Panduit Tinned CPR Braided Sleeving FOR EMI EA

Panduit SE50TC-L Tinned Copper EMI Braided Cable Sleeving

Overview

The Panduit SE50TC-L is a 50-foot spool of Pan-Wrap™ tinned copper braided sleeving designed to protect wire harnesses and cable bundles from abrasion, electromagnetic interference (EMI), radio-frequency interference (RFI), and electrostatic discharge (ESD). At 0.5 inch (12.7 mm) nominal inner diameter with a 25-ampere current capacity, it fits mid-range cable bundles common in industrial control panels, transportation wiring, and defense electronics enclosures. Manufactured to CID A-A-59569 (formerly MIL-SPEC QQ-B-575), the SE50TC-L meets the procurement requirements of military and government contractors who cannot accept alternative materials without written approval. If you're sourcing Panduit wire management products for a structured cabling or panel build, this sleeve belongs in the same order as your lacing tape and conduit.

Key Features

• Tinned Copper Construction: The electroplated tin finish over copper braid resists oxidation at termination points — critical in humid environments or wherever the sleeve sees intermittent disassembly. Bare copper degrades at crimp and solder junctions over time; tinning keeps contact resistance predictable across the service life of the assembly.
• EMI / RFI / ESD Shielding: The woven copper geometry provides a continuous conductive path around the cable bundle. In control panels mixing signal and power wiring, this reduces noise coupling into low-voltage sensor leads without requiring separate conduit runs for each circuit.
• 25-Ampere Current Capacity: Unlike purely mechanical sleeving, this product can carry fault or drain current when bonded at both ends — 25A is sufficient for most grounded shield drain applications without upsizing to a heavier braid. Size up if the design calls for higher fault-current paths.
• 0.5 Inch (12.7 mm) Nominal ID: Sized for mid-range harness diameters. Expandable braid construction accommodates bundle variation — verify your compressed bundle OD is at or below the nominal to maintain coverage and current rating across the run.
• MIL-SPEC CID A-A-59569 Compliance: This sleeve meets the Commercial Item Description that replaced MIL-SPEC QQ-B-575. For defense, aerospace, and transit authority procurement, spec compliance is a hard gate — non-conforming material will be rejected at incoming inspection regardless of visual similarity. The SE50TC-L documents this compliance out of the box.
• 50-Foot (15.24 m) Spool: A single spool handles multiple harness runs on a typical panel build without mid-run splices. For large-scale installations or multi-panel deployments, the 4-unit carton quantity simplifies procurement and reduces per-unit shipping cost.
• Abrasion Protection: The woven copper jacket acts as mechanical armor at pass-throughs, grommet edges, and panel cutouts — locations where insulation chafing causes intermittent faults that are expensive to trace in a live system. Installing sleeving at assembly is significantly faster than diagnosing a chafe fault after commissioning.
• Silver Finish: The tinned silver color simplifies visual inspection — contamination, corrosion, or mechanical damage to the braid is visible during scheduled maintenance without removing the harness from the duct or panel.

Integration and Compatibility

The SE50TC-L integrates into any wire routing and management system where braided metallic sleeving is specified. Standard Panduit cable management accessories — including heat-shrink end caps, cable ties, and lacing anchors — are compatible with this sleeve diameter. For EMI continuity, the sleeve should be bonded to chassis ground at each end using conductive backshells, clamp-style grounding fittings, or conductive heat-shrink end caps. Unbonded installation provides abrasion protection only; shielding effectiveness depends on a low-impedance ground path at both terminations. The 0.5-inch ID is compatible with standard backshell sizes used on MIL-DTL-38999 and D-subminiature connector assemblies. When ordering for a specific network infrastructure or panel build, confirm the compressed bundle OD before cutting — braid cannot be re-expanded once trimmed.

What's in the Box

• 1x Pan-Wrap SE50TC-L tinned copper braided sleeving, 50 ft (15.24 m) spool

Frequently Asked Questions

Q: What standard does the SE50TC-L meet, and does it replace MIL-SPEC QQ-B-575?

A: Yes. The SE50TC-L is manufactured to CID A-A-59569, which is the Commercial Item Description that formally replaced MIL-SPEC QQ-B-575. For most defense and government procurement applications, CID A-A-59569 is the current applicable specification.

Q: What is the nominal inner diameter and current capacity of the SE50TC-L?

A: The nominal inner diameter is 0.5 inch (12.7 mm) and the current capacity is 25 amperes. These are the two primary sizing parameters when matching the sleeve to your harness bundle.

Q: Does the SE50TC-L provide EMI shielding, or is it abrasion protection only?

A: It provides both. The tinned copper braid shields against EMI, RFI, and ESD when properly grounded at both ends. Without bonded end terminations, you retain mechanical abrasion protection but shielding effectiveness is significantly reduced.

Q: What is the material and finish on the SE50TC-L?

A: The sleeve is copper braid with an electroplated tin (zinc) finish coating, resulting in a silver color. The tin finish improves oxidation resistance at termination points compared to bare copper.

Q: How much sleeving is on a single SE50TC-L spool, and how is it packaged?

A: Each spool contains 50 feet (15.24 meters) of sleeving. The package quantity is 1 spool; the carton quantity is 4 spools.

Q: Is the SE50TC-L expandable, and can it accommodate varying bundle diameters?

A: Yes. Like all braided sleeving, the construction is expandable, allowing it to accommodate some variation in bundle diameter. The nominal 0.5-inch ID is the design target — verify your compressed bundle OD is at or below this dimension to maintain rated coverage and current capacity.

Marty Allison

The SE50TC-L comes up frequently in panel builds where the spec sheet requires MIL-grade braided sleeving but the procurement team is working off a commercial catalog — the CID A-A-59569 callout on this spool closes that gap without sourcing from a defense-only supplier. The 25A current rating is the spec most people overlook: if you're bonding the braid as a shield drain, that capacity matters, and 25A covers the vast majority of control panel drain paths without upsizing.

Technical Highlights:

• CID A-A-59569 Compliance: Direct replacement for MIL-SPEC QQ-B-575 — procurement-ready for defense, transit, and government panel assemblies without a deviation request.
• Tinned Copper Braid: The electroplated tin finish resists oxidation at crimp and solder terminations, keeping contact resistance stable over the service life — important in assemblies that get disassembled and re-terminated during field service cycles.
• 0.5-Inch ID at 25A: This combination of bore and current rating fits mid-range harnesses common in industrial automation and mil-aero enclosures — large enough for a meaningful bundle, rated high enough to serve as a bonded ground path rather than cosmetic coverage only.

Deployment Considerations:

• Bond both ends to chassis ground using conductive backshells or clamp fittings — an unbonded run gives you abrasion protection but no measurable EMI attenuation. Shielding effectiveness is entirely dependent on the quality of those terminations.
• The 50-foot spool length (15.24 m) works well for a single panel build, but if you're outfitting multiple enclosures, order by the 4-unit carton to avoid mid-project reorders — cut length cannot be returned once trimmed.

Best fit for mil-aero ground support equipment, transit vehicle wiring harnesses, and industrial control panels where the build spec explicitly calls out CID A-A-59569 or former MIL-SPEC QQ-B-575 — this is the straightforward commercial-catalog path to meeting that requirement without a special procurement action.