ABB Tmax T4N 250 PR221DS-LS 1SDA053999R1

Description

Technical Specifications

Core Electrical Parameters

• Rated Current (In): 250 A
• Number of Poles: 3P (Three-Pole)
• Rated Voltage: Up to 690 V AC; 600 V DC
• Frequency: 50/60 Hz
• Breaking Capacity (Icu):
  • 36 kA at 415 V AC
  • 30 kA at 440 V AC
  • 17 kA at 500 V AC
  • 9.2 kA at 690 V AC
• Service Breaking Capacity (Ics): 100% of Icu
• Trip Unit: PR221DS-LS/I electronic trip unit with LS/I protection (Long-time, Short-time, Instantaneous)
• Long-Time Protection (L): Adjustable overload protection with thermal memory
• Short-Time Protection (S): Selective short-circuit protection with adjustable delay
• Instantaneous Protection (I): Fast-acting short-circuit protection
• Insulation Voltage (Ui): 1000 V
• Impulse Withstand Voltage (Uimp): 12 kV
• Utilization Category: A (IEC 60947-2)eero

Physical & Environmental

• Dimensions: 105 mm (W) × 205 mm (H) × 103.5 mm (D)
• Weight: 3.5 kg
• Mounting: Fixed front terminal mounting
• Operating Temperature: -25 °C to +70 °C
• Storage Temperature: -40 °C to +85 °C
• Protection Degree: IP20 (front)
• Standards Compliance: IEC 60947-2, UL 489, CSA C22.2
• Mechanical Life: 25,000 operations
• Electrical Life: 10,000 operations at rated current

Terminals & Connections

• Terminal Type: Front-connected screw terminals
• Conductor Size: Suitable for copper and aluminum conductors up to 185 mm²
• Connection: Standard industrial terminal configuration for easy wiring

Key Features

Advanced Electronic Protection

• PR221DS-LS/I Trip Unit: Provides comprehensive long-time overload, short-time selective, and instantaneous short-circuit protection for precise fault management.
• Selective Coordination: Short-time delay function enables proper system coordination, isolating faults without unnecessary upstream tripping.
• Adjustable Parameters: All protection thresholds are field-adjustable to match specific load and system requirements.
• Thermal Memory: Maintains thermal overload memory to protect motors and cables from cumulative overheating.

High Breaking Performance

• High Short-Circuit Capacity: Delivers up to 36 kA breaking capacity at 415 V AC, safely interrupting severe short-circuit faults.
• Fast Fault Clearing: Rapid response time minimizes arc energy and equipment damage during fault conditions.
• Consistent Performance: Maintains stable breaking characteristics across wide voltage and temperature ranges.

Robust Construction & Reliability

• Industrial-Grade Design: Built with high-strength molded case material to withstand mechanical stress and harsh industrial environmentsABB.
• Long Service Life: High mechanical and electrical endurance ratings ensure reliable long-term operation.
• Superior Insulation: High impulse withstand voltage provides excellent protection against voltage surges and electrical noise.

Flexible Installation & Integration

• Compact Form Factor: Space-saving design optimizes panel space utilization in switchgear assembliesABB.
• Standardized Terminals: Front-facing terminals simplify installation and maintenance.
• Accessory Compatibility: Supports a wide range of accessories including shunt trips, undervoltage releases, and auxiliary contacts for expanded functionality.

Application Scenarios

Industrial Manufacturing

• Motor Control Centers (MCCs): Primary protection for motor feeders and branch circuits in manufacturing facilities.
• Machine Tools: Protects CNC machines, presses, and heavy industrial equipment from electrical faults.
• Conveyor Systems: Safeguards conveyor motors and drives in material handling applications.
• Process Equipment: Ensures reliable protection for pumps, fans, compressors, and mixers in production lines.

Commercial & Infrastructure

• Building Electrical Systems: Main and sub-distribution protection in commercial buildings, hospitals, and data centers.
• HVAC Systems: Protects large air handling units, chillers, and ventilation equipment.
• Water & Wastewater: Safeguards pumps, valves, and control systems in water treatment plants.
• Retail & Hospitality: Distribution circuit protection in shopping malls, hotels, and entertainment venues.

Power Distribution

• Main Distribution Boards: Acts as a main circuit breaker in low-voltage distribution panels.
• Sub-Distribution Panels: Provides selective protection for downstream branch circuits.
• Generator Sets: Protects generator output circuits and ensures safe paralleling operations.
• Renewable Energy Systems: Safeguards inverters and transformers in solar and wind power installations.

Oil & Gas, Mining & Heavy Industry

• Extraction Facilities: Protects electrical equipment in harsh mining and oilfield environments.
• Refineries & Processing Plants: Ensures reliable protection in hazardous and demanding industrial settings.
• Material Processing: Safeguards crushers, mills, and processing equipment in heavy industry applications.