Description:

The EATON CS-TX3-3.81X2.54-64TW​is a high-density,64-position pluggable terminal block designed for printed circuit board(PCB)mounting.It serves as a robust and reliable interface,bridging the connection between a control board’s delicate circuitry and the field wiring in industrial control panels,power supplies,and automation equipment.

Application Scenarios:

Inside a modular servo drive,dozens of control signals,power connections,and feedback lines must be connected reliably to the main processor board.Soldering wires directly is not serviceable.The solution is to mount an EATON CS-TX3-3.81X2.54-64TW​terminal block directly onto the PCB.The field wires from encoders,brakes,and main power are securely landed into the screw terminals of this block.The block itself plugs into a corresponding male header on the drive’s main board.This application of the CS-TX3-3.81X2.54-64TW​allows for rapid drive replacement:a technician simply unplugs the entire wiring harness from the faulty drive and plugs it into a new one,slashing mean-time-to-repair(MTTR)from hours to minutes.It organizes 64 connections in a compact footprint,preventing wiring errors and ensuring a vibration-resistant,gas-tight connection critical for high-performance machinery.

Parameter:

Main Parameters

Value/Description

Product Model​

CS-TX3-3.81X2.54-64TW​

Manufacturer​

Eaton(Electronic Components Division)

Product Category​

Pluggable PCB Mount Terminal Block/Interface

Number of Positions​

64

Pitch(Horizontal)​

3.81 mm(center-to-center distance between terminals)

Pitch(Vertical/PCB)​

2.54 mm(standard pin header spacing)

Connection Technology

Screw Clamp(Cage Clamp)

Wire Range​

Typically 28-12 AWG(0.08-4.0 mm²)

Current Rating​

Up to 10 A(depends on wire and conditions)

Voltage Rating​

Up to 300 V

Contact Material​

Tin-plated Copper Alloy

Housing Material​

Polyamide(PA),UL94 V-0

Operating Temperature

-40°C to+105°C

Mounting​

Plugs onto 2.54mm male pin headers on PCB

Color​

Typically black housing,white marking area

Technical Principles and Innovative Values:

Innovation Point 1:Dual-Pitch Design for Optimized Space and Serviceability.The CS-TX3-3.81X2.54-64TW​features a clever dual-pitch design.The 3.81mm horizontal pitch on the wire-entry side provides ample space for screwdriver access and secure wire clamping,even with thicker conductors.The 2.54mm pitch on the PCB-mount side is the industry-standard pin header spacing,allowing for a compact board layout and high connection density.This design optimally balances user-friendliness during wiring with the need to save valuable real estate on the circuit board.

Innovation Point 2:Reliable Cage Clamp Connection Technology.The terminal block utilizes a proven cage clamp(spring pressure)connection mechanism.A precisely engineered metal cage,actuated by the screw,applies constant,high-pressure contact to the inserted conductor.This creates a gas-tight,cold-weld connection that is highly resistant to vibration and corrosion,ensuring long-term stability and low contact resistance.It accommodates a wide range of wire sizes,including ferruled and stranded wires,without damaging the conductor.

Innovation Point 3:Modular and Serviceable System Architecture.The pluggable design is its core value proposition.It transforms permanent solder connections into serviceable interfaces.This allows for the pre-wiring of control panels completely independent of the PCB assembly.It also enables rapid field replacement of a control board without the need to unscrew dozens of individual wires,dramatically reducing system downtime during maintenance or upgrades.The clear,numbered marking strips ensure error-free wire termination.

Application Cases and Industry Value:

Case Study:Modular PLC Rack System for Water Treatment.A systems integrator was building a large,distributed PLC-based control system for a new water treatment plant.Each remote I/O rack contained a CPU module,various signal cards,and required connections for over 50 field devices per rack.Hardwiring each device directly to the I/O cards would be time-consuming and make future card replacement a nightmare.

The integrator designed custom carrier boards for each I/O card type.Each carrier board was pre-fitted with an EATON CS-TX3-3.81X2.54-64TW​terminal block.The entire panel was then wired by electricians directly to these terminal blocks.Finally,the pre-assembled I/O cards were simply plugged into the backplane and their corresponding terminal blocks.This modular approach cut cabinet wiring time by an estimated 35%.During commissioning,a faulty analog input card was identified.Instead of hours of painstakingly labeling and removing wires,the technician unplugged the single terminal block from the faulty card and plugged it into the replacement.The system was back online in under 5 minutes.The project manager highlighted the CS-TX3-3.81X2.54-64TW​as a key component in meeting aggressive installation deadlines and providing the client with a maintainable system for decades to come.

Related Product Combination Solutions:

The CS-TX3-3.81X2.54-64TW​is part of a broader connectivity system.Key related products include:

PCB Male Headers:​The matching 2.54mm pitch,straight or right-angle male pin headers(e.g.,64-pin strips)that are soldered onto the PCB for the terminal block to plug onto.

End Plates/Brackets:​Optional accessory end plates(like EATON CS-EN​series)that provide mechanical stability and marking for the terminal block assembly.

Jumpers/Bridges:​Pre-formed metal bridges(like EATON CS-J…​series)for creating common potential connections(e.g.,for 0V or 24V)across multiple terminals without external wiring.

Marking&Labeling:​Marker strips and software for clear terminal identification.

Other Pitches/Positions:​Other terminal blocks in the same CS-TX3 family with different position counts(e.g.,10,20,40 positions)or pitches(e.g.,5.00mm,5.08mm)for different design needs.

Test Plugs&Adapters:​Tools for safe voltage measurement and testing without disconnecting wires.

Installation,Maintenance,and Full-Cycle Support:

Installation involves two main steps.First,the matching 2.54mm pitch male pin header must be correctly soldered onto the PCB.Second,the CS-TX3-3.81X2.54-64TW​terminal block is aligned and firmly pressed onto this header.Field wiring is then completed by inserting the stripped wire ends into the designated clamps and tightening the screws to the specified torque using a compatible screwdriver.It is crucial to follow the wire range specifications and torque settings to ensure a reliable connection.

Maintenance primarily involves periodic checking of terminal tightness,especially in high-vibration environments,and visual inspection for signs of overheating or corrosion.The main advantage is the ease of module replacement.If a terminal point is damaged,the entire block can be unplugged and replaced as a unit without disturbing the PCB soldering.We provide comprehensive support for the CS-TX3-3.81X2.54-64TW​and related components.Our products are sourced from authorized channels,ensuring authenticity.We can support with technical datasheets,CAD models for design-in,and offer reliable supply for both prototyping and production volumes,helping you build robust and serviceable industrial electronics.

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