Eaton Cutler-Hammer LA3300PT 300A 3-Pole Thermal Magnetic Trip Unit for LA Breakers

Eaton · Industrial Automation & Electrical

Description  The Eaton Cutler-Hammer LA3300PT trip unit is a thermal magnetic protection device designed for use with LA and HLA Tri-Pac molded case circuit breaker frame types. Engineered for 300A applications, it provides dependable long-time and instantaneous trip protection for industrial and commercial power distribution systems.     Technical Specifications  Condition New/Never Used Surplus Brand Eaton Cutler-Hammer Category Circuit Breakers Part Number LA3300PT Subcategory Trip Units Series TRI-PAC Circuit Breaker Type LA Protection Type Thermal Magnetic Trip Functions Long-Time and Instantaneous (LI) Amperage Rating 300A Pole Configuration 3-Pole Voltage Rating 600VAC, 250VDC Interrupting Rating 200kAIC at 600VAC, 100kAIC at 250VDC Approval UL Compatible Frame Types 400A LA and HLA Tri-Pac Molded Case Circuit Breakers Dimensions (HxWxD) 10.1" x 5.1" x 5.3" Weight 2.9 lb     Information About LA3300PT The LA3300PT is a 3-pole trip unit from the Eaton Cutler-Hammer TRI-PAC series designed for molded case circuit breaker assemblies in demanding electrical distribution environments. It incorporates thermal magnetic protection technology that combines long-time overload protection with instantaneous short-circuit response for reliable fault interruption. The unit is compatible with 400A LA and HLA Tri-Pac breaker frame types, making it suitable for retrofit, maintenance, and replacement applications in industrial facilities and commercial infrastructure. Built to UL standards, the trip unit supports high interrupting ratings and stable operational performance in medium-voltage power systems. Key Features: Thermal Magnetic Protection: Provides combined overload and short-circuit protection through thermal and magnetic trip mechanisms. 300 Amp Rating: Configured for electrical systems requiring 300A current protection capacity. 3-Pole Configuration: Supports three-phase power distribution and industrial electrical applications. Long-Time and Instantaneous Functions: Delivers LI protection for sustained overloads and immediate fault interruption. High Interrupting Capacity: Rated for 200kAIC at 600VAC and 100kAIC at 250VDC for high-fault-current environments. Wide Voltage Compatibility: Operates in systems up to 600VAC and 250VDC. UL Approved Design: Manufactured to comply with UL safety and performance standards. TRI-PAC Frame Compatibility: Designed for use with LA and HLA 400A molded case circuit breaker frame types. The LA3300PT delivers the reliability and precision required for industrial circuit protection and power distribution applications.

Brand: Eaton · Category: Industrial Automation & Electrical

Key features

• Thermal Magnetic Protection: Provides combined overload and short-circuit protection through thermal and magnetic trip mechanisms.
• 300 Amp Rating: Configured for electrical systems requiring 300A current protection capacity.
• 3-Pole Configuration: Supports three-phase power distribution and industrial electrical applications.
• Long-Time and Instantaneous Functions: Delivers LI protection for sustained overloads and immediate fault interruption.
• High Interrupting Capacity: Rated for 200kAIC at 600VAC and 100kAIC at 250VDC for high-fault-current environments.
• Wide Voltage Compatibility: Operates in systems up to 600VAC and 250VDC.
• UL Approved Design: Manufactured to comply with UL safety and performance standards.
• TRI-PAC Frame Compatibility: Designed for use with LA and HLA 400A molded case circuit breaker frame types.

Specifications

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