IEC 60745-2-5:2010 Figure 110 Accessibility Test Probe ‘b’

The IEC 60745-2-5:2010 Figure 110 Test Probe ‘b’ (12mm Diameter, 50mm Length) is a precision-engineered safety verification instrument designed for assessing accessibility to hazardous components in handheld motor-operated circular saws. This conductive probe simulates small object intrusion and accidental finger contact with rotating blades, mechanical gears, and live electrical parts. Constructed with a rigid 12mm-diameter stainless steel probe element (50mm working length) and an insulated polyamide handle, it applies controlled 10N force to evaluate casing barrier effectiveness during normal operation. Manufactured to exact IEC dimensional tolerances, this tool is essential for compliance with international safety standards including IEC 60745-2-5:2010, UL 60745-2-5, and GB/T 3883.2-5, ensuring risk mitigation from moving or energized components.

Specifications:
Tool Type: Test Probe ‘b’ (IEC 60745-2-5:2010 Figure 110; hazardous part accessibility verification instrument for handheld circular saws)
Probe Material: 304 stainless steel (high structural rigidity; maintains dimensional stability under test force; corrosion-resistant for laboratory and workshop environments)
Handle Material: Polyamide (PA) – fully insulated (electrical resistance ≥ 100MΩ); thermal stability up to 120°C; ergonomic non-slip grip for operation in varied workshop conditions
Key Dimensions:
– Probe Diameter: 12mm ± 0.1mm (simulates small object/finger contact scenarios)
– Probe Working Length: 50mm ± 0.2mm (penetrates critical gaps in circular saw protective casings)
– Total Length (Probe + Handle): 150mm ± 0.5mm (optimized for single-handed operation)
– Tip Geometry: Smooth, rounded edge (R6mm radius; prevents artificial damage to test specimens)
Applied Force: 10N ± 0.5N (replicates accidental contact force; aligns with IEC 60745-2-5:2010 safety criteria for circular saws)
Primary Function: Detects accessible hazardous components (blades, gears, live electrical parts) in circular saw assemblies; validates protective casing barrier effectiveness; ensures compliance with international tool safety standards including IEC, UL, and GB/T requirements

Test Procedures: