
Product Description
ABB TMAX XT2S 160 TMA Circuit Breaker - Precision Overcurrent Protection
The ABB 1SDA067556R1 represents the pinnacle of molded case circuit breaker technology within the TMAX XT2S series. Engineered for three-phase electrical distribution systems, this fixed-mount circuit breaker combines thermomagnetic protection with adjustable trip characteristics, delivering reliable overcurrent and short-circuit protection for industrial, commercial, and infrastructure applications.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ABB |
| Part Number | 1SDA067556R1 |
| Series | TMAX XT2S 160 |
| Product Type | Molded Case Circuit Breaker (MCCB) |
| Poles | 3-pole (3p) |
| Mounting Type | Fixed (F F) with front terminals |
| Release Type | Thermomagnetic TMA R 63 |
| Rated Current (In) | 63A - 630A (adjustable) |
| Thermal Adjustment Range | I3 = 315A to 630A |
| Frame Size | 160A |
| Rated Voltage (Ue) | 690V AC (50/60Hz) |
| Breaking Capacity (Icu) | Up to 50kA @ 400V |
| Terminal Configuration | Front-accessible screw terminals |
| Operating Temperature | -25°C to +70°C |
| Dimensions (H×W×D) | 208mm × 130mm × 145mm |
| Weight | 1.64 kg |
| Compliance Standards | IEC 60947-2, UL 489, EN 60947-2 |
| EAN Code | 8015644014520 |
Advanced Protection Characteristics
Thermomagnetic Release Technology (TMA R 63):
- Thermal Protection: Bimetallic element provides inverse-time overload protection with adjustable trip threshold (I3) from 315A to 630A, safeguarding conductors and connected equipment from sustained overcurrent conditions.
- Magnetic Protection: Electromagnetic instantaneous trip mechanism responds to short-circuit faults within milliseconds, preventing catastrophic damage to electrical infrastructure.
- Trip Curve Optimization: Factory-calibrated trip characteristics ensure selective coordination with upstream and downstream protective devices in complex distribution networks.
- Temperature Compensation: Automatic adjustment for ambient temperature variations maintains consistent protection performance across -25°C to +70°C operating range.
Industrial Application Scenarios
1. Manufacturing Facility Power Distribution:
Deployed as main or feeder circuit protection in industrial plants, the XT2S 160 TMA safeguards motor control centers, variable frequency drives, and production line equipment. The adjustable thermal trip allows precise matching to actual load profiles, preventing nuisance tripping while maintaining robust fault protection.
2. Commercial Building Electrical Systems:
Ideal for protecting HVAC systems, elevator drives, and lighting distribution panels in office buildings, shopping centers, and hospitality facilities. The compact 160A frame size optimizes panel space utilization while the front-accessible terminals simplify installation and maintenance in confined electrical rooms.
3. Data Center Critical Infrastructure:
Provides reliable protection for UPS systems, PDUs, and IT equipment power feeds. The high breaking capacity (up to 50kA) ensures fault clearance capability in high-availability environments where electrical system integrity is paramount.
4. Renewable Energy Integration:
Protects inverter outputs and grid connection points in solar PV and wind power installations. The wide voltage rating (up to 690V AC) accommodates medium-voltage distribution architectures common in utility-scale renewable projects.
5. Marine and Offshore Platforms:
Engineered for harsh environments with extended temperature range and robust construction. Suitable for shipboard electrical distribution, offshore oil/gas platforms, and port infrastructure where reliability under extreme conditions is critical.
Engineering Solutions & Value Proposition
Selective Coordination Capability:
The XT2S series supports time-current coordination studies, enabling engineers to design cascaded protection schemes that isolate faults at the lowest distribution level. This minimizes downtime and maintains power continuity to unaffected circuits during fault conditions.
Modular Accessory Integration:
Compatible with ABB's comprehensive range of accessories including auxiliary contacts, shunt trips, undervoltage releases, and motor operators. This modularity enables customized protection solutions tailored to specific application requirements without requiring different base breaker models.
Front-Terminal Accessibility:
The F F (fixed, front terminals) configuration allows all electrical connections and adjustments to be performed from the front of the panel. This design reduces installation time by 30-40% compared to rear-connected alternatives and facilitates live maintenance in energized switchboards.
Sustainability & Environmental Compliance:
ABB EcoSolutions certified product with 55.70% recyclability rate per EN45555 standard. Manufactured in UL 2799 Zero Waste to Landfill validated facilities. Environmental Product Declarations (EPD) available for lifecycle carbon footprint assessment in green building projects (LEED, BREEAM).
Long-Term Reliability:
Mechanical endurance rated for 25,000 operations under normal conditions. Electrical endurance exceeds 10,000 operations at rated current. Silver-alloy contacts minimize contact resistance degradation, ensuring stable performance over decades of service.
Installation & Commissioning Guidelines
Mounting Requirements:
- Fixed mounting on DIN rail or direct panel mounting using supplied hardware
- Minimum clearance: 50mm top/bottom, 25mm sides for adequate ventilation
- Torque specifications: Terminal screws 3.5-4.0 Nm (copper conductors 16-95mm²)
Trip Threshold Adjustment:
- Thermal trip adjustment dial accessible from front panel (no tools required)
- Adjustment range: 315A, 400A, 500A, 630A (discrete settings)
- Verify setting matches downstream conductor ampacity and load characteristics
- Lock adjustment dial after commissioning to prevent unauthorized changes
Testing & Verification:
- Perform insulation resistance test (500V DC megger): >10MΩ between poles and to ground
- Verify mechanical operation: manual ON/OFF cycling (5 cycles minimum)
- Primary injection testing recommended for critical applications (consult ABB test procedures)
- Document trip settings and test results in facility maintenance records
Technical Support & Documentation
Comprehensive technical resources available including:
- Installation and wiring diagrams (IEC and ANSI standards)
- Coordination tables and time-current curves for protection studies
- Environmental Product Declarations (EPD) for Italy and China manufacturing sites
- End-of-life disassembly instructions for sustainable decommissioning
- Accessory compatibility matrix and configuration guides
Our engineering team provides pre-sales application support, protection coordination analysis, and post-installation commissioning assistance to ensure optimal system performance.
Quality Assurance & Warranty
Every ABB TMAX XT2S circuit breaker undergoes rigorous factory testing including:
- 100% functional testing of trip mechanisms and contact integrity
- High-potential (hipot) dielectric strength verification
- Calibration verification of thermal and magnetic trip thresholds
- Mechanical endurance sampling per IEC 60947-2 requirements
Standard warranty coverage includes 24 months from date of shipment. Extended warranty programs and preventive maintenance contracts available for critical infrastructure applications.