Description
ABB T3N225
Technical Specifications:
- Product Family: Tmax XT Series.
- Frame Size: T3.
- Rated Current: Up to 250 A.
- Breaking Capacity: High breaking capacity suitable for industrial and commercial applications.
- Poles: Available in 3-pole and 4-pole configurations.
- Trip Unit: Compatible with thermal-magnetic or electronic trip units.
Functional Features:
- Comprehensive Protection: Provides overload, short-circuit, and earth-fault protection.
- Modular Design: Supports accessories such as shunt trips, undervoltage releases, and auxiliary contacts.
- High Reliability: Engineered for long service life and minimal maintenance.
- Selective Coordination: Enables precise coordination with upstream and downstream devices.
Application Scenarios:
- Main and feeder protection in industrial distribution boards.
- Commercial building power distribution.
- Infrastructure and utility applications.
Material Composition & Structural Characteristics:
- Enclosure: High-strength, flame-retardant thermoplastic housing.
- Contacts: Silver-alloy contacts for low resistance and arc resistance.
- Arc Chute: Advanced arc extinction system for safe interruption.
Working Principle:
The T3N225 continuously monitors the current flowing through its poles. When an overload or short-circuit condition is detected, the trip unit activates the mechanical mechanism to rapidly separate the contacts and extinguish the arc, isolating the faulted circuit.
Installation Requirements:
- Mount on standard DIN rail or panel using appropriate mounting hardware.
- Use copper conductors sized according to the rated current and local electrical codes.
- Torque terminal connections to the manufacturer’s specified values.
Usage Precautions:
- Never exceed the rated voltage or breaking capacity.
- Perform regular maintenance and testing to ensure operational readiness.
- Ensure proper coordination with other protective devices in the system.
