ABB TMAX XT2S 160A MCCB (Industrial-Grade Overcurrent Protection)

The ABB 1SDA067768R1 represents a breakthrough in molded case circuit breaker technology, delivering precision overcurrent protection for mission-critical industrial power systems. Engineered with ABB's TMAX XT2S platform and equipped with an adjustable MA 80 thermal-magnetic trip unit, this 3-pole MCCB provides customizable protection thresholds that adapt to your specific load requirements while maintaining exceptional 50kA breaking performance at 400V AC.

Designed for facilities where electrical reliability directly impacts operational continuity, this circuit breaker combines compact XT2 frame architecture with field-proven protection algorithms. Whether safeguarding motor control centers, distribution panels, or renewable energy installations, the TMAX XT2S 160 delivers the performance consistency and safety margins demanded by modern industrial infrastructure.

With front-accessible terminals, tool-free trip unit servicing, and comprehensive compliance to IEC 60947-2 and UL 489 standards, this MCCB streamlines both installation workflows and long-term maintenance operations—reducing total cost of ownership while maximizing system uptime.

Core Features & Benefits

→ Adjustable Thermal Protection (0.7-1.0 x In)
The MA 80 trip unit enables precise calibration from 112A to 160A, allowing you to fine-tune overload protection to match actual load profiles. This flexibility prevents nuisance tripping while maintaining robust protection against sustained overcurrent conditions—critical for applications with variable load characteristics or motor starting transients.

→ High Breaking Capacity (50kA at 400V)
With an Icu rating of 50kA, this MCCB handles fault currents that would overwhelm standard protection devices. This headroom ensures safe interruption of short-circuit events in high-power industrial environments, protecting downstream equipment and personnel from catastrophic electrical failures.

→ Compact XT2 Frame Design
The space-efficient XT2 architecture reduces panel footprint by up to 30% compared to legacy designs, freeing valuable enclosure real estate for additional circuits or improved cable management. Smaller panels translate to lower material costs and simplified installation in space-constrained environments.

✓ Front-Accessible Terminals
Conductor connections up to 95mm² (AWG 3/0) are accessible from the front face, eliminating the need to remove the breaker for wiring changes. This design accelerates commissioning timelines and simplifies troubleshooting during maintenance windows.

✓ Tool-Free Trip Unit Removal
Field replacement or calibration verification requires no special tools—simply release the locking mechanism and withdraw the trip unit. This serviceability feature minimizes downtime during preventive maintenance or emergency repairs.

✓ Extended Mechanical Life (25,000 Operations)
Robust contact materials and precision mechanism engineering deliver reliable performance across 25,000 mechanical operations, reducing replacement frequency and lifecycle costs in high-cycling applications like motor starters or frequent load switching.

Application Scenarios

Manufacturing & Process Industries
Protect production machinery, conveyor systems, and automated assembly lines where unexpected power interruptions cause costly downtime. The adjustable trip settings accommodate motor inrush currents while preventing thermal damage during jam conditions or mechanical overloads.

Commercial Building Infrastructure
Safeguard HVAC chillers, elevator drives, and lighting distribution in office towers, hospitals, and retail complexes. The 160A rating suits medium-power loads while the 50kA breaking capacity handles fault currents in utility-fed systems with high available short-circuit levels.

Data Center & IT Facilities
Ensure uninterrupted operation of UPS distribution, CRAC units, and server rack PDUs. The MCCB's fast fault clearing and selective coordination capabilities prevent cascading outages that could compromise critical digital infrastructure.

Renewable Energy Systems
Provide DC-to-AC inverter protection in solar farms, wind turbine control panels, and battery energy storage systems. The wide operating temperature range (-25°C to +70°C) and robust construction withstand harsh outdoor environments and temperature cycling.

Marine & Offshore Platforms
Meet the demanding requirements of shipboard electrical systems and offshore oil/gas installations where vibration, humidity, and corrosive atmospheres challenge conventional protection devices. IEC 60947-2 compliance ensures suitability for classification society approvals.

Technical Parameters & Selection Guide

Selection Criteria: Choose this MCCB when your application requires 160A nominal current with adjustable overload protection. Verify that your system's prospective short-circuit current does not exceed 50kA at 400V. For 4-pole neutral protection, consider the XT2S 4-pole variant. For higher current ratings (250A-320A), evaluate the TMAX XT3 or T4 series.

