GM series circular electrical connectors are mainly divided into two major categories. One is the defense and industrial grade, characterized by high density, miniaturization, and good air tightness. It is primarily used in applications with stringent volume and reliability requirements, such as aviation and weaponry, and is interchangeable with the Russian MP1 series. The other is the railway and heavy-duty industrial grade, which features a modular design and a high protection rating (e.g., IP67). It can flexibly combine power, signal, and data modules and is mainly applied in harsh industrial environments like railway vehicles, mining, and automation equipment.
This GM series circular electrical connector is chosen primarily because it achieves high-density and high-reliability connections within a compact space, features good air tightness and dual locking mechanisms, and is interchangeable with the Russian MP1 series, making it an ideal fit for narrow installation environments in demanding fields such as aviation and weaponry.
| Parameter | Specification |
|---|---|
| Contact Size | φ0.6mm |
| Operating Temperature | -55℃ ~ +85℃ |
| Relative Humidity | Up to 95% at 40℃ |
| Rated Current | 1A |
| Contact Resistance | ≤10mΩ |
| Vibration | Frequency: 10 ~ 500Hz, Acceleration: 196m/s² |
| Shock | 490m/s² |
| Constant Acceleration | 490m/s² |
| Air Tightness | Air leakage rate ≤ 0.027Pa·cm³/s under pressure of 9.806×10⁴Pa (fixed end only) |
| Mechanical lifespan | 300 times |
Rated Voltage, Withstand Voltage, Insulation Resistance
| Operating Condition | Rated Voltage (V) | Withstand Voltage (AC) V | Insulation Resistance (MΩ) |
|---|---|---|---|
| Normal Temperature | 200 | 700 | ≥500 |
| Damp Heat Condition | 200 | 300 | ≥20 |
High density, small size
Push-pull coupling and threaded coupling
Good air tightness
Solder termination for wires
Interchangeable with Russian MPI and MPIH type electrical connectors(Conforms to technical specification "ГЕО.364.184.ТУ")
Suitable for locations with limited installation space, primarily used in industries such as aviation and weaponry
Implemented enterprise standard: 21E0.204.117
High density, small size: Enables more connections within limited installation space.
Dual coupling methods: Supports push-pull coupling and threaded coupling, allowing flexible selection based on vibration conditions.
Good air tightness: Effectively prevents the ingress of gas and moisture, adapting to environments with significant pressure changes.
Solder termination: Utilizes solder connection for wires, ensuring stable and reliable electrical performance.
Russian standard compatibility: Interchangeable with Russian MPI and MPIH type electrical connectors, conforming to technical specification ГЕО.364.184.ТУ, facilitating maintenance and upgrades of older equipment.
Suitable for confined spaces: Specifically designed for locations with limited installation space, primarily used in industries such as aviation and weaponry.
Adherence to enterprise standard: Strictly designed, manufactured, and inspected according to enterprise standard 21E0.204.117.
Structural Design: Features a high-density, compact layout suitable for installation in confined spaces.
Coupling Methods: Supports both push-pull and threaded coupling types, offering flexible connection options.
Sealing Design: Possesses good air tightness to prevent the ingress of gas and moisture.
Termination Method: Utilizes solder connection for internal wires, ensuring stable and reliable electrical performance.
Compatibility Design: Interchangeable with Russian MPI/MPIH type connectors, conforming to technical specification ГЕО.364.184.ТУ.
Application Orientation: Specifically designed for industries with space constraints and high reliability requirements, such as aviation and weaponry.
Standard Compliance: Strictly manufactured and inspected according to enterprise standard 21E0.204.117.

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Q:Is it interchangeable with Russian MP1/MP1H?
A: Fully interchangeable. Conforms to ГЕО.364.184.ТУ technical specification, with identical interfaces and electrical performance. No equipment modification needed.
Operating temperature -55~+125℃, vibration resistance 196m/s², shock resistance 735m/s²
Q: Will it loosen under vibration?
A: No. Threaded coupling is recommended. It withstands vibration tests of 10-500Hz at 196m/s² acceleration.
Q:How are wires terminated? Is maintenance easy?
A: Uses solder connection for high reliability and vibration resistance. Maintenance should be performed by professionals.
Q: Can it transmit signals?
A: Yes. Railway industrial grade can mix power, signal, and data modules. Defense grade's high-density contacts also support signal transmission.
Q:What are the rated current and contact resistance?
A: For φ0.6mm contacts: 1A rated current, contact resistance ≤10mΩ, ensuring low loss and low heat generation.
The GM series circular electrical connectors offer two main product lines. The defense-grade products provide high-density, high-reliability connections within compact spaces and are compatible with Russian standards. The railway industrial-grade products feature modular and flexible configurations, IP67 high protection, and high-speed data transmission capabilities. Together, these two series meet a wide range of application needs, from the stringent requirements of defense sectors like aviation and weaponry to harsh industrial environments such as rail transportation and energy facilities.
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