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XT4S 250 TMA200/2000 FF 3P

ABB XT4S 250 TMA 200‑2000 3P FFThis is a low‑voltage molded case circuit breaker (MCCB) designed for protection of electrical distribution, motors, and equipment against overloads and short circuits. The adjustable thermomagnetic trip unit (TMA) allows current settings in a specified range, making it suitable for selective protection in industrial, commercial, and infrastructure applications.

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Technical Parameters Parameter Specification Rated Current (In) 200 A (trip unit setting max) Frame Size 250 A Number of Poles 3P Trip Unit Type Thermomagnetic Adjustable (TMA) Current Setting Range ~140 – 200 A (adjustable) Rated Operational Voltage 690 V AC / 500 V DC Rated Insulation Voltage (Ui) 1000 V Rated Impulse Withstand Voltage (Uimp) 8 kV Rated Uninterrupted Current (Iu) 250 A Rated Ultimate Short‑Circuit Breaking Capacity (Icu) ~50 kA at 380–400 V AC Rated Service Short‑Circuit Breaking Capacity (Ics) ~50 kA at 380–400 V AC Electrical Durability ~8,000 operations Mechanical Durability ~25,000 operations Terminal Connection Front terminals (bolted) Standards Compliance IEC 60947‑2