UL 514D Figure C.2 Small Test Probe

UL 514D Figure C.2 Small Test Probe (Model SM390)

The SM390 UL 514D Figure C.2 Small Test Probe is a precision testing instrument engineered to rigorously evaluate tamper-resistant mechanisms in electrical receptacles, ensuring compliance with UL 514D safety standards. Designed to simulate intrusion attempts by small foreign objects, this probe verifies that live parts within receptacles remain inaccessible under specified test conditions, safeguarding against accidental electrical contact.

Probe Tip Dimensions:

Length: 2.00 ±0.010 inches (50.8 ±0.254 mm) 

Diameter: 0.031 ±0.002 inches (0.787 ±0.051 mm) 

Corner Radius: 0.002 inches (0.051 mm) for precise edge geometry

Material: High-grade, corrosion-resistant stainless steel for durability and consistent performance.

Compliance: Meets CSA C22.2 NO. 42.1-13 ♦ UL 514D Figure C.2 requirements for receptacle safety testing.

Application & Functionality:

The SM390 probe is applied to cover plates of electrical receptacles with a controlled 2.2 N force, mimicking real-world tampering scenarios. During testing, the probe is manipulated in all possible orientations to assess accessibility to live parts. A detection system (e.g., ohmmeter, battery-and-buzzer circuit) is used to confirm whether contact with energized components is achieved, ensuring tamper-resistant designs meet stringent safety criteria.

Features: 

Precision Engineering: Tight tolerances (±0.010" length, ±0.002" diameter) guarantee repeatable and reliable test results. 

Durability: Stainless steel construction withstands repeated use in demanding testing environments. 

Versatility: Compatible with standard detection devices for seamless integration into lab or production-line workflows.

Ideal For: 

Validating tamper-resistant receptacles per UL 514D, NEC, and IEC standards.

Quality assurance in manufacturing of electrical outlets, enclosures, and safety-critical components.

Certification audits and third-party compliance testing. 

Ensure your products exceed safety expectations with the SM390 UL 514D Test Probe—a tool engineered to deliver accuracy, reliability, and unwavering adherence to global electrical safety standards.

Company introduction

HK LEE HING INDUSTRY CO., LIMITED are specialized in manufacturing special, custom built, test and measuring equipment for products testing as per international norms and offering calibration services and related information. Our products and services are used by research & development establishments, test laboratories, defense establishments, government institutions & manufacturing industries to fulfill the clients' requirements.

Main Products: Go No Go Gauges, IP Tester, Test Probe Kit, Impact Test Equipment, Test Probes, Spring Hammer, IEC 61032 Test Finger, AC Hipot Tester, IEC Test Probe, UL Test Probe, Material Flammability Tester, IP Code Tester, Impact Test Apparatus, Plugs and Socket Outlet Gauge, Security Testing Machine, Lamp Cap Gauge Tester, Lampholders Gauge Tester, Plug & Socket Tester, Electrical Safety Tester, LED Test Instruments, Environmental Test Equipment, Instrument Accessories, Weighing Sensor and More.

If you require equipment to test products such as home appliances, electrical accessories like switches, sockets, connectors, etc. industrial & road lighting luminaires, automobile lighting systems or related categories, we can provide the solutions you need.


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Website: https://www.china-gauges.com

Contact information

Contacts: Nina She

E-mail: sales@china-gauges.com

TEL: +86-755-33168386

FAX: +86-755-61605199

Phone: +86-15919975191

SKYPE: nina.she@outlook.com

Address: 1F Junfeng Building, Gongle, Xixiang, Baoan District, Shenzhen, Guangdong, China

ZIP: 518102

Website: http://www.china-gauges.com/