問題：
What are the differences between the A and non A versions of the TCP0030, TCP312, TCP305 and P6021 current probes?
答案：
The TCP0030A, TCP312A, TCP305A, and P6021A probes are updates to their existing models. Updates include:
- Larger jaw diameter (5 mm vs. 3.8 mm) to accommodate larger wire sizes
- 3rd Party Certification for bare wire voltages up to 150 V CAT II - (Non-A models did not list a "bare wire" specification.)
- Increased reliability
常見問答集 ID 64841
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