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Electronic MCCB Molded Case Circuit Breaker Adjustable Trip 3p/4p 125A-1250A. Electronic Adjustable Protection: With electronic trip unit, adjustable overload/short-circuit parameters for precise protection and reliable operation. High Current & Stability: Rated current range from 125A to 1250A, copper-based contacts for excellent conductivity and low heat generation. Flame-Retardant & Durable Housing. Multi-Pole & Wide Application: Available in 3P/4P configurations, ideal for low-voltage power distribution, industrial control and heavy-duty applications.