Extended Functions

Accessory Integration: The TMAX XT2S platform supports a comprehensive range of field-installable accessories including auxiliary contacts (1NO+1NC), shunt trip releases (24-240V AC/DC), undervoltage releases, motor operators for remote switching, and mechanical interlocks for transfer switch applications. All accessories install without tools and maintain the breaker's IP rating.

Communication Capabilities: While the base MA 80 trip unit provides thermal-magnetic protection, the XT2S frame accepts electronic trip units with Modbus RTU or Profibus DP communication for integration into SCADA systems, building management platforms, or Industry 4.0 monitoring architectures.

Customization Options: ABB offers factory customization including pre-wired auxiliary contacts, custom terminal lugs, special voltage ratings, and application-specific calibration. Contact our technical team to discuss requirements for OEM integration or large-scale projects requiring tailored specifications.

Delivery & Service Assurance

Lead Time: In-stock units ship within 1-2 business days via express courier. Standard delivery to major industrial centers typically requires 3-5 business days. For bulk orders or custom configurations, lead times range from 2-4 weeks depending on factory production schedules.

Warranty Coverage: Every ABB 1SDA067768R1 MCCB includes a comprehensive 12-month manufacturer warranty covering defects in materials and workmanship. Warranty service includes free replacement of defective units and technical support for installation troubleshooting.

Technical Support: Our application engineering team provides pre-sale consultation for system design, coordination studies, and product selection. Post-sale support includes installation guidance, commissioning assistance, and troubleshooting for the life of the product.

Documentation Package: Each unit ships with installation instructions, dimensional drawings, wiring diagrams, and certification documents (CE, UL, IEC test reports). Digital copies of technical manuals and CAD models are available for download from our support portal.

Frequently Asked Questions

How do I adjust the thermal trip setting on the MA 80 unit?
The thermal adjustment dial is located on the front face of the trip unit. Rotate the dial to select your desired setting between 0.7x and 1.0x the rated current (112A-160A). The setting is indicated by alignment marks on the dial. Always adjust with the breaker de-energized and verify the setting matches your load requirements.

Can this MCCB protect three-phase motors with high starting currents?
Yes, the adjustable thermal protection is specifically designed for motor applications. Set the thermal dial to 1.0x In (160A) to accommodate starting transients, then rely on the magnetic trip for short-circuit protection. For motors with exceptionally long acceleration times, consider adding a motor protection relay for enhanced thermal modeling.

What accessories are compatible with the 1SDA067768R1 model?
All TMAX XT2 accessories are compatible, including auxiliary contacts (1SDA054837R1), shunt trip releases (1SDA054838R1), undervoltage releases (1SDA054839R1), rotary handles, and padlocking devices. Accessories install via snap-on mounting without requiring breaker disassembly.

Is this breaker suitable for DC applications?
The 1SDA067768R1 is rated for AC applications only. For DC circuit protection (solar, battery systems, traction), specify ABB's DC-rated MCCB models which feature enhanced arc extinction chambers and DC-specific trip calibration.

How do I verify the breaking capacity is adequate for my installation?
Calculate the prospective short-circuit current at the point of installation using utility fault data and impedance calculations. Ensure this value does not exceed 50kA at 400V. For installations near large transformers or utility substations, consult with a licensed electrical engineer to verify fault levels.

What is the difference between Icu and Ics ratings?
Icu (ultimate breaking capacity) is the maximum fault current the breaker can safely interrupt, though it may require replacement afterward. Ics (service breaking capacity) is typically 50-75% of Icu and represents the fault level the breaker can interrupt and remain in service. For the XT2S 160, Ics is typically 37.5kA (75% of 50kA Icu).

Ready to Secure Your Electrical Infrastructure?

The ABB TMAX XT2S 160A MCCB delivers the protection reliability and operational flexibility your critical systems demand. With adjustable trip settings, exceptional breaking performance, and field-proven durability, this circuit breaker represents a smart investment in electrical safety and system uptime.

Order now to receive factory-sealed, certified product with full technical documentation and warranty support. Our team is standing by to assist with product selection, coordination studies, and volume pricing for multi-unit projects.

Contact our specialists: For application-specific questions or custom configuration requirements, reach out via email or phone. We provide same-day technical responses and can arrange video consultations for complex system design challenges.

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