IEC 60529 IP3X Test Probe C (2.5mm, 3N) Manufacturer – BONAD
Key Features
- Fully compliant with IEC 60529 & IEC 61032 Figure 3
- Precision 2.5mm diameter probe for accurate testing
- Standard 3N force application (±10%)
- Calibration certificate available (ISO/IEC 17025 optional)
- Durable stainless steel construction
- Fast delivery and customization support
What is IP3X Testing?
IP3X testing verifies whether an enclosure can prevent the ingress of solid objects with a diameter of 2.5mm or larger.
It also ensures that tools or similar objects cannot access hazardous internal components under defined test conditions.
This level of protection is commonly required for electrical appliances, industrial enclosures, and safety-certified equipment.
IP3X Test Method (According to IEC 60529)
Test Conditions
- Test probe: Test Probe C (IEC 61032 Figure 3)
- Probe diameter: 2.5mm
- Applied force: 3N ±10%
- Test directions: All possible access points
Pass Criteria
- The probe must not touch hazardous parts
- No ingress of objects ≥2.5mm
The test ensures that small tools or objects cannot penetrate the enclosure and reach dangerous components.
Applications
- Electrical appliance testing
- Household equipment certification
- Laboratory compliance testing
- Manufacturing quality control
- Third-party testing organizations
IP Rating Comparison
| IP Rating | Probe Type | Diameter | Force | Protection Against |
|---|---|---|---|---|
| IP1X | Sphere | 50mm | 50N | Back of hand |
| IP2X | Finger | 12.5mm | 10N | Finger access |
| IP3X | Rod (Probe C) | 2.5mm | 3N | Tools |
| IP4X | Wire | 1mm | 1N | Small wires |
Technical Parameters:
| Model | Item name | Standatds | Parameters | Pictures: |
| BND-C | test rod/test probe C,
2.5mm diameter |
IEC61032
IEC60335 |
Test Probe Length:100mm
Test probe Diameter:2.5mm Dam-sphere Diameter:3.5mm Handle Diameter:10mm Handle Length:100mm |
![]() |
| BND-CF | test rod/test probe C with 3N force | Test Probe Length:100mm
Test probe Diameter:2.5mm Dam-sphere Diameter:3.5mm Handle Diameter:10mm Handle Length:100mm With force: 3N |
![]() |
Tests for protection against solid foreign objects indicated by the first characteristic numeral specified in IEC60529.
| First No. | Addit. Letter | Access Probe | test force |
| 3 | C | ![]() |
3N±10% |
Acceptance condition:
Table 7 – Test means for the tests for protection against solid foreign objects

Acceptance conditions for first characteristic numerals 3, 4:
The protection is satisfactory if the full diameter of the probe specified in table 7 does not pass through any opening.
NOTE:
For the first characteristic numerals 3 and 4 the probes specified in table 7 are intended to simulate foreign objects which may be spherical. Where an enclosure has an indirect or tortuous entry path and there is any doubt about ingress of a spherical obiect capable of motion, it may be necessary to examine drawinas or to provide special access for the object probe to be applied with the specified force to the opening(s) where ingress has to be checked.
Pictures of test pin C:


Why Choose Our IP3X Test Probe?
- Strict compliance with international standards
- High precision machining with tight tolerance control
- Optional third-party calibration reports
- Custom force and handle design available
- Exported to over 30 countries
- Reliable quality for long-term use
FAQ – IP3X Test Probe C
1. What is an IP3X test probe used for?
It is used to verify protection against access to hazardous parts and solid objects larger than 2.5mm.
2. What force is applied in IP3X testing?
A standard force of 3N (±10%) is applied according to IEC 60529.
3. Do you provide technical support and after-sales service?
Yes, we offer full pre-sales guidance and post-sales support, including technical consultation, usage instructions, and calibration assistance.
4. What is the difference between IP2X and IP3X?
IP2X protects against finger access (12.5mm), while IP3X protects against tool access (2.5mm).
5. Do you provide calibration certificates?
Yes, ISO/IEC 17025 calibration certificates are available upon request.
Request a Quote
Looking for reliable IP3X testing equipment?
- Get a quotation within 24 hours
- Request calibration certificate
- Technical support available
Contact us today to ensure your products meet IEC 60529 requirements.




