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SYMC Dongfeng truck parts Electrically-operated window switch assembly-driver side 3750730-H0111

SYMC Dongfeng truck parts Electrically-operated window switch assembly-driver side 3750730-H0111

The Master Power Window Switch Assembly (Part No. 3750730-H0111) is an OEM-specified control module designed for use in Dongfeng commercial vehicles, particularly the Tianlong (Kinland), Tianjin (Kingrun), and Hercules (Dali Shen) series of heavy-duty trucks. Officially known as the Driver’s Side Master Control Switch, this component is mounted on the driver's door armrest and serves as the central interface for controlling multiple vehicle functions—primarily power window operation, and optionally central door locking and mirror adjustment depending on configuration.

Engineered for durability under demanding conditions—including frequent use, temperature extremes, and exposure to moisture—this switch features high-cycle micro switches with silver/gold-plated contacts, LED backlighting for night visibility, and flame-retardant housing materials. It plays a vital role in driver convenience, cabin ergonomics, and operational safety.

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Model:
3750730-H0111
Brand:
Dongfeng

Product Description

Attribute	Specification
Product Name	Master Power Window Switch / Driver Door Control Module
Manufacturer	Dongfeng Commercial Vehicles Co., Ltd. (OEM)
Primary Part Number	3750730-H0111
Alternative Names	Power Window Master Switch, 4-in-1 Window Control, Driver Door Panel Switch
Installation Position	Left-side door panel (driver side, LHD configuration)
Operating Voltage	24V DC (standard for Chinese heavy-duty trucks)
Control Functions
- Front Left Window	Up/Down (manual & one-touch down*)
- Front Right Window	Remote up/down control
- Child Lock / Window Lock	Prevents rear/passenger window activation
- Central Door Locking	Optional integrated button (varies by trim)
Housing Material	Flame-retardant ABS/PC composite engineering plastic
Surface Features	Anti-slip texture, translucent legends for backlit display
Connector Type	Multi-pin dual-row waterproof plug (typically 8–16 pins)
Application Class	Medium- to Heavy-Duty Commercial Trucks

Parameter	Value / Detail
Rated Voltage	24V DC nominal
Maximum Current per Circuit	5A – 10A (protected by upstream fuses)
Switch Type	Tactile micro-switches with positive feedback
Contact Material	Silver or gold-plated terminals — low resistance, anti-corrosion
Backlighting	Integrated low-power LEDs (white or blue light)
Illumination Voltage	24V (via constant power feed)
Operating Temperature Range	-40°C to +85°C (-40°F to +185°F)
Mechanical Life	≥ 200,000 actuations (per switch position)
Protection Level	IP65-rated (dust protected, water spray resistant)
Weight	~150–220 g