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"G3 Series Micro Switch Dimension and Mounting Hole Guide (Including 2D/3D Drawings)"

2026-04-13

1. Why Dimension Drawings Are Important

When selecting a micro switch, accurate dimension drawings are crucial for mechanical design and PCB layout. The G3 series micro switches feature a compact structure, widely used in space-constrained applications such as automotive door locks, electric push doors, and industrial control systems.
(1) Dimension drawings ensure:

(2) Precise alignment between the switch and installation location

(3) Proper actuator travel design

(4) Avoidance of installation interference or unstable mounting

(5) Correct implementation of waterproof sealing

2. Main Models Dimensions and Mounting Structures

Model	Product Name	Mounting Structure	Dimensions L×W (mm)	Mounting Holes	Features
G303-130P00A53	Ultra-compact waterproof /dustproof micro switch	A2 left positioning post	13.3 × 5.3	2-Ø2.60	Prevents rotation, ensures accurate actuation, suitable for outdoor waterproof devices
G303A-180P00A23C	Micro switch replacement	Customizable	13.1 × 8.0	2-Ø2.95	Supports roller/lever/button actuators, ideal for device repair or replacement
G303-130K00A6	High-precision long-life trigger switch	PCB pins	12.25 × 5.0	2-Ø2.20 ±0.1	Suitable for automated soldering, robots, and production lines
G303-130S00A52	Automotive micro switch	A2 non-positioning post	10.7 × 5.3	Shell clip / bracket fixing	Modular installation, space-saving, vibration-resistant design
G306-150S41AA	High-precision micro switch	PCB pins	16.3 × 5.1	2-Ø4.53	Suitable for home appliances, mechanical and electrical life up to 300,000 cycles

Click the model to visit the official website for detailed specifications.

G303-130P00A53 Drawing.png

G303-130P00A53 Drawing

3. Terminal Types and Soldering Requirements

Terminal Type	Soldering Method	Process Requirements
Tab type	Hand soldering	≤350°C, ≤3 seconds
PCB pins	Wave soldering	Preheat 100–130°C, solder 260°C ±5°C, 3–5 seconds
Pre-wired	No soldering	Direct connector connection

Excessive soldering temperature or time may damage internal contacts.

4. Installation Guidelines

To ensure reliable operation of the G3 Series IP67 waterproof micro switch, follow these installation recommendations:

Correct Actuation Direction

The G3 micro switch uses an angled push structure. Ensure the actuator presses vertically along the button axis.

Incorrect: Side pressing → may deform internal contacts, reducing lifespan

Correct: Press along the center axis to ensure stable switch operation

Actuation Travel Control

Pressing travel should reach 70–80% of the total travel:

Insufficient travel → contacts may not engage reliably

Excessive travel → may damage the housing or internal spring

Waterproof Sealing (IP67)

To maintain IP67 waterproof and dustproof performance:

Install on a flat surface, avoid bumps or recesses affecting the seal

Use sealing gaskets or sealant if necessary

Seal the cable outlet to prevent water ingress along wires

5. How to Obtain 2D/3D Drawings

G3 series provides:

2D Engineering Drawings (DWG/PDF): dimensions, tolerances, mounting hole coordinates, terminal dimensions

3D CAD Models (STEP/IGES): directly importable into design software

Acquisition methods: Download from the official ZINGEAR website, contact sales engineers, or apply online.

6. Technical Support and Sample Services

Free 2D/3D drawings download

Installation guidance

Sample requests (physical verification)

Custom development (terminals, wiring, actuation force)

[Click here for support and samples]

7. FAQ

Q1: What is the operating force of G3 micro switches?
A1: Standard models have 180g operating force, with clear tactile feedback and anti-misoperation. Custom models can be adjusted according to the mechanical design.

Q2: What is the difference between positioning and non-positioning posts?
A2: Positioning posts prevent rotation and ensure accurate actuation; non-positioning posts are suitable for modular installation and save space.

Q3: Can IP67 waterproof micro switches be submerged for long periods?
A3: No. IP67 guarantees short-term immersion (1m deep, 30 minutes). Long-term immersion may cause failure.

Q4: Can PCB pin terminals be hand-soldered?
A4: Not recommended. PCB pins are suitable for wave soldering. Hand soldering may cause unstable connections or damage internal contacts.

Q5: How to get complete 2D/3D drawings?
A5: Download from the official website, contact a sales engineer, or apply online for DWG/PDF and STEP/IGES files.

Tags: micro switch size diagram IP67 waterproof micro switch automotive micro switch micro switch drawing download ZINGEAR micro switch size diagram