UL 499 Figure 7.4 PA180 Test Probe for Hand-supported Enclosure

UL 499 Figure 7.4 PA180 Test Probe is a specialized safety tool designed for hand-supported enclosures of portable electric heating appliances (e.g., irons, hair dryers). It features a rigid stainless steel probe body to simulate accidental user contact—critical for verifying if hazardous live parts (e.g., heating elements, internal wiring) remain inaccessible through enclosure gaps. Paired with an insulating nylon handle for tester safety, it applies a precise 10N thrust to mimic real-world pressure. 

Specifications:
Probe Type: UL 499 Figure 7.4 PA180 Test Probe (for hand-supported enclosures of electric heating appliances)
Probe Material: Stainless steel (rigid, corrosion-resistant; maintains shape under 10N thrust)
Handle Material: Nylon (fully insulating, heat-resistant up to 120°C; non-slip grip for controlled operation)
Key Dimensions:
– Total length: 50.8 mm (2 INCHES)
– Head length: 3.2 mm (1/8 INCH)
– Test Probe Diameter: 6.4 mm (1/4 INCH)

Test Procedures:
1. Inspect the probe for damage (e.g., bent stainless steel body, cracked nylon handle) to ensure accuracy.
2. Power on the hand-supported heating appliance (e.g., iron) and let it reach normal operating mode.
3. Hold the insulating handle and align the probe tip with enclosure gaps (e.g., handle seams, control slots).
4. Apply steady 10N thrust to the probe toward internal components—maintain force for 5 seconds.
5. Check if the probe touches any hazardous parts (e.g., heating elements, exposed wiring).
6. Record whether the appliance meets safety requirements (pass/fail) and power off.

Applications:
1. Safety testing of hand-held electric irons (per UL 499:2023 Figure 7.4) to block enclosure access to heating elements.
2. Quality control for hand-held electric heaters (small personal models) during manufacturing.
3. Post-production audits of portable electric soldering irons (hand-supported enclosures) to meet UL 499 standards.

PA180 Test Probe for Hand-supported Enclosure of UL 499 Figure 7.4