Soft plugging and unplugging, guaranteeing the maximum contact surface, small temperature rise, high anti-vibration and anti-shock capability, high dynamic contact reliability, and can be interoperable with similar products such as ELCON and FCI. Rectangular connector products are suitable for charging module interfaces, energy storage, UPS uninterruptible power supply, portable power supply, photovoltaic inverter power supply, replaceable power supply for electric bicycles, and power supply for balance vehicles inside charging piles. This series of connectors is a special product for rectangular connection module power interface, which is completely interchangeable with similar products of companies such as ELCON and FCI. It uses crown spring (Crown) jacks as contact parts, which makes the product have high dynamic contact reliability. This series currently has multiple models such as CNT01-15, 18, 19, 25, 29, 37, 52, etc., and the contact parts are gold-plated or silver-plated. Soft plugging and unplugging, while ensuring the maximum contact surface, the jack with crown spring structure has low contact resistance, small temperature rise, and high anti-vibration and anti-shock capability. There are a variety of pin/jack modules to choose from, and multiple modules can be mixed in the same connector according to needs. At the same time, it occupies a very small volume and has a very long service life, with up to tens of thousands of plug-in and unplug times.