Overview

The ABB T3N225 is a high-performance molded case circuit breaker (MCCB) designed for industrial and commercial electrical protection applications. Manufactured by ABB, the T3N225 provides reliable overcurrent, short-circuit, and overload protection for electrical circuits up to 225 A.

This MCCB combines precise protection with a compact design, ensuring safety and operational continuity in industrial distribution systems, motor control centers, and critical power installations.

Key Features

Rated current: up to 225 A

Short-circuit interrupting capacity suitable for industrial networks

Adjustable thermal-magnetic protection settings

Compact and modular design for easy integration

High dielectric strength and insulation reliability

Clear trip indication for maintenance and diagnostics

Conforms to IEC/EN 60947-2 standards

Technical Specifications

Structure and Design

The ABB T3N225 MCCB features a robust housing and internal components designed for durability and reliable operation:

High-quality thermoplastic case for mechanical and electrical insulation

Thermal-magnetic trip unit for overcurrent and short-circuit protection

Copper or silver alloy contacts for low resistance and long life

Trip indicator for easy fault identification

Modular terminal design for secure wiring connections

The compact construction allows efficient installation in industrial panels and motor control centers.

Applications

The T3N225 is ideal for protection and control in industrial and commercial environments:

Electrical distribution panels

Motor control centers (MCC)

Industrial machinery protection

Power distribution in commercial buildings

Critical load protection in factories and plants

It ensures safe operation by preventing damage due to overloads, short circuits, or electrical faults.

Installation and Maintenance

Installation Guidelines

Mount securely in the designated electrical panel or DIN rail

Connect conductors to the labeled terminals with proper torque

Verify the rated current and voltage settings before energizing

Ensure proper grounding and insulation for safety

Maintenance Recommendations

Inspect for signs of overheating or wear periodically

Test the trip function according to ABB guidelines

Keep the breaker and panel clean and free of dust or moisture

Replace the unit if contacts or trip mechanisms show signs of damage

Regular maintenance ensures reliable protection and extends the service life of the MCCB.

Advantages

Provides reliable overload and short-circuit protection

Compact design suitable for space-constrained panels

Easy to install and integrate into existing systems

High operational durability and long service life

Conforms to international industrial standards for safety

Conclusion

The ABB T3N225 Molded Case Circuit Breaker is a reliable and durable solution for industrial and commercial circuit protection. Its precise thermal-magnetic protection, compact design, and high short-circuit capacity make it an essential component for safe and efficient electrical distribution systems.