Eaton Cutler Hammer HJDDC3125W 125 Amp 3-Pole Molded Case Circuit Breaker – Bolt-On Mount – 600VDC

The HJDDC3125W molded case circuit breaker from Eaton / Cutler-Hammer is a high-interrupting-capacity DC-rated circuit breaker designed for reliable protection in industrial and commercial DC power distribution systems. Built on the rugged J-frame platform, this breaker incorporates a thermal magnetic interchangeable trip unit that delivers dependable overload and short-circuit protection. Rated at 125 amperes at 40°C and capable of operating at up to 600VDC, it is well suited for demanding DC applications requiring strong fault interruption performance. This version is supplied without standard terminals, allowing installers to configure compatible lugs or connection accessories based on specific system requirements.

Product Specifications

• Manufacturer: Eaton / Cutler-Hammer
• Model: HJDDC3125W
• Breaker Type: Molded Case Circuit Breaker (MCCB)
• Frame Type: J Frame
• Rated Current: 125 Amp
• Number of Poles: 3
• Mounting Type: Bolt-On
• Trip Unit Type: Thermal Magnetic Interchangeable
• Terminal Type: Without Terminals Standard

Technical Specifications

• Trip Setting Range: 625 – 1250 Amps
• Thermal magnetic protection for overload and short-circuit conditions
• High interrupting capacity DC-rated breaker design
• Suitable for industrial DC power distribution systems
• Rated current based on 40°C ambient operating temperature

Voltage and Ratings

• Maximum Voltage: 600 VDC
• 1 Pole in Series: 42 kA @ 125 VDC
• 2 Poles in Series: 50 kA @ 250 VDC
• 3 Poles in Series: 42 kA @ 600 VDC

Product Data

• Brand: Eaton / Cutler-Hammer
• Series: HJDDC
• Frame Size: J Frame
• Amperage Rating: 125A
• Poles: 3
• Connection Type: Bolt-On
• Trip Unit: Thermal Magnetic Interchangeable
• Standard Lug Type: Without Terminals
• Warranty: 1 Year

Important Note

The product image shown represents a base model and is intended for identification purposes only. The actual breaker configuration may vary depending on accessories or terminal options selected. If accessories are purchased together with the breaker, they can typically be installed during assembly to match the required configuration. Always verify voltage ratings, trip settings, and system compatibility prior to installation to ensure safe and reliable operation of the electrical system.

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

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