual DC inputs Input voltage range 12V to 54V nominal; 9.6V to 60V absolute
Normal-operation current 5.8 A at 12V; 7.3 A at 24V; 3.7 A at 54V Inrush current 80 A for 1 ms at 12V, 24V, or 48V input
Maximum power consumption 22.5 W excluding connected powered-device load Forwarding rate 8.928 Mpps
Forwarding bandwidth 6 Gbps DRAM 4 GB
Flash 1.5 GB SD card capacity 1 GB, 4 GB, or 16 GB optional SD card
MAC addresses 8000 VLAN scale 256 VLANs
IGMP multicast groups 512 STP instances 128
Console port 1 RS-232 via RJ45 and 1 micro USB Alarm I/O 2 dry-contact alarm inputs and 1 alarm output
Mounting DIN rail Dimensions 5.00 x 2.55 x 5.08 in. / 12.70 x 6.48 x 12.90 cm
Weight 2.0 lb / 0.91 kg switch only Operating temperature -40C to 75C in blower-equipped cabinet
Storage temperature -40C to 85C Operating humidity 5 percent to 95 percent noncondensing
Operating altitude Up to 15000 ft with no temperature derating MTBF 755,460 hours
Management Cisco Catalyst Center, WebUI, CLI, SNMP, NETCONF, and RESTCONF Power supply note Switch and PoE ports must stay within the installed power supply wattage

Quality Certifications

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    Pre-sales process was professional from initial contact to final invoice.

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    Verified Buyer
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    Express shipping was available when we needed it most.

    Tomas Jensen
    Posted on 26/01/2026
    Verified Buyer
    5.0

    Competitive pricing helped us stay within budget.

    Scott Lang
    Posted on 05/06/2025
    Verified Buyer
    5.0

    Big service for a small box. Thanks!

    Site Engineer
    Posted on 20/02/2025
    Verified Buyer
    5.0

    Packed well. Arrived safely at our field office.

Questions & Answers

  • What operating temperature does IE-3100-4P2S-E support?

    IE-3100-4P2S-E operates from -40C to 75C in a blower-equipped cabinet. Storage temperature is -40C to 85C, humidity can range from 5 percent to 95 percent noncondensing, and the switch needs no temperature derating up to 15000 ft.
  • What input voltage does IE-3100-4P2S-E need for its full PoE budget?

    IE-3100-4P2S-E needs a DC input of 44V or higher for its full 120W PoE budget. A feed from 18V to 44V limits PoE to 90W, and a built-in boost converter lets a low-voltage feed still supply PoE across the absolute input range.
  • Which PoE power classes does IE-3100-4P2S-E support on its four ports?

    IE-3100-4P2S-E supports PoE power classes 1 to 4 and also powers 802.3af devices. Per the IE3100 PoE configuration guide, the switch budgets Class 0 and Class 3 devices at 15.4 W each and Class 4 devices at 30 W. This applies from Cisco IOS XE 17.15.x.
  • What is the maximum input current of IE-3100-4P2S-E on its DC inputs?

    The maximum input current of IE-3100-4P2S-E is 7.0 A across the 12 to 54 VDC range, per the hardware installation guide. The DC supply and the cabinet breaker must be sized for that current, not for the lower figure drawn with no PoE load.
  • How much DIN-rail space does IE-3100-4P2S-E need and how heavy is it?

    IE-3100-4P2S-E measures 5.00 x 2.55 x 5.12 in and weighs 2.0 lb (0.91 kg), per the hardware installation guide. The cabinet must have a DIN-rail position with that depth free, and the 2.0 lb unit needs no special support.
  • What inrush current does IE-3100-4P2S-E draw at power-up?

    IE-3100-4P2S-E draws an inrush current of 80 A for 1 ms at a 12V, 24V or 48V input. The DC supply and any upstream fuse must tolerate that pulse at power-up, so check the breaker trip curve against it before the switch is installed in the cabinet.

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DataSheet Downloads

  • IE-3100-4P2S-E Datasheet