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GENERAL DESCRIPTION

The NT series is a range of compact IEEE 802.3 layer two network switches 

with automatic speed, duplex and cable sensing. The series features ultra-robust 

construction, capable of withstanding environmental extremes for use in mission 

critical applications.

These affordable, Class I, Division 2 switches feature redundant power 

inputs, hardened metal enclosures, and 16 kV port protection. Each switch is 

capable of auto negotiating 10/100 Mb and half/full duplex communications.

SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in the 

literature or on equipment must be observed to ensure personal safety and to 

prevent damage to either the instrument or equipment connected to it. If 

equipment is used in a manner not specified by the manufacturer, the protection 

provided by the equipment may be impaired.

For 108TX: Use 60/75°C rated copper wire, (0.22Nm) 2 inch-lbs. tightening 

torque for field installed connectors.

For 104TX & 105TX: Use 95°C rated copper wire, (0.22Nm) 2 inch-lbs. 

tightening torque for field installed connectors.

SPECIFICATIONS

1.

POWER

: 10-30 VDC

NT104TX/NT105TX

: 215 mA max. @ 24VDC

NT108TX

: 250 mA max. @ 24VDC

2.

LEDs

:

LED

COLOR

DESCRIPTION

ON

Power is Applied.

OFF

Power is OFF.

LNK/ACT

ON

Link established, no Activity on cable.

BLINKING

Link established, Activity on cable

OFF

No link activity on cable.

SPD

ON

Link is 100Mbps.

OFF

Link is 10Mbs.

3.

ENVIRONMENTAL CONDITIONS

:

Operating Temperature Range

:

NT104TX/NT105TX

: -40 to +80 °C

NT108TX

: -40 to +70 °C

Storage Temperature Range

: -40 to +85 °C

Operating Humidity

: 10-95%, non-condensing

Altitude

: Up to 3000 meters.

4.

CONSTRUCTION

: Brushed aluminum housing

5.

CONNECTIONS

:

Power

: Removable wire clamp screw terminal block.

Wire Gage Capacity

: 28 AWG to 16 AWG

Torque

: 2 in/lb (0.22 Nm)

Ethernet

: RJ-45 UTP ports

6.

MOUNTING

: Snaps onto standard DIN style top hat (T) profile mounting 

rail according to EN50022 -35 x 7.5 and -35 x 15.

7.

CERTIFICATIONS AND COMPLIANCES

:

UL Listed (N-Tron Incorporated, Part numbers 104TX, 105TX, 108TX. File 

#E214222)

Safety: Suitable for use in Class I, Division 2, Groups A, B, C and D 

Hazardous locations, or non-hazardous locations only.

Immunity to Industrial Locations:

EMI: EN61000-6-4, EN55011 - Class A

 FCC Title 47, Part 15, Subpart B - Class A

 ICES-003 – Class A

EMS: EN61000-6-2

EN61000-4-2 (ESD)

EN61000-4-3 (RS)

EN61000-4-4 (EFT)

EN61000-4-5 (Surge)

EN61000-4-6 (Conducted Disturbances)

8.

 WEIGHT

:

NT104TX/NT105TX

: 0.6 lbs. (0.27 Kg)

NT108TX0

: 0.7 lbs. (0.31 Kg)

CAUTION: Risk of Danger.

Read complete instructions prior to 

installation and operation of the unit.

UNMANAGED SWITCH REQUIRES NO CONFIGURATION

SUPPORTS 10/100 MBPS NETWORKS

AUTO HALF/FULL DUPLEX NEGOTIATION

REDUNDANT POWER INPUTS

AUTO-CROSSING DETECTION SUPPORTS STANDARD AND 

CROSSOVER ETHERNET CABLES

Bulletin No.  NT100-X
Drawing No.  LP0871
Effective  06/11

MODEL NT100 SERIES – UNMANAGED INDUSTRIAL ETHERNET SWITCHES

 

WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT 

EQUIPMENT WHILE THE CIRCUIT IS LIVE OR UNLESS THE AREA 

IS KNOWN TO BE FREE OF IGNITABLE CONCENTRATIONS.

WARNING - EXPLOSION HAZARD - SUBSTITUTION OF 

COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, 

DIVISION 2

WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENT 

UNLESS POWER HAS BEEN SWITCHED OFF OR AREA IS KNOWN TO BE 

NON-HAZARDOUS.

C

US

UL

R

LISTED

65SN

FOR USE IN HAZARDOUS LOCATIONS:

Class I, Division 2, Groups A, B, C, and D

or unclassified or non-hazardous locations only.

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]

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