Stepped Insert Connectors
INTE-AUTO stepped insert connectors feature a half-moon insert design for easy alignment and a push-pull self-latching mechanism for fast and secure mating. Available in 2 to 18 contacts, with multiple plug, receptacle, mounting, and cable configurations, the series provides flexible signal and power connection solutions for professional equipment.

Stepped Insert Connectors for Reliable and Easy Mating
INTE-AUTO stepped insert connectors combine a half-moon insert design with a push-pull self-latching mechanism for quick, secure, and reliable connection. The stepped insert provides clear mechanical orientation for easy alignment during mating, making the connector particularly convenient for equipment requiring frequent connection and disconnection.
Available in 2 to 18 contacts, with multiple plug, receptacle, mounting, and cable configurations, these compact metal connectors provide reliable signal and power connections for test & measurement, industrial, audio-video, medical, and other professional equipment.
S Series Half-Moon Connectors - Stepped insert design for aviod mismating
Three Stepped Insert Connector Series
INTE-AUTO provides three stepped insert connector series — S Series, E Series, and 2C Series. All three feature the characteristic stepped / half-moon insert design and push-pull self-latching mechanism, while each series is designed for different installation and environmental requirements.
S Series — Standard Stepped Insert Connectors:
Designed for indoor and protected environments, the S Series provides a compact and reliable solution for general signal and power connections where waterproof sealing is not required.
E Series — Waterproof Stepped Insert Connectors:
Designed for applications requiring higher environmental protection, the E Series combines the stepped insert design with a sealed connector structure for outdoor, wet, and demanding environments.
2C Series — Short-Size Stepped Insert Connectors:
The 2C Series features a shorter connector body for equipment where installation depth and available space are limited, while retaining the stepped insert and push-pull connection concept.
Quick Selection:
| Requirement | Recommended Series |
|---|---|
| Indoor / protected environment | S Series |
| Waterproof / outdoor environment | E Series |
| Limited installation depth / short size | 2C Series |
Find the Right Stepped Insert Connector for Your Application
Choose from S Series, E Series, and 2C Series stepped insert connectors for indoor, waterproof, and space-limited applications. Send us your part number, drawing, or application requirements, and our team will help identify the right connector configuration or custom cable assembly.
Stepped Insert Connector Applications

Reliable multi-contact connections for oscilloscopes, analyzers, data acquisition equipment, laboratory instruments, and other professional test and measurement systems

Secure signal and power connections for industrial controllers, monitoring systems, control units, and other professional electronic equipment.
Compact multi-contact connections for semiconductor testing, inspection, measurement, and related electronic equipment requiring reliable and frequent mating.

Quick and secure connections for professional audio equipment, recording systems, amplifiers, mixers, and other professional sound equipment.

Compact push-pull connections for professional cameras, monitors, recording equipment, and other video systems requiring frequent connection and disconnection.

Compact multi-contact connections for diagnostic, monitoring, testing, and other professional medical equipment requiring secure and easy-to-operate interfaces.
Unique Features of Stepped Insert Connectors
Easy mechanical orientation and connector alignment.
Fast connection and disconnection with secure locking.
Stepped insert design helps guide the connector into the correct mating position.
Multiple 2 to 18 contacts configurations for different signal and power requirements.
Stepped Insert Connector FAQs
Start with the operating environment and available installation space.
Choose the S Series for standard indoor or protected equipment where waterproof sealing is not required. Choose the E Series when the connector needs additional environmental protection against water, moisture, or dust. Choose the 2C Series when reducing connector length or installation depth is a priority.
After selecting the series, confirm the contact configuration, electrical requirements, cable size, mounting method, and mating interface.
The main difference is the environmental protection requirement.
The S Series is intended for indoor and protected applications, while the E Series provides a sealed connector solution for applications requiring waterproof protection.
Both use the characteristic stepped / half-moon insert concept, so engineers can select the appropriate series according to the equipment’s operating environment.
Choose the 2C Series when the equipment has limited installation depth or when a shorter connector body is required.
Before selecting 2C, confirm the available installation space, contact configuration, cable diameter, mating interface, and environmental requirements to ensure that the short-size design meets the complete application requirements.
INTE-AUTO stepped insert connectors are available in 2 to 18 contacts.
Selection should not be based on contact count alone. Engineers should also consider current, voltage, wire gauge, cable diameter, signal or power requirements, connector size, and available installation space.
If you provide these parameters, INTE-AUTO can help identify the appropriate contact configuration.
Yes. The stepped / half-moon insert provides mechanical orientation that helps guide the plug and receptacle into the correct mating position.
This makes the design useful for equipment where the connector interface is difficult to see or access directly, as well as applications requiring frequent connection and disconnection.
First determine whether the restriction is caused by connector length, panel depth, rear clearance, or cable routing direction.
If installation depth is limited, the 2C short-size series may be appropriate. If cable routing is the primary issue, a right-angle connector configuration may provide a better solution.
Providing an equipment drawing or available installation dimensions allows our team to evaluate the most suitable configuration.
Yes. INTE-AUTO provides corresponding S Series and E Series stepped insert connector solutions.
For replacement projects, send us the existing part number, photo, drawing, datasheet, mating connector, or sample. Our team will check the series, shell size, contact arrangement, contact gender, mounting configuration, cable size, and mating interface before recommending the corresponding INTE-AUTO model.
Yes. INTE-AUTO can integrate S, E, and 2C Series connectors into customized cable assemblies.
Cable assemblies can be produced according to your connector configuration, cable type, wire gauge, cable length, pin assignment, shielding, bend relief, labeling, and equipment-side termination requirements.
For a new equipment design, provide:
Operating Environment · Number of Contacts · Current & Voltage · Wire Gauge · Cable OD · Plug or Receptacle · Mounting Method · Available Installation Space · Required Quantity
For a replacement project, send:
Original Part Number · Connector Photo · Drawing · Datasheet · Mating Connector
Our team can then determine the appropriate S Series, E Series, or 2C Series configuration and recommend the corresponding INTE-AUTO model.