company blog about Long-term Supply Of Amphenol MINI-MSDM350 Automotive Connector - 350A Fuse High Voltage Maintenance Disconnect Plug

[Mingjiada Electronics · Product Spotlight] Long-term stock: Amphenol MINI-MSDM350 automotive connector — 350 A fuse high-voltage maintenance disconnect plug

MINI-MSDM350 Product Description
The MINI-MSDM350 is a miniature manual service disconnect (Mini MSD) plug launched by Amphenol, specifically designed for PHEV/EV high-voltage battery packs. The MINI-MSDM350 integrates a 350 A fuse in a compact space, enabling instant disconnection of faulty circuits at 690 V AC to protect battery safety and occupant safety. The MINI-MSDM350 features a front-mounted latch installation, allowing for quick ‘quick-disconnect’ power disconnection without special tools, meeting the rapid service needs of vehicle aftermarket repairs.

MINI-MSDM350 Core Features
High Power Rating: The MINI-MSDM350 is rated at 350 A / 690 V AC and compatible with 1000 V DC peak.
Integrated Fuse: The MINI-MSDM350 incorporates a 350 A fuse, eliminating the need for secondary selection and reducing BOM complexity.
High-voltage interlock: The MINI-MSDM350 integrates an HVIL circuit, which disconnects power instantly when the plug is removed to prevent arcing.
Hot-swap lifespan: The MINI-MSDM350 supports ≥100 live plug-and-play cycles, with reliability validated at the vehicle level.
Environmental Adaptability: The MINI-MSDM350 operates at temperatures ranging from –40 °C to +125 °C, with IP67 protection and vibration resistance up to 15 g.

MINI-MSDM350 Key Parameters
• Rated Current: 350 A
• Rated Voltage: 690 V AC / 1000 V DC
• Insulation resistance: >200 MΩ (1000 V DC)
• Contact resistance: <0.2 mΩ
• Mechanical life: ≥100 insertion/removal cycles
• Fuse breaking capacity: 50 kA @ 1000 V DC
• Flame retardant rating: UL94 V-0
• Interface locking: Level 2 CPA structure, anti-misoperation unlocking

MINI-MSDM350 Typical Applications
• Main circuit protection for high-voltage battery packs in pure electric passenger vehicles
• Maintenance switch for plug-in hybrid vehicles
• High-voltage distribution units for energy storage systems in commercial buses and heavy-duty trucks
• Safety gate for battery quick-change mechanisms in battery swapping stations
• Maintenance ports for energy storage cabinets and DC bus systems in electric vessels

Contact Information
Shenzhen Mingjiada Electronics Co., Ltd.
Phone: +86 13410018555 (Mr. Chen)
Email: sales@hkmjd.com
Website: https://www.integrated-ic.com/