ABB Tmax XT3N 250 Circuit Breaker | 1SDA068059R1

ABB Tmax XT3N 250 Circuit Breaker – Industrial Power Protection Excellence

The ABB Tmax XT3N 250 (1SDA068059R1) represents cutting-edge molded case circuit breaker (MCCB) technology designed for demanding industrial and commercial electrical distribution systems. Engineered with ABB's renowned Tmax platform, this 250-ampere circuit breaker delivers exceptional overcurrent protection, thermal-magnetic trip characteristics, and long-term reliability for critical power infrastructure.

Core Technical Specifications

• Model Number: 1SDA068059R1
• Series: Tmax XT3N 250 with TMD 250 trip unit
• Rated Current (In): 250A continuous at 40°C ambient
• Pole Configuration: 3-pole (3P) for three-phase systems
• Rated Voltage (Ue): Up to 690V AC (50/60Hz)
• Breaking Capacity (Icu): 36-50kA at 400V (depending on configuration)
• Trip Unit: TMD 250 thermal-magnetic protection
• Mounting: Fixed front-mounted installation
• Standards Compliance: IEC 60947-2, UL 489, CSA C22.2
• Operating Temperature: -25°C to +70°C
• Mechanical Life: 25,000 operations minimum
• Electrical Life: 8,000 operations at rated current

Industrial Applications & Use Cases

Power Distribution Centers: Main and sub-distribution boards in manufacturing facilities, data centers, and commercial buildings requiring robust 250A protection with selective coordination capabilities.

Motor Control Applications: Protection for large three-phase motors, pump stations, HVAC systems, and industrial machinery where precise overload and short-circuit protection is critical.

Renewable Energy Systems: Solar inverter protection, wind turbine electrical systems, and battery energy storage installations demanding high breaking capacity and environmental resilience.

Infrastructure Projects: Hospitals, airports, water treatment facilities, and mission-critical installations where electrical continuity and safety are paramount.

Marine & Offshore: Shipboard electrical systems and offshore platforms benefiting from compact design and vibration-resistant construction.

Engineering Solutions & Performance Benefits

Advanced Trip Technology: The integrated TMD 250 thermal-magnetic trip unit provides precise overload protection with adjustable thermal settings and instantaneous magnetic protection against short circuits, ensuring optimal coordination with upstream and downstream devices.

Compact Footprint Design: Tmax XT series offers up to 30% space savings compared to conventional MCCBs, allowing higher power density in switchboards and reducing panel manufacturing costs.

Enhanced Safety Features: Double insulation construction, arc-resistant design, and finger-safe terminals protect personnel during installation and maintenance operations.

Operational Flexibility: Front-accessible terminals and trip unit settings enable quick commissioning and adjustment without removing the breaker from the panel, minimizing downtime.

Energy Efficiency: Low power dissipation design reduces heat generation in electrical cabinets, improving overall system efficiency and extending component lifespan.

Installation & Integration Advantages

The XT3N 250 features ABB's universal mounting system compatible with standard DIN rails and panel mounting configurations. Quick-connect busbar systems and modular accessories streamline installation in both new construction and retrofit applications. The breaker's mechanical and electrical interlock compatibility ensures safe integration with transfer switches and generator systems.

Related Circuit Protection Products

Frequently Asked Questions

Q: What is the difference between XT3N and XT2 series breakers?
A: The XT3N series offers higher breaking capacity (up to 50kA vs 36kA), enhanced arc extinction technology, and improved thermal management. XT3N is recommended for applications with higher fault current levels or where future system expansion is anticipated.

Q: Can I adjust the trip settings on the TMD 250 unit?
A: The TMD 250 features fixed thermal-magnetic characteristics optimized for 250A operation. For adjustable protection settings, consider upgrading to the electronic PR221DS-LS/I trip unit which offers programmable overload and short-circuit protection.

Q: Is this breaker suitable for DC applications?
A: The 1SDA068059R1 is designed for AC systems. For DC circuit protection (solar, battery systems), ABB offers specialized DC-rated Tmax XT models with appropriate voltage and breaking capacity ratings.

Q: What accessories are available for the XT3N 250?
A: Compatible accessories include auxiliary contacts, shunt trip releases, undervoltage releases, motor operators, rotary handles, and communication modules for remote monitoring and control integration.

Q: How do I verify the breaker is genuine ABB?
A: Authentic ABB Tmax breakers feature laser-etched serial numbers, holographic labels, and QR codes for verification through ABB's product authentication system. We supply only genuine factory-sealed units with full traceability.

Quality Assurance & Warranty

Every ABB Tmax XT3N 250 circuit breaker undergoes rigorous factory testing including dielectric strength verification, trip characteristic validation, and mechanical endurance testing. Our units are supplied in original ABB packaging with complete documentation including test certificates and installation instructions.

Comprehensive 12-Month Warranty: We stand behind product quality with a full one-year warranty covering manufacturing defects, material failures, and performance issues. Technical support is available throughout the product lifecycle for installation guidance, troubleshooting, and application engineering.

Why Choose Industrial Control Hub?

• ✓ Authorized ABB distributor with genuine factory products
• ✓ Competitive pricing with volume discounts available
• ✓ Global shipping with secure industrial packaging
• ✓ Technical application support from certified engineers
• ✓ Fast order processing and same-day dispatch options
• ✓ Complete documentation and compliance certificates

Protect your critical electrical infrastructure with the proven reliability of ABB Tmax XT3N 250 circuit breakers. Engineered for performance, built for longevity, trusted worldwide.

© 2025 INDUSTRIAL CONTROL HUB. All rights reserved.
Original Source: https://www.indctrlhub.com
Contact: sales@indctrlhub.com | +0086 18359243191