Eaton U4042230MC Meter Breakers - UL Listed, 320 A
Part Number: U4042230MC
Quick Summary
Eaton U4042230MC meter breakers provide reliable protection for B-Line meter mounting enclosures in commercial and industrial power systems. This addresses the common challenge of sourcing robust, code-compliant protection that fits in compact meter sockets while delivering consistent performance. UL listed, EUSERC Approved, and built from galvanized steel with ANSI 61 gray finish, these breakers are designed to withstand demanding environments while maintaining long service life. With a 320 A amperage rating and 22 kAIC interrupt capacity, they support scalable protection for large meters and critical electrical equipment. This combination of certification, material quality, and install-friendly features helps engineers and procurement teams reduce risk and streamline project timelines while optimizing total cost of ownership.
Product Information
Extended Description
U4042230MC Eaton: Eaton B-Line series meter breakers, 320 A, None, Studs, #6-250 MCM, 4 jaws, 1 Position, Ring, Z3614, Galvanized steel, Surface mount, 1Ø/3W
Product Name
Eaton B-Line series meter breakers
Catalog Number
U4042230MC
UPC
782051772104
Product Length/Depth
6 in
Product Height
38 in
Product Width
30 in
Product Weight
110 lb
Compliances
EUSERC Approved
Certifications
UL
Amperage rating
320 A
Interrupt rating
22 kAIC
Material
Galvanized steel
Finish
ANSI 61 gray paint Mill-galvanized
continuous rating meter socket jaws
continuous rating meter socket jaws
Eaton Specification Sheet - U4042230MC
Feature: 320 A amperage rating – Business Impact: Supports high-load meter applications without compromising protection or utility outages, reducing upstream protection coordination costs. Application: Suitable for commercial/industrial service entrances where large loads are present. Feature: 22 kAIC interrupt rating – Business Impact: Enhanced fault tolerance improves system reliability and safety margins during short-circuit events. Application: Critical in facilities with high fault current potential. Feature: 1Ø/3W configuration with 4 jaws and ring, plus studs (#6-250 MCM) – Business Impact: Flexible connection options enable quicker field installation and reliable conductor termination. Application: Meter sockets and service entrances requiring versatile mounting. Feature: Surface mount mounting in galvanized steel with ANSI 61 gray finish – Business Impact: Corrosion resistance and durable aesthetics reduce maintenance costs and improve enclosure integration. Application: Enclosures exposed to challenging environments. Feature: UL certification and EUSERC Approved – Business Impact: Regulatory compliance and utility program eligibility streamline approvals and project acceptance. Application: Utility interconnects and customer-side meter installations. Feature: 6 in length, 38 in height, 30 in width, 110 lb – Business Impact: Predictable footprint aids layout planning and cabinet compatibility in space-constrained installations. Application: Rack and cabinet planning for large-meter enclosures. Industry-context Insight: These specifications align with modern B-Line series expectations, delivering reliability, traceability, and ease of installation for engineering teams pursuing efficient, code-compliant metering solutions.
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FAQs
The U4042230MC is designed for B-Line meter mounting equipment and uses 4 jaws with ring and stud connections (#6-250 MCM). It supports surface mounting in 1Ø/3W configurations, making it compatible with common residential and commercial meter socket layouts when matched to the enclosure and conductor sizing. Verify enclosure clearance and wiring pathways during planning.
Important specs include a 320 A amperage rating and a 22 kAIC interrupt rating, which define fault current handling and protection level. Compatibility with 1Ø/3W configurations and the ability to terminate with studs up to #6-250 MCM ensure alignment with large-meter feeders and utility service requirements.
Yes. The U4042230MC is UL listed and EUSERC Approved, ensuring regulatory compliance and utility acceptance. This reduces project risk and accelerates procurement and installation in utility-connected metering scenarios.
The unit measures 6 in in depth, 38 in high, and 30 in wide, and weighs 110 lb. These dimensions influence enclosure fit, mounting clearances, and the need for appropriate lifting or handling during installation, especially in retrofit projects.
Choose galvanneal/ANSI 61 gray-finish hardware to resist corrosion, ensure proper conductor sizing (#6-250 MCM), and verify mounting is surface-based as specified. UL and EUSERC compliance, along with 22 kAIC protection, contribute to reduced maintenance and improved long-term reliability in demanding environments.