How Does One Connector Family Cover M16, M20, and M25 Installations?

You're sourcing connectors for a project, and the cable sizes vary—one application needs a compact M16 for a 3mm cable, another requires a larger M25 for a 14mm cable, and you have multiple core configurations to consider. A waterproof connector family that covers all these options in a single product line simplifies procurement, reduces inventory complexity, and ensures consistent sealing quality across every installation. The IP68 waterproof connector series from Jixiang Connector was engineered with that principle in mind—M16, M20, and M25 thread sizes, 2P to 5P configurations, and cable ranges from 3mm to 14mm, all built with the same PA66 flame-retardant housing and copper alloy contacts. This article walks through how this connector family simplifies cable management—from the sizing options that match your cable to the IP68 sealing that protects every connection.

Questions Engineers Ask About Sizing and Compatibility

Two Practical Concerns—Answered Up Front

Q: What thread sizes and core configurations are available in this connector family?
A: The IP68 waterproof connector series is available in M16, M20, M25, and M25-T thread sizes. Core configurations range from 2P to 5P, depending on the model. This range covers most industrial and outdoor cable connection requirements.

Q: What cable sizes does each model support?
A: Cable ranges vary by model: M16 covers 3-6.5mm and 7-10mm; M20 covers 5-8mm and 9-12mm; M25 covers 5-8mm, 9-12mm, and 10-14mm; M25-T covers 5-9mm, 9-12mm, and 10-14mm. Cross-section support ranges from 0.5mm² to 6.0mm².

The Sizing Challenge — Why One Size Doesn't Fit All

Every cable installation has different requirements. Some applications demand a compact connector for thin cables; others need a larger housing for thicker, high-current cables. The IP68 waterproof connector series addresses this with a range of thread sizes that match different installation scenarios.

M16, M20, M25 — Three Thread Sizes, One Reliable Design

The series offers M16, M20, M25, and M25-T thread sizes. This range covers everything from small-signal cables to larger power cables. The M16 is ideal for compact installations and lower-current applications; the M20 provides a versatile middle option; and the M25 handles larger cables and higher currents. Despite the size differences, all models share the same construction quality: PA66 flame-retardant housing and copper alloy contacts.

2P to 5P Configurations — Matching Cores to Your Circuit

The series supports 2P, 3P, 4P, and 5P configurations. Whether you need a simple two-wire connection or a five-wire circuit, there's a model that fits. This flexibility means you can standardize on one connector family across different equipment types without compromising on core count.

Cable Compatibility That Covers Your Needs

The IP68 waterproof connector series supports a wide range of cable sizes, reducing the need for multiple connector families.

0.5mm² to 6.0mm² — Supporting a Wide Range of Cable Sizes

Cross-section support ranges from 0.5mm² to 6.0mm², depending on the model. This range covers everything from small-gauge signal cables to larger power cables. The M25-T model offers the widest cross-section support, accepting cables up to 6.0mm².

3mm to 14mm Cable OD — One Connector Family, Multiple Applications

Cable outer diameter ranges from 3mm to 14mm. The M16 covers smaller cables (3-10mm), while the M25 handles larger cables up to 14mm. This broad range ensures that you can use the same connector family across diverse applications—from solar panel wiring to industrial machinery.

Electrical Performance That Scales with Your System

The IP68 waterproof connector series delivers consistent electrical performance across all models, rated at 400V.

400V Rated Voltage — Suitable for Most Industrial Applications

All models are rated for 400V, making them suitable for a wide range of industrial and outdoor applications. This consistent voltage rating across the entire series means you don't need to worry about voltage compatibility when selecting different sizes.

7.5A to 24A Current Ratings — Matching Your Load Requirements

Current ratings range from 7.5A on the M16 models to 24A on the M20, M25, and M25-T models. The M16 is ideal for lower-current applications; the M20 and M25 handle higher-current loads. This range allows you to select the right connector for your specific power requirements.

Standardization That Simplifies Inventory

One of the most significant advantages of a multi-size connector family is inventory simplification.

Reducing SKUs with a Single Connector Family

Instead of stocking connectors from multiple manufacturers for different cable sizes, you can standardize on one series. The IP68 waterproof connector family covers M16, M20, and M25 thread sizes with 2P to 5P configurations. This reduces the number of SKUs in your inventory, simplifies ordering, and minimizes the risk of ordering the wrong part.

Easier Procurement, Lower Stocking Costs

With a single connector family covering multiple sizes, procurement is simpler and more efficient. You're dealing with one supplier, one quality standard, and one set of specifications. Over time, this standardization reduces administrative overhead and lowers the cost of maintaining spare parts inventory.

Applications Where Size Flexibility Delivers Value

The IP68 waterproof connector series serves multiple applications where different cable sizes and core configurations are required:

Solar Inverters and Energy Storage — Diverse Cable Requirements

In the solar energy industry and high-power energy storage equipment, cable sizes vary across different system components. The M16 handles smaller signal and control cables, while the M25 handles larger power cables. One connector family covers both.

Outdoor LED Lighting and Displays — Multiple Installation Scenarios

For outdoor LED lighting and outdoor LED displays, installations often require different connector sizes depending on the fixture type and location. The IP68 waterproof connector series provides the flexibility to match each installation's requirements while maintaining consistent IP68 protection.

Industrial Automation and Marine Equipment — One Solution for Multiple Systems

In automation machines, industrial PCs, and marine devices, equipment from different manufacturers often uses different cable sizes. The IP68 waterproof connector series allows you to standardize on one connector family across diverse equipment types.

Straight Answers on Connector Sizing

Q: What Thread Sizes Are Available in the IP68 Waterproof Connector Series?

A: The series is available in M16, M20, M25, and M25-T thread sizes, with core configurations from 2P to 5P.

Q: How Do I Choose the Right Connector for My Cable?

A: Match the connector's cable range to your cable's outer diameter and cross-section. M16 covers 3-10mm cables; M20 covers 5-12mm; M25 covers 5-14mm. The M25-T offers the widest cross-section support up to 6.0mm².

Q: Is the IP68 Rating Consistent Across All Models?

A: Yes. All models in the series carry the IP68 waterproof rating, providing dust-tight protection and the ability to withstand continuous immersion in water.

Get a Quote for Your Cable Management Project

A waterproof connector series that covers M16, M20, and M25 thread sizes in one family is the practical choice for engineers and procurement professionals who need to standardize without compromise. The IP68 waterproof connector series from Jixiang Connector delivers M16, M20, M25, and M25-T thread sizes with 2P to 5P configurations, cable ranges from 3mm to 14mm and cross-sections from 0.5mm² to 6.0mm², 400V rated voltage with 7.5A to 24A current options, PA66 flame-retardant housing and copper alloy contacts for long-term durability, and IP68 protection across all models for consistent sealing quality.

Whether you're wiring solar inverters, outdoor LED lighting, industrial automation, or marine equipment, the IP68 waterproof connector series offers the size flexibility and reliability that electrical professionals require. With over 15 years of experience in waterproof cable connector manufacturing and a commitment to quality testing that ensures every product meets high standards, Jixiang Connector provides the technical support and product quality you can count on.

Contact Jixiang Connector for a quote or technical consultation → their team can help you select the right model, thread size, and core configuration for your specific application requirements. Get a waterproof connector family that covers all your sizes.