YCTL-20C0150000000 Junction Assembly for Structured Aircraft Wiring

ElecSuppliers Part Number GuideAug 25, 2026

YCTL-20C0150000000 Is More Than a Multi-Pin Connector

The YCTL-20C0150000000 is easy to mistake for an ordinary multi-contact connector when looking only at its part number.

Its role is more specialized. It belongs to the junction assembly category and is associated with the CTL-20-513 V001 configuration and M81714/65-20-1 specification.

That makes it particularly relevant to structured electrical wiring systems where multiple circuits need to be organized through a dedicated junction point.

The Purpose of a Junction Assembly

Large electrical systems can contain hundreds or even thousands of individual connections.

Running every circuit directly between its source and destination can make the wiring difficult to install, inspect and repair.

A junction assembly provides a defined location for organizing those circuits.

Instead of treating the wiring system as one enormous collection of individual cables, engineers can divide it into manageable sections.

This approach can simplify maintenance and make circuit identification more straightforward.

Why the CTL-20-513 Identification Matters

When searching for YCTL-20C0150000000, engineers may also encounter the designation CTL-20-513 V001.

The associated specification number M81714/65-20-1 can also appear in component documentation and sourcing records.

For procurement teams, keeping these identifiers together is useful.

Searching by only the long manufacturer part number may produce fewer results than searching the related designation or specification number as well.

Built for Organized Wiring Architectures

The YCTL-20C0150000000 is better understood as part of a wiring system rather than an isolated component.

A junction point can connect different sections of an electrical installation while keeping the overall wiring architecture organized.

This becomes especially valuable when equipment contains distributed electrical systems.

For example, power, control, instrumentation and communication circuits may originate from different areas but still need to pass through clearly defined connection points.

A structured junction system provides a physical framework for that arrangement.

The 20-Contact Configuration

The CTL configuration associated with YCTL-20C0150000000 uses a 20-contact arrangement.

That contact count is an important part of identifying the correct component.

When replacing an existing junction assembly, engineers should verify the complete configuration rather than selecting another component simply because it belongs to the same general family.

Contact arrangement, mounting configuration and mating requirements all need to match the original installation.

Why These Components Matter in Aircraft Wiring

Aerospace electrical systems place unusual demands on interconnection components.

The wiring needs to remain organized despite limited space, vibration and difficult maintenance conditions.

A junction assembly can help establish predictable connection points within that environment.

The advantage is not simply electrical connectivity.

It is also maintainability.

When technicians know where a group of circuits is terminated, troubleshooting becomes easier than tracing individual wires through an entire installation.

Replacement Requires More Than Electrical Compatibility

A common mistake in component sourcing is to look only at voltage, current and contact count.

For a specialized junction assembly, that is not enough.

The replacement must also be compatible with the mechanical installation, mating hardware, wiring system and applicable qualification requirements.

A component that appears electrically similar may still be unsuitable if its physical configuration differs from the original.

This is especially important for legacy aerospace and defense equipment where the existing wiring architecture may have been qualified as a complete system.

YCTL-20C0150000000 for Legacy Equipment Maintenance

The part number can be particularly valuable when maintaining an existing system.

In a new design, engineers have considerable freedom to select a modern interconnection architecture.

A maintenance project is different.

The objective may be to replace one specific junction assembly without changing the surrounding wiring.

In that situation, locating the exact YCTL-20C0150000000 or its correctly identified equivalent can be much more useful than finding a generic replacement.

Search All Relevant Part Identifiers

For sourcing purposes, three identifiers are especially useful:

YCTL-20C0150000000

CTL-20-513 V001

M81714/65-20-1

Using all three when searching inventory and technical documentation can make it easier to locate the required component.

It also reduces the chance of overlooking stock listed under an alternate designation.

A Junction Component Designed Around System-Level Reliability

The significance of YCTL-20C0150000000 is not its appearance or its long part number.

Its value comes from its place within a structured electrical interconnection system.

For complex wiring installations, especially aerospace and other high-reliability applications, organized junction points can make an electrical system easier to build, inspect and maintain.

For engineers sourcing this component, the safest approach is to verify the complete part number, CTL configuration, mating interface and original system requirements before selecting a replacement.