PR121/P 2500A_ABB_PRODUCT_吉林易择科技技术发展有限公司

Technical Parameters Parameter Specification Product Name ABB PR121/P 2500 A Air Circuit Breaker Product Type Low‑Voltage Air Circuit Breaker (ACB) Protection Unit PR121/P electronic trip unit Rated Current (In) 2500 A Operational Voltage (Ue) Up to 690 V AC Number of Poles 3P or 4P Insulation Voltage (Ui) 1000 V Impulse Withstand Voltage (Uimp) 12 kV Breaking Capacity (Icu) Typically up to 75 kA – 100 kA (model dependent) Short‑Time Withstand Current (Icw) ~75 kA for 1 s (typical variant) Protection Functions Adjustable overload, short‑circuit, earth‑fault Mounting Format Fixed or Withdrawable Auxiliary Contacts Optional / Included (depends on configuration) Control & Indicators Trip indication and breaker position feedback Standards Compliance Applicable low‑voltage circuit breaker standards Typical Use Protection and switching in industrial/commercial electrical distribution

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DESCRIBE

The ABB PR121/P 2500A circuit breaker is a low‑voltage air circuit breaker (ACB) from ABB’s SACE Emax / E3N/E3S series designed for heavy‑duty electrical distribution protection. It combines a PR121/P electronic trip unit with a breaker frame capable of handling continuous 2500 A current. The trip unit provides adjustable overload, short‑circuit, and earth‑fault protection functions to safeguard electrical feeders, busbars, and connected loads in commercial and industrial switchgear applications.

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