MDL3400 - 400 Amp Circuit Breaker
- 400 Amp
- 25k @ 600VAC; 50k @ 480VAC; 65k @ 240VAC
- 3 Pole
Purchase Options: New In Box
MDL3400 - 400 Amp Circuit Breaker Description
MDL3400 - 400 Amp Circuit Breaker
Delivering dependable protection without the fuss, the Eaton MDL3400 (Series C) molded case circuit breaker combines smart engineering with user‑friendly features. Designed for enterprise-grade electrical setups, this breaker brings solid safety performance and easy installation—all wrapped up in a clean, efficient package.
Key Features and Benefits
- High fault‑current toughness: Rated for an impressive 65 kAIC at 240 Vac and 50 kAIC at 480 Vac, this breaker can handle tough short‑circuit conditions with confidence.
- Consistent trip performance: Featuring fixed thermal and fixed magnetic trip settings that work reliably out‑of‑the‑box, no finicky calibrations needed.
- Built to endure: With a sturdy, well‑made build, the MDL3400 stands up to demanding conditions—ideal for both indoor and covered outdoor installations.
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Compact and manageable: At only 22.86 cm × 12.7 cm × 12.7 cm and weighing around 1.31 kg, it’s light enough for fast, hassle‑free mounting.
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Trusted legacy: Part of Eaton’s Series C line—renowned for performance—and backed by a warranty (one year from installation or eighteen months from shipment).
Technical Specifications
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Amperage Rating: 400 A
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Voltage Rating: 600 Vac and 250 Vdc
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Frequency: 50 / 60 Hz
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Interrupting Ratings:
- 65 kAIC (240 Vac)
- 50 kAIC (480 Vac)
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Poles: Three‑pole configuration
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Trip Mechanism: Fixed thermal and magnetic trip
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Frame Type: MDL
Material Compliance and Certifications
- UL Listed: Meets strict safety benchmarks for performance
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Compliant with Eaton Selling Policy 25‑000: Ensures consistent quality and reliability
Suitability
- If you're safeguarding critical electrical systems—whether in manufacturing plants, commercial buildings, or utility setups—the MDL3400 is the go‑to choice. It combines dependable fault protection with a compact, installation‑friendly design. No matter if you're working in a sprawling factory or a busy service space, this breaker gives you peace of mind with minimal hassle.
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. All trademarks and registered trademarks are the property of their respective owners.
Specifications
- Width:8.25
- Height:16.0
- Depth:4.06
- Poles:3
- Amperes:400
- A.I.C. Rating & Volts:25k @ 600VAC; 50k @ 480VAC; 65k @ 240VAC
- Type:MDL
- Approx Dimensions:8.25"W x 16.00"H x 4.06"D
- Additional Notes:Thermal-magnetic circuit breaker with interchangeable trip unit. 40°C rated. HACR rated. This item includes load terminals.
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
FREE shipping on breaker orders over $100 and all other items with orders over $500.
CIRCUIT BREAKER SUPERSTORE® 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, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.
CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).