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XT3N250 TMD200/2000 FF 3P

The ABB XT3N250 TMD200/2000 FF 3P is a three‑pole molded case circuit breaker (MCCB) from ABB’s Tmax XT series, designed for industrial and commercial power distribution protection. It uses a thermal‑magnetic (TMD) trip unit to provide combined overload and short‑circuit protection. The breaker is intended for fixed mounting with front terminals and is suitable for protecting three‑phase AC or DC electrical systems. The adjustable overload range and fixed instantaneous short‑circuit setting allow coordinated protection in electrical distribution and motor feeder applications.

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Key Technical Parameters General & Protection Product / Model: ABB XT3N250 TMD200/2000 FF 3P Device Type: Molded Case Circuit Breaker (MCCB) Series: Tmax XT Number of Poles: 3 Trip Unit Type: Thermal‑Magnetic (TMD) Mounting Style: Fixed with front terminals Current & Voltage Ratings Rated Continuous Current (In): 200 A Overload Trip Setting Range: ~140–200 A Instantaneous Short‑Circuit Setting: 2000 A Rated Operational Voltage: Up to 690 V AC or 500 V DC Rated Frequency: 50 Hz / 60 Hz Rated Insulation Voltage (Ui): ~800 V Rated Impulse Withstand Voltage (Uimp): ~8 kV Short‑Circuit & Breaking Capacity Ultimate Breaking Capacity (Icu): ~50 kA at 220–240 V AC ~36 kA at 380–415 V AC ~20 kA at 500 V AC ~5 kA at 690 V AC DC Breaking Capacity: ~36 kA at 250 V DC (2 poles in series) ~50 kA at 500 V DC (3 poles in series) Performance & Durability Electrical Durability: ~120 cycles/hour (up to ~8000 operations) Mechanical Durability: ~240 cycles/hour (up to ~25,000 operations) Power Loss: ~13 W per pole at rated conditions Terminal Type: Front, bolt connection (tightening torque ~8 N·m) Physical Dimensions (approx): ~150 mm (H) × 105 mm (W) × 70 mm (D) Weight: ~1.7 kg Degree of Protection: Standard industrial housing suitable for enclosure mounting Applications Main & feeder protection in distribution boards Motor feeder circuits protection Industrial and commercial electrical systems requiring robust overload and short‑circuit protection