Automotive Waterproof Connectors Receptacle Housing of 2.5mm Pitch

Most industrial waterproof connectors are oversized, hard to assemble and costly. HRB 2.5mm pitch right angle wire to board waterproof connector (Model M2532/M2531R) is developed as a mini-size low-cost waterproof interconnect solution for automotive & outdoor electrical systems.

With IP67 waterproof and dustproof grade, solid rubber sealing and double locking mechanism, it guarantees stable sealing and anti-loosening performance under vibration, humidity and temperature fluctuation. Multiple pin counts from 2×9 to 2×20 satisfy diversified wiring demands of automotive cameras, vehicle batteries, electric two-wheelers and outdoor machinery.

	Part name	Part number
Wire side	Receptacle housing	M2532 Series
	Terminal	T2532 Series
	Applicable wire	AWG16 to AWG22
PCB side	Right Angle DIP Header	M2531R Series

P/N Definition

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M2532-2xN-B

     ①       ② ③    

①: HRB item series number

②: Number of pins per row: 9/13/16/17/20

③: HSG Color: B: black

Core Features

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• IP67 waterproof rating compliant with IEC 60529, fully dustproof & water-resistant

• Integrated solid rubber seal ring, reliable wire & mating-side sealing

• Double-spring phosphor bronze tin-plated terminals, stable low contact resistance

• Dual lock design: housing-to-terminal lock + inner housing lock, anti-drop during vibration

• Compact right-angle PCB header, saves equipment internal installation space

• Wide temperature range: -40℃ ~ +125℃, adapts vehicle harsh working conditions

• Multiple pin options: 2×9, 2×13, 2×16, 2×17, 2×20 positions

Exploded View

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This exploded view displays the full assembly of HRB M2532 waterproof connector. Adopting multi-layer sealing and front TPA secondary terminal locking, it delivers reliable IP67 performance against vibration, moisture and dust for harsh industrial and new energy applications.

 

Application Scenarios

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• Electric vehicle built-in battery waterproof connection

• Electric motorcycle internal wiring

• Automotive built-in camera waterproof harness

• Outdoor monitoring & outdoor waterproof electrical equipment

• Small industrial machinery damp environment wiring

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Q: What is the durability test requirement for M2532 series connector?

A: The mated connector shall complete 50 mating/unmating cycles at a maximum speed of 10 cycles per minute before environmental tests. After the test, the maximum contact resistance shall not exceed 10mΩ.

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Q: What is the temperature rise requirement of M2532 connector?

A: With the connector fully mated, pass maximum rated current and measure the contact temperature rise. The maximum allowable temperature rise is 30°C.

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Q: What is the vibration test requirement for M2532 series connector?

A: The mated connector is tested with 1A DC applied. Test frequency sweeps 50~1000Hz within 10 minutes, 3 hours for each X/Y/Z axis. Cable shall be fixed during test.

Requirements after test: No damage on appearance; contact resistance ≤10mΩ; discontinuity ≤1 microsecond max.

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Q: What is the water resistance test requirement for M2532 series connector?

A: The connector is placed in a test chamber for cyclic water spray test.

- Shower ON: 20 min at room temperature

- Shower OFF: 40 min at 100°C

- Total 48 cycles.

Pass criteria: No damage on appearance; contact resistance ≤10mΩ.

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Q: What is the humidity test requirement for M2532 series connector?

A: Fully mated connectors are exposed under 85±2°C, 90~95% relative humidity for 500 hours.

Acceptance criteria: No damage on appearance; contact resistance ≤10mΩ.