MT3400T - 400 Amp Trip Unit
- 400 Amp
- 600VAC
- 3 Pole
Purchase Options: New In Box
MT3400T - 400 Amp Trip Unit Description
MT3400T - 400 Amp Thermal-Magnetic Trip Unit
Looking for dependable, high‑performance protection for your electrical systems? The Eaton MT3400T Trip Unit delivers just that—bringing superior safety and load‑handling capability when paired with the right breaker frame. It’s the ideal choice for homeowners and contractors who want peace of mind without the fuss.
Key Features and Benefits
- High‑Capacity Performance: With a 400 Amp rating, this trip unit handles demanding electrical loads with ease, as long as it's installed into a compatible frame.
- Dual Protection (Thermal & Magnetic): You get the best of both worlds: thermal protection for gradual overloads and magnetic protection for sudden faults—helping prevent damage from both slow and fast electrical issues.
- Balanced, Three‑Pole Design: Ensures consistent power distribution across all three phases, which means smoother performance and enhanced safety in multi‑phase setups.
- Tailored Fit for MDL & HMDL Series: Made to work flawlessly with MDL and HMDL frames in J‑K sizes (Series C), this unit slides right into the proper configuration without hassle.
Technical Specifications
- Current Rating: 400 Amp
- Trip Mechanism: Thermal‑Magnetic (combines two protection approaches)
- Poles: Three‑Pole
- Compatible Breaker Types: Eaton MDL and HMDL
- Frame Size / Series: J‑K Frame, Series C
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Dimensions:
- Length: Approx. 7"
- Height: Approx. 4"
- Width: Approx. 4"
- Weight: Around 3 lb
Material Compliance and Certifications
- UL Listed: The MT3400T is UL Listed, which means it meets stringent safety and performance standards in North America. Just pair it with an approved MDL or HMDL frame, and you’ll have a full, code‑compliant circuit breaker that won’t let you—or your electrical system—down.
Suitability
- Need reliable protection for residential or commercial electrical setups? This trip unit shines in both environments. Use it in homes, small offices, or larger commercial spaces that require a 400 Amp solution. It’s particularly ideal when you want high‑quality overload and short‑circuit protection, without adding complexity.
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:3.75
- Height:7.5
- Depth:3.38
- Poles:3
- Amperes:400
- A.I.C. Rating & Volts:600VAC
- Type:MT
- Sub-Category:TRIP UNIT
- Approx Dimensions:3.75"W x 7.5"L x 3.38"D
- Additional Notes:Thermal Magnetic Only for MDL & HMDL Frames. Magnetic Trip Adjustable 5-10 Times Continuous Ampere Rating.
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
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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).