ABB TMAX XT2S 160-Ampere Industrial Circuit Breaker (Three-Pole Configuration)

Engineered for mission-critical power distribution networks, the ABB 1SDA067767R1 delivers uncompromising circuit protection in industrial, commercial, and infrastructure applications. This three-pole molded case circuit breaker combines 160-ampere continuous current capacity with exceptional 50kA short-circuit interruption performance at 400V AC, providing the reliability your electrical systems demand.

Designed for integration into motor control centers, main distribution boards, and sub-panel feeders, this MCCB addresses the core challenge facing facility managers and electrical engineers: protecting valuable equipment and personnel from overcurrent faults while maintaining operational continuity. Whether you're specifying components for manufacturing plants, commercial buildings, or renewable energy installations, the TMAX XT2S offers proven performance backed by ABB's century of electrical innovation.

The TMD magnetic-only release mechanism provides instantaneous short-circuit protection, making this breaker ideal for applications where thermal overload protection is handled by external devices—optimizing system design flexibility and cost-efficiency without compromising safety standards.

Core Capabilities & Technical Advantages

→ High Breaking Capacity Protection: 50kA interrupting rating at 400V ensures your distribution system can safely clear severe fault currents, protecting downstream equipment and preventing catastrophic failures in high-power industrial environments.

→ Precision Magnetic Trip Technology: TMD release unit delivers instantaneous magnetic-only protection with factory-calibrated trip characteristics, eliminating adjustment variables while ensuring consistent, reliable short-circuit response across your entire installation.

→ Industrial-Grade Durability: Engineered with reinforced thermoplastic enclosure and silver-alloy contact materials, this breaker maintains performance integrity through 10,000+ mechanical operations in environments ranging from -25°C to +70°C.

✓ Compact Panel Integration: Space-optimized design reduces switchboard footprint by up to 30% compared to legacy breaker technologies, allowing higher circuit density without sacrificing accessibility or thermal management.

✓ Front-Front Terminal Configuration: F-F connection architecture simplifies installation in confined enclosures, reduces wiring time by approximately 25%, and facilitates maintenance access in densely populated panels.

✓ Global Standards Compliance: Full conformity with IEC 60947-2 and EN 60947-2 ensures seamless integration into international projects and multi-regional installations with consistent safety performance.

Industry Applications & Use Cases

Manufacturing & Process Industries: Protects motor feeders, conveyor systems, and automated production lines where external thermal overload relays provide motor-specific protection. The 160A rating suits medium-power three-phase motors (75-90kW range) commonly found in packaging, material handling, and processing equipment.

Commercial Building Infrastructure: Ideal for HVAC distribution, elevator power circuits, and lighting panel feeders in office complexes, hospitals, and educational facilities. The 50kA breaking capacity addresses fault current levels typical in utility-fed commercial services.

Data Center & IT Facilities: Serves as feeder protection in power distribution units (PDUs) and remote power panels, where the magnetic-only characteristic prevents nuisance tripping from inrush currents while maintaining fast fault clearing to protect sensitive electronic loads.

Renewable Energy Systems: Functions as combiner box protection and inverter feeder breakers in solar PV installations, wind farms, and battery energy storage systems where AC distribution requires robust short-circuit protection.

Marine & Offshore Applications: The wide operating temperature range (-25°C to +70°C) and vibration-resistant construction make this breaker suitable for shipboard electrical systems, offshore platforms, and harsh coastal environments.

Technical Parameters & Selection Criteria

Selection Guidelines: Choose this breaker when your application requires 160A continuous current capacity with magnetic-only protection. Verify that available fault current at the installation point does not exceed 50kA at 400V. For applications requiring integrated thermal overload protection, consider the TMA release variant. Ensure adequate panel ventilation to maintain ambient temperature below 40°C for full rated current capacity.

Enhanced Functionality & System Integration

Accessory Compatibility: The TMAX XT2S accepts a comprehensive range of ABB accessories including auxiliary contacts (1NO+1NC configurations), shunt trip releases (24-240V AC/DC), undervoltage releases, and motor operators for remote switching applications.

Communication Integration: When paired with ABB's Ekip Com communication modules, this breaker integrates into building management systems (BMS) and SCADA networks via Modbus RTU, Profibus, or Ethernet protocols—enabling predictive maintenance and real-time monitoring.

Selective Coordination: The TMD trip characteristic facilitates coordination studies with upstream circuit breakers and downstream protective devices, allowing selective fault isolation that minimizes disruption to unaffected circuits during fault conditions.

Delivery Timeline & Service Commitment

Standard Lead Time: In-stock units ship within 2-3 business days via express courier. Typical delivery to major industrial centers: 5-7 business days.

Warranty Coverage: 12-month comprehensive warranty covering manufacturing defects and material failures under normal operating conditions as defined by IEC 60947-2 standards.

Technical Support: Our application engineering team provides pre-sales consultation, coordination study assistance, and post-installation troubleshooting support via phone, email, and remote diagnostics.

Documentation Package: Each unit includes installation manual, dimensional drawings, trip characteristic curves, and IEC test certificates. CAD files and BIM objects available for download.

Frequently Asked Questions

What is the primary difference between TMD and TMA release mechanisms in TMAX XT breakers?
TMD provides magnetic-only instantaneous protection against short circuits, while TMA combines thermal overload protection with magnetic trip functionality. TMD variants are specified when external overload protection (such as motor protection relays) is employed, reducing system cost and complexity.

Can this 3-pole breaker be applied in single-phase or two-phase distribution systems?
While mechanically possible, using a 3-pole unit in single-phase applications is economically inefficient. For single-phase circuits, specify ABB's 1-pole or 2-pole TMAX XT variants optimized for those configurations. All three poles must be used simultaneously in this fixed-pole design.

What is the expected service life under typical industrial operating conditions?
Under normal load conditions (≤80% of rated current) with infrequent fault interruptions, the TMAX XT2S typically provides 15-20 years of reliable service. Mechanical life exceeds 10,000 operations; electrical life depends on fault current magnitude and frequency of interruption.

Is this circuit breaker suitable for DC power distribution applications?
No. The 1SDA067767R1 is designed exclusively for AC applications at 50/60Hz. DC circuit interruption requires specialized arc-quenching chambers and contact materials. Consult ABB's DC-rated MCCB portfolio for direct current applications.

How does the 50kA breaking capacity compare to available fault current in typical installations?
50kA at 400V exceeds fault current levels in most commercial and light industrial installations fed by utility transformers up to 1000kVA. Perform a short-circuit study to verify that prospective fault current at the installation point does not exceed this rating.

What maintenance procedures are recommended for optimal performance?
ABB recommends annual visual inspection, contact resistance measurement every 3-5 years, and functional testing after any fault interruption. The sealed contact chamber requires no lubrication. Replace the breaker if it has interrupted fault currents exceeding 80% of its Icu rating more than three times.

Take the Next Step

Protect your electrical infrastructure with proven ABB technology. Contact our technical sales team for application-specific guidance, coordination study support, or volume pricing for multi-unit projects. Our engineers are ready to help you specify the optimal circuit protection solution for your facility.

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