Specifications
Rated Voltage: 125V DC (power), 72V DC(signal)
Rated Current: 60A+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: Crimp
Flammability Rating: UL94V-0
Challenges
Battery-swapping systems, mobile equipment and removable-battery applications are evolving toward higher power, longer service life and easier operation. Customers require not only greater current capacity and larger wire sizes, but also connectors designed for frequent mating, compact spaces and different operating angles.
To support the continued evolution of customer product platforms, connectors must balance performance upgrades with interface compatibility. By retaining a proven mating interface and familiar operating experience, they can provide greater flexibility for future higher-power applications.
Positioning
KR Ultra is a high-performance extension of the KR 2+6 Series, designed for applications requiring higher current capacity, more frequent mating and an improved operating experience. While increasing current capacity, supported wire sizes and mating durability, it retains the same mating interface as the standard KR 2+6 Series, providing a compatible and flexible upgrade path for existing platforms.
Features
Higher Current Capacity
Current capacity is increased from 50A to 60–80A, supporting the power transmission requirements of higher-power equipment. The supported power-wire range is increased from 14–10 AWG for the standard KR 2+6 Series to 8–7 AWG, enabling higher-current transmission.
Ergonomic 135° Design
The new 135° overmolded plug provides a more ergonomic operating angle for easier handling and mating, while improving cable routing in space-constrained installations.
5,000 Mating Cycles
Mating durability is increased from 3,000 to 5,000 cycles, making KR Ultra suitable for battery swapping, charging and other applications requiring frequent connection and disconnection.
Compatible KR 2+6 Mating Interface
KR Ultra retains the same mating interface as the standard KR 2+6 Series, enabling cross-series mating, simplifying equipment upgrades and reducing the need for interface redesign.
Applications
Battery-Swapping Systems and Charging Cabinets, Removable Batteries and Battery Packs, Electric Two- and Three-Wheelers, Robots and AGVs, Mobile Power and Portable Energy Storage Equipment, Lawn and Garden Tools and Mobile Work Equipment, Other High-Current, High-Mating-Cycle Equipment
Q
Has Chogori's connectors passed UL 1977 or UL 2238 certification?
A
Some Chogori products are UL certified, including certifications to standards such as UL 1977 and UL 2238. The company actively implements the IATF 16949 Quality Management System and maintains stringent quality management standards. For certification details and certificates for specific product models, please contact our sales team for further information.
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.
