In the rapidly evolving field of industrial automation, connector performance and reliability are critical to ensuring stable equipment operation and production efficiency. A new generation of connectors designated with the "MIN" prefix has emerged as a focal point in the industry, combining compact design, robust functionality, and exceptional adaptability. The MIN, MINH, and PMIN series not only inherit the legacy of the classic "Brad Mini-Change" connectors but also achieve significant breakthroughs in size, pin count, wire gauge, and power ratings, offering tailored solutions for demanding applications.

MIN Series: Precision Classification for Diverse Connectivity Needs

Commonly referred to as "Brad Mini-Change" or "Mini connectors" in the industry, the MIN series derives its name from its core advantages: compact dimensions and effortless connectivity. The series is meticulously categorized by physical size and pin count to meet increasingly specialized industrial requirements.

MIN Size I: Compact Design for Versatile Applications

The MIN Size I lineup includes 2, 3, 4, and 5-pin configurations along with a compact 6-pin variant. Notably, the 6-pin connector exists in two sizes, one of which falls under Size I. Key specifications include a 1-inch (25.4 mm) hexagonal receptacle and a 7/8-inch (22.2 mm) threaded plug interface. This space-efficient design makes it ideal for applications with spatial constraints but demanding reliability, such as sensors, actuators, and compact control units.

MIN Size II: Enhanced Performance for Greater Demands

Designed for applications requiring higher pin counts or greater connectivity capacity, the MIN Size II series features larger 6-pin, 7-pin, and 8-pin configurations. With a 1.125-inch (28.6 mm) hexagonal receptacle and 1-inch (25.4 mm) threaded plug, this series handles complex signal transmission and higher current loads, making it suitable for medium-scale automation equipment and control systems.

MIN Size III: High-Density Connectivity for Complex Systems

As the highest-capacity member of the family, MIN Size III supports 9, 10, 12, and 19-pin configurations. Its larger physical dimensions—1.25-inch (31.8 mm) hexagonal receptacle and 1.125-inch (28.6 mm) threaded plug—provide reliable high-density connections for sophisticated industrial systems including large robotics, precision machine tools, and modular control cabinets.

MINH Series: High-Voltage Solutions for Power Transmission

The MINH series addresses industrial requirements for high-voltage and high-current transmission, prioritizing safety and reliability in demanding power delivery applications.

MINH 3/4-Pin Connectors: Compact Powerhouses

Featuring the same 7/8-inch (22.2 mm) threaded interface as MIN Size I, the 3-pin and 4-pin MINH connectors maintain compact dimensions while delivering superior electrical performance. Supporting 14AWG wire gauge and rated for 600V, these connectors handle 18A (3-pin) and 15A (4-pin) currents respectively, making them ideal for motor drives, heating elements, and high-power sensors.

MINH 7-Pin Connector: Integrated Signal and Power Transmission

The 7-pin MINH variant utilizes a 1-inch (25.4 mm) threaded interface to accommodate a hybrid configuration: two 14AWG and five 18AWG conductors. This innovative design enables simultaneous high-power and low-power signal transmission within a single connector, rated for 300V and 5A. Applications include motor drives with sensor feedback and multifunctional automation modules.

PMIN Series: Heavy-Duty Performance for High-Current Applications

Engineered for high-current industrial environments, the PMIN series combines rugged construction with exceptional electrical characteristics to withstand extreme operational conditions.

PMIN 3/4-Pin Connectors: Industrial-Grade Power Delivery

Featuring a robust 1 3/8-inch (34.9 mm) threaded interface, the 3-pin and 4-pin PMIN connectors offer substantial connection space and mechanical durability. Available in 10AWG, 12AWG, and 14AWG wire gauges with 600V ratings, these units support currents up to 30A—making them indispensable for heavy machinery, high-power production lines, and applications requiring frequent high-load connections.

Conclusion

The MIN connector family—through its MIN, MINH, and PMIN series—delivers comprehensive solutions spanning from micro-sensors to high-power transmission systems. With precision engineering in size, pin configuration, and electrical specifications, these connectors demonstrate significant technological advancement while supporting industrial automation's evolution toward greater efficiency, reliability, and adaptability.