The Eaton Cutler-Hammer HMDLB3800T33W molded case circuit breaker is designed to provide advanced protection for commercial and industrial power distribution systems. Built on Eaton’s durable M-frame platform, this breaker incorporates a non-interchangeable electronic trip unit with LS protection functions to safeguard electrical systems from overloads and short-circuit conditions. Rated for up to 800 amperes at 40°C and configured with three poles, it is suitable for applications operating at up to 600VAC. The breaker is reverse feed capable, offering greater flexibility for installation in modern power systems. Supplied without terminals and without a rating plug, the unit allows users to configure the breaker according to specific application requirements.

Product Specifications

• Manufacturer: Eaton / Cutler-Hammer
• Model: HMDLB3800T33W
• Amperage Rating: 800 Amperes Maximum
• Number of Poles: 3 Pole
• Breaker Type: Molded Case Circuit Breaker
• Mounting Type: Bolt-On
• Frame Type: M Frame
• Trip Unit Type: Electronic Non-Interchangeable Trip Unit (LS Functions)
• Frequency: 50/60 Hz
• Maximum Voltage: 600 VAC
• Warranty: One Year

Technical Specifications

• Trip Functions: LS (Long Delay and Short Delay)
• Long Delay Pickup (L): Adjustable via rating plug
• Short Delay Pickup (S): Adjustable with fixed short delay time (I²t response) or adjustable flat response
• Trip Setting Range: Adjustable 5–10 times the continuous ampere rating
• Reverse Feed Capability: Suitable for reverse feed applications
• Operating Temperature Rating: 40°C

Voltage and Ratings

• Rated Voltage: Up to 600 VAC
• Interrupting Capacity @ 240VAC: 100 kA
• Interrupting Capacity @ 480VAC: 65 kA
• Interrupting Capacity @ 600VAC: 35 kA
• Frequency Rating: 50/60 Hz

Product Data

• Product Series: Eaton M-Frame
• Product Category: Molded Case Circuit Breaker
• Connection Type: Bolt-On
• Terminal Configuration: Without terminals
• Rating Plug: Not included (required for operation)
• Mounting Compatibility: Designed for compatible Eaton switchgear and panelboards
• Condition Availability: New, surplus, or professionally refurbished depending on supplier inventory

Important Note

This circuit breaker requires a rating plug in order to operate, which is not included with the unit. The rating plug determines the long delay pickup setting and overall operational current rating. The breaker is also supplied without terminals, allowing installation flexibility depending on system requirements. Product images typically represent a base model and are provided for identification purposes only. Accessories ordered with the breaker may be installed prior to shipment to match the desired configuration.

Returns are easy

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

FREE Shipping on orders over $149.

My Circuit Breakers offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

Same Day Shipping

We strive to ship out your items within one business day.

In rare circumstances, My Circuit Breakers may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.