ABB TMAX XT2S 160 TMA Circuit Breaker (Industrial-Grade Overcurrent Protection)

The ABB 1SDA067556R1 delivers precision three-phase overcurrent protection for demanding industrial environments. This fixed-mount molded case circuit breaker features adjustable thermomagnetic trip technology, enabling customized protection profiles for motors, transformers, and distribution feeders. With 50kA breaking capacity and front-accessible terminals, it streamlines installation while ensuring robust fault clearance in manufacturing plants, commercial facilities, and critical infrastructure.

Designed for electrical contractors and facility engineers who demand reliable protection without compromise, the XT2S 160 TMA combines ABB's century of switchgear expertise with modern safety standards. Whether you're upgrading aging distribution panels or designing new installations, this circuit breaker provides the adjustability and performance required for complex three-phase systems operating up to 690V AC.

Key advantages include field-adjustable thermal trip settings (315A to 630A), compact 160A frame footprint for space-constrained panels, and compatibility with ABB's comprehensive accessory ecosystem for remote monitoring and control integration.

Core Features & Technical Advantages

✓ Adjustable Thermomagnetic Protection
Field-configurable thermal trip from 315A to 630A matches actual load profiles without breaker replacement. Bimetallic element provides inverse-time overload protection while electromagnetic instantaneous trip clears short-circuits in milliseconds. Reduces inventory requirements and enables precise coordination with downstream devices.

✓ High Breaking Capacity (50kA @ 400V)
Clears fault currents up to 50,000 amperes at 400V AC, protecting infrastructure in high-fault-level installations. Meets IEC 60947-2 and UL 489 standards for industrial and commercial applications. Eliminates need for current-limiting fuses in most distribution scenarios.

✓ Front-Accessible Terminal Design
All electrical connections and trip adjustments accessible from panel front. Reduces installation time by 35% compared to rear-terminal alternatives. Enables live maintenance in energized switchboards with proper safety protocols. Accepts 16-95mm² copper conductors with 3.5-4.0 Nm torque specification.

→ Temperature-Compensated Trip Mechanism
Automatic calibration across -25°C to +70°C operating range maintains consistent protection performance. Critical for outdoor enclosures, unheated warehouses, and tropical climates where ambient temperature fluctuations affect conventional thermal elements.

→ Modular Accessory Platform
Compatible with auxiliary contacts, shunt trips, undervoltage releases, and motor operators. Enables remote ON/OFF control, alarm signaling, and integration with building management systems. Single base breaker supports multiple application requirements through accessory selection.

→ Compact 160A Frame Architecture
Optimizes panel space utilization with 208mm height × 130mm width × 145mm depth footprint. Allows higher circuit density in retrofit projects where panel real estate is limited. Weighs only 1.64kg for simplified handling during installation.

Industrial Application Scenarios

Manufacturing Production Lines
Protects motor control centers, conveyor systems, and automated assembly equipment. The adjustable thermal trip prevents nuisance tripping during motor inrush while maintaining overload protection. Selective coordination with downstream motor starters isolates faults without shutting down entire production zones. Typical deployment: 480V three-phase distribution feeding VFDs and soft starters in automotive, food processing, and packaging facilities.

Commercial HVAC Systems
Safeguards rooftop units, chiller compressors, and air handling equipment in office buildings and retail centers. Front-terminal accessibility simplifies maintenance in confined mechanical rooms. The 690V voltage rating accommodates European 400V systems and North American 480V installations. Reduces HVAC downtime through reliable fault detection and clearance.

Data Center Power Distribution
Provides feeder protection for UPS systems, PDUs, and CRAC units where electrical reliability directly impacts IT availability. High breaking capacity ensures fault clearance capability in installations with utility transformers exceeding 1000kVA. Temperature compensation maintains protection accuracy in hot-aisle/cold-aisle environments with variable ambient conditions.

Renewable Energy Installations
Protects inverter outputs and grid connection points in solar PV arrays and wind turbine systems. Wide voltage range (up to 690V) supports medium-voltage distribution architectures. Thermomagnetic technology provides reliable protection without sensitivity to harmonics common in inverter-based systems. Suitable for utility-scale projects requiring IEC 60947-2 compliance.

Marine & Offshore Platforms
Engineered for harsh environments with extended temperature range and robust construction. Protects shipboard electrical distribution, offshore oil/gas platforms, and port infrastructure. Mechanical endurance rated for 25,000 operations withstands vibration and shock loads in mobile installations. Corrosion-resistant materials ensure long-term reliability in salt-spray environments.

Technical Parameters & Selection Guide

Selection Criteria:

Choose thermal trip setting based on continuous load current with 20-25% margin. For motor applications, select setting above motor full-load current but below conductor ampacity. Verify breaking capacity exceeds available fault current at installation point (consult utility or perform short-circuit study). Confirm voltage rating matches or exceeds system nominal voltage. For applications requiring remote control or monitoring, specify compatible accessories during procurement.

Extended Capabilities & Integration

Selective Coordination Engineering: The XT2S 160 TMA supports time-current coordination studies using ABB's DOC software. Engineers can design cascaded protection schemes where upstream breakers delay tripping to allow downstream devices to clear faults first. This minimizes outage scope during fault conditions—critical in hospitals, data centers, and continuous-process manufacturing where power continuity is paramount.

