The Eaton Cutler-Hammer HMDLB3800T35W molded case circuit breaker is designed to provide advanced electrical protection for demanding commercial and industrial power distribution systems. Built on Eaton’s robust M-frame platform, this breaker features a non-interchangeable electronic trip unit with LSG protection functions, delivering comprehensive protection against overloads, short circuits, and ground 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 flexible installation in modern power systems. The unit is supplied without terminals and without a rating plug, allowing customization according to specific system requirements.

Product Specifications

• Manufacturer: Eaton / Cutler-Hammer
• Model: HMDLB3800T35W
• 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 (LSG Functions)
• Frequency: 50/60 Hz
• Maximum Voltage: 600 VAC
• Warranty: One Year

Technical Specifications

• Trip Functions: LSG (Long Delay, Short Delay, Ground Fault)
• Long Delay Pickup (L): Adjustable via rating plug
• Short Delay Pickup (S): Adjustable with fixed short delay time (I²t response) or adjustable flat response
• Ground Fault Protection (G): Adjustable ground fault pickup with adjustable ground fault delay (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 to operate, which is not included with the unit. The rating plug determines the long delay pickup setting and overall operational current rating of the breaker. The unit is also supplied without terminals, allowing configuration flexibility based on installation requirements. Product images typically represent a base model and are provided for identification purposes only. If accessories are purchased with the breaker, they may be installed before shipment to match the desired configuration.

Returns are easy

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

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