ABB XT2H 160 Breaking Part 1SDA068165R1 | 3-Pole TMax XT MCCB

ABB XT2H 160 Breaking Part – High-Performance 3-Pole Molded Case Circuit Breaker

The ABB XT2H 160 Breaking Part (1SDA068165R1) represents the core switching mechanism within the TMax XT family of molded case circuit breakers. Engineered for demanding industrial and commercial electrical distribution systems, this 3-pole breaking unit delivers reliable overcurrent and short-circuit protection for 690V AC and 500V DC applications up to 160 amperes.

Technical Specifications

• Model Number: 1SDA068165R1
• Product Series: TMax XT2H
• Rated Current (Iu): 160 A at 40°C
• Pole Configuration: 3-pole (3P)
• Rated Voltage (Ue): 690V AC / 500V DC
• Breaking Capacity (Icu): Up to 50 kA at 400V AC (depends on trip unit)
• Trip Unit Compatibility: Fixed (F) thermal-magnetic or electronic trip units
• Frame Size: XT2 (160A frame)
• Mounting: Fixed front-mounted installation
• Operating Mechanism: Toggle handle with manual or motor operator options
• Electrical Life: 25,000 operations at rated current
• Mechanical Life: 50,000 operations
• Operating Temperature: -25°C to +70°C
• Standards Compliance: IEC 60947-2, UL 489, CSA C22.2 No. 5
• Origin: Manufactured in Italy
• Weight: 0.92 kg

Industrial Application Scenarios

The XT2H 160 breaking part is deployed across diverse electrical distribution environments where reliable circuit protection is mission-critical:

• Manufacturing Facilities: Main and feeder protection for motor control centers, CNC machines, and automated production lines requiring selective coordination with downstream devices
• Commercial Buildings: Distribution panel protection for HVAC systems, lighting circuits, and elevator drives in office towers and shopping centers
• Data Centers: UPS output distribution and PDU protection ensuring continuous uptime for critical IT infrastructure with precise current limiting
• Renewable Energy Systems: DC circuit protection for solar inverters and battery storage systems up to 500V DC with bi-directional current handling
• Marine & Offshore: Shipboard electrical distribution and offshore platform power systems meeting DNV-GL and ABS marine certifications

System Integration & Configuration

The XT2H 160 breaking part integrates seamlessly into TMax XT modular architecture, accepting a range of interchangeable trip units from basic thermal-magnetic (TMA) to advanced electronic (TMD, Ekip) versions. This modularity allows field upgrades from fixed protection curves to programmable settings with communication capabilities without replacing the entire breaker assembly.

For selective coordination, the XT2H 160 works in tandem with upstream TMax T4, T5, or Emax 2 breakers and downstream XT1 or miniature circuit breakers, ensuring only the faulted circuit opens during overload or short-circuit events. The breaking part supports optional accessories including auxiliary contacts, shunt trips, undervoltage releases, and motor operators for remote control integration with building management systems or industrial SCADA networks.

Installation & Maintenance

Installation follows standard DIN rail or panel-mounted configurations with front-accessible terminals supporting copper or aluminum conductors from 16mm² to 95mm². The breaking mechanism features a visible contact position indicator and a trip-free design that prevents manual override during fault conditions. Maintenance intervals are extended through silver-alloy contacts and arc chutes designed for 25,000 electrical operations at rated current without contact replacement.

Common Technical Questions

Q: What is the difference between XT2H and XT2S breaking parts?
A: The XT2H (H = High performance) offers higher breaking capacity (up to 50kA) compared to XT2S (S = Standard, up to 36kA). Both share the same 160A frame but differ in arc chute design and contact materials.

Q: Can I retrofit an electronic trip unit onto this breaking part?
A: Yes, the XT2H 160 accepts all TMax XT trip units including TMD (electronic with LCD), Ekip (programmable with communication), and basic TMA (thermal-magnetic) versions through a plug-in interface.

Q: Is this breaking part suitable for DC solar applications?
A: Yes, the XT2H 160 is rated for 500V DC operation, making it suitable for solar inverter protection. However, verify the DC breaking capacity derating curve in the technical catalog for your specific voltage.

Q: What accessories are compatible with this model?
A: Compatible accessories include auxiliary contacts (1NO+1NC), shunt trip coils (24-240V AC/DC), undervoltage releases, motor operators, and padlocking devices. All accessories mount directly to the breaking part.

Q: How do I identify the trip unit type installed?
A: The trip unit type is marked on the front label. TMA units have dial settings, TMD units feature an LCD display, and Ekip units include digital interfaces with communication ports.

Warranty & Technical Support

All units are backed by a 12-month manufacturer warranty covering defects in materials and workmanship. Our technical team provides application engineering support, selective coordination studies, arc flash analysis assistance, and installation guidance to ensure compliant, safe electrical distribution system design.

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