Building Automation Integration: When equipped with auxiliary contacts (ordered separately), the breaker provides volt-free status signals for integration with BMS, SCADA, or PLC systems. Shunt trip accessories enable remote emergency shutdown via fire alarm panels or safety interlock circuits. Undervoltage release options protect motors and transformers from sustained low-voltage conditions.

Sustainability Profile: Manufactured in ABB's UL 2799 Zero Waste to Landfill certified facilities with 55.70% recyclability rate per EN45555 standard. Environmental Product Declarations (EPD) available for LEED and BREEAM green building certification. Silver-alloy contacts minimize contact resistance degradation, extending service life and reducing replacement frequency.

Delivery Timeline & Service Commitment

Standard Lead Time: 5-7 business days for stock items shipped from our regional distribution centers. Expedited 2-3 day delivery available for urgent replacements (additional charges apply).

Custom Configurations: Breakers with factory-installed accessories ship within 10-14 business days. Custom trip settings and special terminal configurations require 3-4 weeks (consult sales team for feasibility).

Warranty Coverage: 24 months from shipment date covering manufacturing defects and workmanship. Extended warranty programs available for critical infrastructure applications with preventive maintenance contracts.

Technical Support: Pre-sales application engineering assistance including protection coordination analysis, accessory selection guidance, and panel layout optimization. Post-installation commissioning support and training available upon request.

Documentation Package: Each shipment includes installation manual, wiring diagrams (IEC and ANSI formats), time-current curves, and accessory compatibility matrix. Environmental Product Declarations and end-of-life disassembly instructions available for download.

Frequently Asked Questions

Q: How do I adjust the thermal trip setting on the XT2S 160 TMA circuit breaker?
A: The thermal trip adjustment dial is accessible from the front panel without tools. Rotate the dial to select 315A, 400A, 500A, or 630A settings. The current setting is indicated by the dial position aligned with the scale marking. After adjustment, verify the setting matches your load requirements and lock the dial to prevent unauthorized changes. Always de-energize the circuit before making adjustments unless qualified for live work.

Q: What is the maximum conductor size this breaker can accommodate?
A: The front terminals accept copper conductors from 16mm² to 95mm² (AWG 6 to AWG 3/0 approximate equivalent). Use a torque screwdriver set to 3.5-4.0 Nm when terminating conductors. For aluminum conductors, consult ABB technical support as derating and anti-oxidant compound may be required. Ensure conductor insulation temperature rating matches or exceeds breaker terminal rating (typically 75°C minimum).

Q: Can this circuit breaker be used for motor protection applications?
A: Yes, the adjustable thermal trip makes it suitable for motor feeder protection when properly coordinated with downstream motor starters. Select a thermal setting 15-25% above motor full-load current to accommodate inrush without nuisance tripping. For motors with long acceleration times or high-inertia loads, verify the trip curve allows sufficient time for motor starting. The breaker does not provide motor overload protection—use in conjunction with thermal overload relays or motor protection relays.

Q: What accessories are available for remote monitoring and control integration?
A: The XT2S platform supports auxiliary contacts (1NO+1NC or 2NO+2NC configurations), shunt trip coils (24-240V AC/DC), undervoltage releases, and motor operators. Auxiliary contacts provide breaker status feedback to BMS or SCADA systems. Shunt trips enable remote emergency shutdown via fire alarm or safety interlock circuits. Motor operators allow remote ON/OFF control. All accessories install without tools using ABB's snap-on mounting system. Consult the accessory compatibility matrix for specific part numbers.

Q: How does the breaking capacity rating affect installation requirements?
A: The 50kA breaking capacity at 400V means the breaker can safely interrupt fault currents up to 50,000 amperes without catastrophic failure. Your installation's available fault current (determined by utility transformer size and impedance) must not exceed this rating. If fault current exceeds 50kA, use current-limiting fuses upstream or select a higher-rated breaker. Breaking capacity decreases at higher voltages—consult ABB's technical data for derating curves if operating above 400V.

Q: What is the difference between fixed and withdrawable mounting configurations?
A: This model features fixed mounting (F F designation) where the breaker is permanently installed via DIN rail or direct panel mounting. Withdrawable versions allow breaker removal without disconnecting conductors—useful for maintenance in critical systems. Fixed mounting is more economical and suitable for most applications where occasional downtime for breaker replacement is acceptable. The "F F" designation indicates both the mounting type (Fixed) and terminal location (Front).

Take the Next Step

Ready to upgrade your electrical protection system? Our engineering team is standing by to assist with breaker selection, coordination studies, and accessory configuration. Contact us today for a detailed quotation, technical specifications, or to discuss your specific application requirements.

Request a Quote: Email your panel schedule and system voltage to our sales team for same-day pricing and availability confirmation.

Technical Consultation: Schedule a call with our application engineers to review protection coordination, accessory selection, or installation planning.

Bulk Procurement: Volume discounts available for projects requiring multiple units. Consult our sales team for contractor pricing and stocking programs.

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