The Eaton Cutler-Hammer HMDLB3800T32W molded case circuit breaker is designed for high-performance protection in demanding commercial and industrial power distribution systems. Built on the reliable M-frame platform, this breaker features a non-interchangeable electronic trip unit with LSI protection functions that provide advanced protection against overloads, short circuits, and instantaneous faults. Rated for up to 800 amperes at 40°C with a 3-pole configuration, the breaker supports electrical systems operating at up to 600VAC. It is also suitable for reverse feed applications, offering flexibility in system design. The unit is supplied without terminals and without a rating plug, allowing customization to match specific system requirements.

Product Specifications

• Manufacturer: Eaton / Cutler-Hammer
• Model: HMDLB3800T32W
• 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 (LSI Functions)
• Frequency: 50/60 Hz
• Maximum Voltage: 600 VAC
• Warranty: One Year

Technical Specifications

• Trip Functions: LSI (Long Delay, Short Delay, Instantaneous)
• Long Delay Pickup (L): Adjustable via rating plug
• Short Delay Pickup (S): Adjustable with fixed I²t response or adjustable flat response
• Instantaneous Pickup (I): Adjustable by setting short-time delay to instantaneous
• 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 distribution panels
• Condition Availability: New, surplus, or professionally refurbished depending on supplier inventory

Important Note

This circuit breaker requires a rating plug to function, which is not included with the unit. A compatible rating plug must be installed to set the long delay pickup and determine the breaker’s operational current rating. The breaker is also supplied without terminals, allowing configuration based on installation requirements. Product images generally represent a base model and are provided for identification purposes only. Accessories ordered with the breaker may be installed prior to shipment to meet the required configuration.

Returns are easy

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

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