Eaton Cutler Hammer MDLB3800T33W 800A 3 Poles Molded Case Circuit Breaker – Bolt On – 600VAC

The Eaton Cutler-Hammer MDLB3800T33W molded case circuit breaker is designed for reliable protection in industrial and commercial power distribution systems. Built with the MDLB frame style and equipped with an LS (Long-Time and Short-Time) non-interchangeable trip unit, this breaker offers advanced protection against overload and short-circuit conditions. Rated for a maximum of 800 amperes at 40°C with a 3-pole configuration, it supports electrical systems operating up to 600VAC at 50/60Hz and is suitable for reverse feed applications. Its bolt-on mounting design ensures secure installation in panelboards and switchgear, making it an effective solution for demanding electrical protection requirements.

Product Specifications

• Brand: Eaton / Cutler-Hammer
• Model: MDLB3800T33W
• Breaker Type: Molded Case Circuit Breaker
• Frame Type: MDLB (M Frame Style)
• Trip Unit Type: LS Non-Interchangeable Trip Unit
• Maximum Amperage Rating: 800 Ampere
• Number of Poles: 3 Pole
• Mounting Type: Bolt-On
• Frequency: 50/60 Hz
• Reverse Feed Capability: Suitable for Reverse Feed Applications
• Standard Lug Type: Not Included / Configurable

Technical Specifications

• LS trip unit providing Long Delay and Short Delay protection functions
• Adjustable long delay pickup controlled through an adjustable rating plug
• Adjustable short delay pickup with I²t response or flat response time characteristics
• Designed for high-performance circuit protection in industrial environments
• Durable molded case construction for long operational life
• Engineered for reliable performance in heavy-duty electrical distribution systems

Voltage and Ratings

• Maximum AC Voltage: 600 VAC
• Interrupting Capacity:
• • 65 kA @ 240 VAC
  • 50 kA @ 480 VAC
  • 25 kA @ 600 VAC
• Trip Setting: Adjustable 5–10 times the continuous ampere rating
• Maximum Continuous Current: 800A at 40°C

Product Data

• Manufacturer: Eaton / Cutler-Hammer
• Product Series: MDLB Frame Series
• Configuration: Molded Case Circuit Breaker with LS Trip Unit
• Connection Type: Bolt-On
• Warranty: 1 Year
• Application: Industrial power distribution, switchgear systems, and electrical protection requiring adjustable long and short delay trip settings

Important Note

This breaker requires a rating plug in order to operate, and the rating plug is not included with the unit. Please contact us to confirm stock availability and pricing if you require a rating plug to be installed before ordering. The product image shown represents a base model for identification purposes only. Accessories ordered with the breaker can be installed at no additional cost—simply provide your configuration requirements in the order comments during checkout.

Returns are easy

You may return items within 10 days of delivery for a refund.

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