Rockwell TC-302-02-4M0 Thermocouple Extension Cable (4.0 m) for Industrial Temperature I/O

The model TC-302-02-4M0 appears to be a Rockwell Automation thermocouple-grade extension cable, with the “-4M0” suffix indicating a 4.0 m length. From my experience, this type of cable is used to connect field thermocouples to PLC temperature input cards or dedicated controllers without adding extra junctions or measurement error. It’s the practical choice when you want reliable, noise-resilient millivolt signal transmission from a hot zone back to your control panel.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery time: 1 week for in-stock, no more than one month at the latest
• Payment: 50% advance payment, full payment for delivery
• Express delivery options: FedEx, UPS, DHL

Key Features

• 4.0 m pre-terminated length – Typically the cleanest way to bridge sensors on the machine to the control cabinet without onsite splicing.
• Thermocouple-grade conductors – Uses matched alloys for low drift and stable millivolt signal transmission.
• Noise-aware construction – Suited for routing alongside industrial equipment; in many cases reduces interference when paired with correct grounding practices.
• Rockwell ecosystem friendly – Pairs commonly with Allen‑Bradley temperature input modules in CompactLogix, ControlLogix, and Micro800 systems.
• Routing flexibility – Compact OD for cabinet wiring and machine runs; easier tie-in to terminal blocks.
• Consistent quality – Typically supplied to RoHS standards and UL-recognized constructions used across Rockwell cabling lines.

Technical Specifications

Application Fields

You’ll typically see this used wherever precise temperature sensing feeds a PLC or controller. A few practical examples we’ve supported:

• Heat-treatment ovens, furnaces, and kilns connecting to ControlLogix or CompactLogix temperature input cards.
• Food & beverage process lines (pasteurization, CIP validation) where stable thermocouple runs matter.
• Plastics extrusion/molding machines that rely on consistent barrel and mold temperature feedback.
• Pharma and biotech skids needing clean cabinet terminations and traceable wiring paths.
• Industrial test benches and environmental chambers with frequent sensor swaps.

Advantages & Value

• Lower integration effort – Pre-sized length often eliminates field splicing and rework.
• Compatibility – Designed with Rockwell temperature I/O in mind; helps reduce mismatch errors.
• Quality assurance – Stable measurement in most cases thanks to matched alloys and predictable jacket performance.
• Procurement simplicity – Short lead times and a defined model make repeat builds straightforward.
• Support – Easy to pair with standard terminal blocks and I/O modules for faster panel builds.

Installation & Maintenance

• Environment – Route in dry, ventilated cabinets where possible; if on-machine, protect from sharp edges, oil spray, and continuous flexing unless specified for it.
• Wiring practices – Keep at least 150 mm separation from VFD motor leads and high-voltage runs; cross at 90° when needed.
• Grounding – Terminate shields (if present) at one end only to avoid ground loops; follow plant standards.
• Polarity & type match – Match the cable alloy to the thermocouple type (J/K/T, etc.) and maintain polarity all the way to the module.
• Inspection – Periodically check strain reliefs, connector tightness, and insulation damage; replace at signs of embrittlement or cuts.
• Calibration context – If you change cable length or type during maintenance, re-verify the control loop’s temperature calibration.

Quality & Certifications

• Typically RoHS compliant cabling materials.
• UL recognition on comparable Rockwell cabling families; specific file/style may vary by build.
• CE applicability may apply for cabling incorporated in CE-marked assemblies.
• Manufacturer warranty: 365 days (as supplied).

Common Pairings (Supporting Components)

You might notice the best results when this cable is paired with Rockwell temperature input modules and clean terminal management. Customers typically match it with:

• Allen‑Bradley 1756-IT6I2 (ControlLogix thermocouple input)
• Allen‑Bradley 1769-IT6 (CompactLogix thermocouple input)
• Allen‑Bradley 5069-IF6xT (Compact 5000 thermocouple/RTD variants)
• Allen‑Bradley 1492 series terminal blocks for tidy cabinet terminations

Note: The “-02” mid-suffix in Rockwell cabling often denotes a specific connector or wiring style. If you need confirmation on the exact conductor alloy, jacket material, and connector type for TC-302-02-4M0, share your sensor type (J/K/T, etc.) and PLC module part number—we’ll verify interoperability before you place the order.