ABB XT4H250 TMA250-2500 FF 3P Molded Case Circuit Breaker (1SDA068345R1)

Core Advantages

• Adjustable Thermal-Magnetic Protection: The TMA trip unit provides dual protection with adjustable settings. The thermal (overload) protection is adjustable from 175 A to 250 A, while the magnetic (short-circuit) protection is adjustable from 1250 A to 2500 A. This flexibility allows precise coordination with downstream protective devices for optimal selectivity.

• High Breaking Capacity: With a rated ultimate short-circuit breaking capacity (Icu) of 70 kA at 400 V AC, the XT4H250 delivers exceptional fault current protection. The rated service short-circuit breaking capacity (Ics) reaches 100 kA at 220-240 V AC, ensuring reliable operation even under severe fault conditions.

• Compact High-Performance Design: The SACE Tmax XT series is designed to provide high breaking capacity in a compact footprint, saving valuable panel space. The XT4 frame offers a 250 A rating while maintaining dimensions suitable for dense switchgear configurations.

• Flexible Installation Options: The breaker supports both fixed and plug-in installation configurations. Motor drive operation is available as an optional accessory, enabling remote switching capability for automated power management systems.

• Complete System Compatibility: The XT4H250 is compatible with a comprehensive range of ABB accessories including auxiliary contacts, shunt trips, undervoltage releases, and communication modules. This modular approach enables customized configurations for specific application requirements.

• Standards Compliance: The breaker complies with IEC 60947-2 standards and carries CE certification. The rated insulation voltage (Ui) of 1000 V and rated impulse withstand voltage (Uimp) of 8 kV ensure reliable performance in demanding electrical environments.

Technical Parameters

Application Scenarios

The ABB XT4H250 TMA250-2500 FF 3P is essential in various industrial and commercial power distribution systems requiring reliable circuit protection:

• Industrial Power Distribution: Serves as main and sub-distribution breakers in manufacturing plant electrical panels, protecting feeder circuits and downstream equipment from overload and short-circuit conditions.

• Motor Control Centers: Provides reliable protection for three-phase motor circuits up to 690 V AC. The adjustable trip settings allow precise coordination with motor protection requirements.

• Infrastructure Projects: Used in commercial buildings, data centers, and institutional facilities for main incoming and distribution circuit protection.

• Process Industry Facilities: Protects critical electrical circuits in chemical plants, refineries, and food processing facilities where reliable power distribution is essential.

• Generator Protection: Serves as protection for generator output circuits, ensuring safe operation during startup, synchronization, and load changes.

• Feeder Circuit Protection: Provides reliable protection for feeder cables and busways in large electrical installations, with high breaking capacity to handle fault currents safely.

What Is Included

• 1 × ABB XT4H250 TMA250-2500 FF 3P Molded Case Circuit Breaker (1SDA068345R1)

• Original Factory Packaging (New & Original)

Before You Buy

• Stock Status: In Stock – Ready for immediate dispatch.

• Condition: New and Original. Each unit is 100% tested and verified before shipping.

• Accessories Note: Auxiliary contacts, shunt trips, undervoltage releases, and motor operators are available separately. Please specify your requirements when ordering if additional accessories are needed.

• Installation: Installation must be performed by qualified technicians. Ensure all power sources are disconnected before installation. Follow local electrical codes and regulations for circuit breaker installation.

• Warranty: Comes with a standard 12-month warranty covering defects in materials and workmanship.

Frequently Asked Questions

Q: What does the model number XT4H250 TMA250-2500 FF 3P represent?
A: The model number breaks down as follows: XT4H = Tmax XT4 frame size, High breaking capacity version; 250 = 250 A rated current; TMA = Thermal-Magnetic Adjustable trip unit; 250-2500 = Trip unit setting range (250 A thermal, 2500 A magnetic); FF = Fixed version with Front terminals; 3P = Three-pole configuration.

Q: What is the difference between the thermal and magnetic protection settings?
A: The thermal (overload) protection is adjustable from 175 A to 250 A and responds to sustained overcurrent conditions. The magnetic (short-circuit) protection is adjustable from 1250 A to 2500 A and responds instantaneously to high fault currents. Both settings are adjustable to coordinate with downstream protective devices.

Q: What is the breaking capacity of this circuit breaker?
A: The XT4H250 has a rated ultimate short-circuit breaking capacity (Icu) of 70 kA at 400 V AC. The rated service short-circuit breaking capacity (Ics) reaches 100 kA at 220-240 V AC, providing exceptional protection against fault currents.

Q: Can this breaker be motorized for remote operation?
A: Yes, motor drive operation is available as an optional accessory. This enables remote opening and closing of the circuit breaker for automated power management and SCADA integration.

Q: What accessories are available for this circuit breaker?
A: The XT4H250 is compatible with a comprehensive range of accessories including auxiliary contacts (NO/NC), shunt trips, undervoltage releases, rotary handles, motor operators, and communication modules for advanced monitoring.

Q: What is the rated voltage and insulation level?
A: The breaker has a rated operational voltage (Ur) of 690 V AC and a rated insulation voltage (Ui) of 1000 V. The rated impulse withstand voltage (Uimp) is 8 kV.

Q: What is the difference between the FF and other terminal configurations?
A: "FF" indicates the breaker comes with Front terminals on both the line and load sides, designed for front-side bolt connection. Other configurations may include rear terminals or plug-in connections depending on the specific model variant.

Q: How fast can you ship this module?
A: As this is a stock item, we typically ship within 24 hours of order confirmation via global express services like DHL or FedEx.

Recommending Models

The ABB XT4H250 TMA250-2500 FF 3P works seamlessly with the following ABB components and accessories:

• 1SDA068346R1: XT4H250 TMA250-2500 FF 4P version with four-pole configuration for applications requiring neutral protection.

• 1SDA054279R1: T4H250 TMA125-1250 4P version with lower trip setting range for applications requiring more sensitive protection.

• Ekip Com Modbus TCP (1SDA074151R1): Communication module for integrating the circuit breaker into Modbus TCP networks for remote monitoring and control.

• Ekip Supply (1SDA074172R1): Auxiliary power supply module required when installing communication modules on the circuit breaker.

• Auxiliary Contact Modules: Available in various configurations (1NO+1NC, 2NO+2NC) for status indication and interlocking circuits.

• Motor Operator: Optional motor drive for remote opening and closing operations, enabling automated power management.

• Rotary Handle: Alternative to the standard toggle for door-mounted operation, available in various handle lengths.