350A MSD maintenance switch introduction
SS3 series products are manual maintenance switch connectors, suitable for battery packs in energy storage systems, and are devices for manually cutting off power supply in high-voltage systems. The power terminals and high-voltage interlock signal terminals of the product all use chip contacts. The plug is equipped with a power-assisted handle locking structure and a two-stage separation structure. It has high-voltage interlock function and CPA function. After the plug is mated, it meets the IP68 waterproof level.
The shell of the product is made of double-hex nylon + glass fiber material, the contact parts are copper alloy plated with silver, and the connecting copper bar is connected to the preset M8 stud of the socket. It has the advantages of convenient operation, reliable connection, small size, low cost, and meets the requirements of UL4128 certification.
350A MSD maintenance switch opening size
Parameters of SS3 350A MSD energy storage system maintenance switch
| Mechanical performance | |
| Mechanical life | 200 times |
| Vibration level | QC/T 1067.1-2017 V1 |
| Connection method | Bolted |
| Electrical performance | |
| Rated current | 350A |
| Rated voltage | 1500V |
| Voltage withstand | Not less than 5000V DC |
| Insulation resistance | ≥5000 MΩ (normal temperature and humidity); ≥200MΩ (damp heat) |
| Environment performance | |
| Protection class | IP68(1m water depth 24h) |
| temperature class | -40℃~125℃ |
| Flammability rating | UL94 V-0 |
| Salt spray level | Neutral salt spray 480h (after the socket is installed and the plug and socket are fastened) |
| Material Description | |
| Insulation parts | 25% glass fiber nylon |
| Sealing parts | Silicone Rubber |
| Contact part | Silver-plated copper alloy for power terminals; tin-plated copper alloy for signal terminals |
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