Eaton U404MC Meter Breakers - 320 A, UL Listed
Part Number: U404MC
Quick Summary
The Eaton U404MC Meter Breakers deliver reliable metering protection for commercial and industrial power distribution. This unit supports a 320 A rating and 22 kAIC interrupt capacity in a galvanized steel enclosure, designed for surface mounting with 1Ø/3W configurations. A common pain point is achieving accurate meters and rapid fault isolation in tight spaces without compromising safety or service continuity. The U404MC carries UL listing and EUSERC approval, aligning with utility standards and local code requirements. Built to integrate with Eaton B-Line metering equipment, it offers compatibility with standard jaw assemblies and ease of installation, while enabling reduced maintenance and predictable lifecycle costs through robust protection and durable finish.
Product Information
Extended Description
U404MC Eaton: Eaton B-Line series meter breakers, 320 A, Studs, 4 jaws, 1 Position, Ring, 3R, Z3614, 22 kAIC, Galvanized steel, Number of wires 1Ø/3W, Surface mount
Product Name
Eaton B-Line series meter breakers
Catalog Number
U404MC
UPC
782051815252
Product Length/Depth
6 in
Product Height
38 in
Product Width
24 in
Product Weight
100 lb
Compliances
EUSERC Approved
Certifications
UL
Amperage rating
320 A
Interrupt rating
22 kAIC
Material
Galvanized steel
Finish
ANSI 61 gray paint Mill-galvanized
Feature: High amperage rating and interrupt capacity → Business Impact: Enhanced fault withstand and selective protection reduce upstream outages and equipment stress → Application: Suitable for 320 A service feeders in commercial/industrial metering setups. Feature: Galvanized steel construction with ANSI 61 gray finish → Business Impact: Superior corrosion resistance and long service life in harsh environments → Application: Exterior or utility-adjacent installations where weathering is a concern. Feature: UL listing and EUSERC approval → Business Impact: Streamlined code compliance and utility acceptance, lowering project risk → Application: Approved for utility metering applications and building modernizations. Feature: Compact, surface-mount 6 in L × 24 in W × 38 in H footprint with 100 lb weight → Business Impact: Easier room planning and mounting in restricted spaces, reducing installation time and labor → Application: Metering enclosures in limited-sitting mechanical rooms or electrical closets. Feature: 1Ø/3W wiring capability with 22 kAIC rating → Business Impact: Flexible configuration for single-phase metering with robust protection → Application: Residential-commercial mixed-use facilities requiring reliable metering protection.
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FAQs
Yes. The U404MC is designed for surface-mount installations in 1Ø/3W metering configurations and is compatible with standard B-Line jaw assemblies, helping you integrate quickly with existing meter sockets and distribution boards.
The unit offers a 320 A amperage rating and a 22 kAIC interrupt rating, enabling high fault withstand while protecting downstream equipment and meters in commercial and industrial applications.
Yes. It carries UL certification and is EUSERC Approved, aligning with utility requirements and building codes for metering installations and group metering in registered facilities.
The U404MC is UL-listed and EUSERC-approved, with a galvanized steel construction finished in ANSI 61 gray paint, providing durable protection in demanding environments.
The enclosure footprint is 6 in depth × 24 in width × 38 in height, with a product weight around 100 lb, supporting stable mounting and easier material handling during install and service.