Specifications
Rated Voltage: 125V DC (power), 72V DC(signal)
Rated Current: 50A+5A
Withstand Voltage: 1,000V AC
Insulation Resistance: 100MΩ at DC 500V
IP Rating: IPX7 Mated, IPX7 Panel Side
OperatingTemperature: -40°C to 105°C
Salt Spray: 5% Nacl, 48H
Mating Cycle: 3,000 Cycles
Wire Gauge: Power 10AWG/Max, Signal 20AWG/Max
Wire Processing: Solder
Flammability Rating: UL94V-0
Challenges
In battery-swapping systems, removable-battery equipment, mobile devices and other high-frequency connection applications, connectors often need to support both charging/discharging and signal transmission. Repeated mating, angled insertion and removal, cable flexing and equipment vibration can cause loose connections or terminal damage. Rain, moisture and accidental contact with live terminals also create higher requirements for ingress protection and operational safety. Meanwhile, different equipment structures and space constraints require flexible mounting, cable-routing and locking options.
Positioning
The KR 2+6 Series is a family of 50A hybrid power and signal connectors designed for battery swapping, removable batteries and mobile equipment. The series combines high mating durability, water resistance, touch-safe protection, vibration resistance and ease of operation. Multiple plug, receptacle, mounting and locking configurations provide flexible connection solutions for different equipment designs.
Features
50A Hybrid Power and Signal Connection
Two power contacts and six signal contacts integrate power transmission and signal communication into a single interface, reducing connector count and simplifying system design.
Reliable Water and Touch Protection
The battery-side receptacle and mated connection can meet IPX7 requirements. IPXXB touch-safe power contacts help reduce the risks of water ingress and accidental contact with live parts.
High Mating Durability
Supports up to 3,000 mating cycles, making it suitable for battery swapping, charging and removable-battery applications requiring frequent connection.
Resistance to Angled Mating and Vibration
The robust structure withstands angled insertion and removal as well as equipment vibration, reducing the risk of terminal damage, loosening and unstable contact.
Intuitive and Secure Locking
The locking version features an intuitive latch that guides operation and helps users confirm secure engagement. A non-locking version is also available for fast connection and disconnection.
90° Cable Exit and Flex Durability
The 90° cabinet-side plug is suitable for space-constrained installations and can withstand up to 5,000 cable-flex cycles, improving durability under repeated bending and handling.
Multiple Standard Configurations
Diamond- and square-flange receptacles, together with locking and non-locking plugs, accommodate different mounting spaces, cable-routing requirements and operating preferences while reducing the need for customization.
Applications
Electric two- and three-wheeler battery swapping, Robot and AGV charging or battery swapping, Battery-swapping and charging cabinets, Removable batteries and mobile power equipment, Portable energy storage systems, Lawn and garden equipment, Industrial equipment requiring frequent connection and combined power and signal transmission
Q
Is it normal for the housing of a high-current connector to become very hot or even too hot to touch? How should this be handled?
A
High-current connectors may experience some temperature rise under rated load, but they should not become excessively hot or too hot to touch.
Common causes of excessive heating include:
The actual operating current exceeding the rated current
Excessive contact resistance
Poor terminal crimping or undersized cables
Loose or oxidized internal terminals or contacts
Recommended actions: Stop operation immediately and check whether the contact resistance exceeds the specified range. Inspect the terminal crimping points for looseness or oxidation. If a problem is identified, replace the affected components, reduce the load, or re-crimp the cable as required.
Q
LED street lights installed in coastal areas require connectors with additional UV resistance and anti-aging treatment. Is this necessary?
A
Yes. Coastal areas are exposed to strong UV radiation and high salt-spray concentrations, so connectors should use UV-resistant and flame-retardant materials, such as PA66 nylon housings.
Chogori’s M15 waterproof connectors are designed for outdoor LED street lighting and can withstand heavy rain, vibration, and UV exposure, making them suitable for applications such as highways and rural roads. The materials are sourced from high-quality plastics with UL Yellow Card certification, helping ensure reliable outdoor performance for 5–10 years.
Q
What are the differences in test conditions between IP67 and IP68 for waterproof connectors? Does IP69K protection also support high-pressure and high-temperature water-jet testing?
A
IP67 protects against water ingress when immersed in fresh water up to 1 meter deep for 30 minutes, providing protection against accidental immersion.
IP68 is designed for more demanding immersion conditions. It can withstand prolonged immersion at a depth of 1 meter, with the specific duration defined by the manufacturer and potentially lasting 7 days or longer.
IP69K and IP68 involve different protection tests. IP69K is designed to withstand high-pressure, high-temperature water jets, but it does not fully cover immersion protection.
Some Chogori connectors are available with IP69K protection.
Q
What are the specific rated current and voltage ranges of the Large Pro Series connectors?
A
The Large Pro Series supports up to 300V and 50A, offering high reliability and user-friendly design. It is also fully compatible with the existing Large 2+4 Series.
Q
Is there an integrated connector recommended for outdoor LED displays that can transmit both power and signals simultaneously?
A
We recommend an integrated power and signal solution, such as the Large Series multi-pin connectors, which combine power delivery and signal transmission in a single connector for fast, one-step installation.
The Standard and Middle Series also support both power supply (e.g., 300V/20A) and data transmission, while offering IP67 protection and secure thread-locking or push-lock mechanisms.
