THLC434250 - 250Amp Circuit Breaker

THLC434250 - 250 Amp Circuit Breaker

The THLC434250 is a 250-amp, 3-pole current limiting circuit breaker used in your commercial and industrial power distribution systems. This Type THLC4 breaker features a fixed, non-interchangeable trip unit and an unfused design intended to provide overcurrent and short-circuit protection in compatible equipment. With interrupting ratings of 150kA at 480VAC and 200kA at 240VAC, it is commonly applied in installations where available fault current levels are high. Load-side lugs are included, helping you to simplify conductor termination during installation. The breaker's compact footprint and electrical ratings make it suitable for use in switchboards, panelboards, and other distribution equipment requiring a 250A, 3-pole circuit breaker. Like many breakers in this product family, it was built for long service life and continued operation in demanding electrical environments.

Key Features and Benefits

• 250 Amp current rating
• 3-pole configuration for three-phase systems
• Current limiting construction
• Fixed, non-interchangeable trip unit
• Unfused breaker design
• Includes load-side lugs
• Interrupting capacity of 150kA at 480VAC
• Interrupting capacity of 200kA at 240VAC
• Suitable as a form, fit, and function replacement in compatible equipment

Technical Specifications

• Part Number: THLC434250
• Type: THLC4
• Amperage: 250A
• Poles: 3
• A.I.C. Rating: 150kA @ 480VAC; 200kA @ 240VAC
• Trip Unit: Non-Interchangeable
• Design: Unfused Current Limiting
• Included Accessories: Load-Side Lugs
• Height: 13.06 in.
• Width: 5.72 in.
• Depth: 4.88 in.

Material Compliance and Certifications

• Install and maintain in accordance with applicable electrical codes and manufacturer requirements.
• Verify ratings and compatibility before installation.
• Intended for use by qualified electrical personnel.

Where It Works Best

• The THLC434250 is frequently found in commercial facilities, manufacturing plants, institutional buildings, and other locations that rely on three-phase power distribution. It is often used in switchboards, panelboards, and distribution systems where a 250A breaker with high interrupting capacity is required. For facilities maintaining existing equipment, this breaker can serve as a form, fit, and functional replacement when the original specifications call for a THLC4-type device.