Eaton U204 MS21 SS Single Meter Socket - UL Listed
Part Number: U204 MS21 SS
Quick Summary
Eaton U204 MS21 SS is a 200 A single meter socket for underground service connections in industrial facilities. This addresses common field challenges such as corrosion, moisture ingress, and tight installation space that slow commissioning. UL Listed certification ensures safety and code compliance, while stainless steel 304 construction resists corrosion in demanding environments. Underground feed capability, side mounting, and a four-jaw design support #6-250 MCM conductors for a 200 A service. Used with Eaton B-Line sockets, it accelerates procurement and field installation for utilities, commercial buildings, and industrial plants. Its durable stainless steel housing reduces downtime due to corrosion in outdoor or underground installations. 1-pole, 3-wire configuration and ring-style cover simplify wiring and inspection during upgrades.
Product Information
Extended Description
U204 MS21 SS Eaton: Eaton B-Line series single meter sockets, 200 A, Underground, Four-jaw, Ring, 3, Stainless steel type 304, Steel, Side, 1 pole, Three-wire, #6-250 MCM, #6-250 MCM, None
Product Name
Eaton B-Line series single meter sockets
Catalog Number
U204 MS21 SS
UPC
782051560800
Product Length/Depth
4.625 in
Product Height
15 in
Product Width
12 in
Product Weight
14 lb
Certifications
UL Listed
Amperage Rating
200A
Material
Steel
Finish
Stainless steel type 304
Number of jaws
Four-jaw
Number of wires
3 Three-wire
Bypass
None
Feed type
Underground
Mounting method
Side
Number of poles
1
Line lug size
#6-250 MCM
Load lug size
#6-250 MCM
Cover/door type
Ring
Degree of protection
3
Feature: 200 A rating paired with a four-jaw, ring-type cover delivers a secure, high-current connection for underground metering. Impact: The four jaws create balanced clamping force on both line and load lugs, reducing lug movement, heat buildup, and the likelihood of arcing during surge events. Application: Utilities, commercial buildings, and industrial facilities rely on this arrangement to maintain service continuity without field rework during commissioning. Feature: Stainless steel type 304 housing provides exceptional corrosion resistance and mechanical durability in outdoor and underground environments. Impact: It minimizes maintenance cycles, extends replacement intervals, and lowers total cost of ownership by resisting rust and chemical exposure that degrade lesser metals. Application: Outdoor meter sockets installed near pavements, in damp utility pits, or in coastal plants benefit from this robust material. Feature: Side mounting and compact dimensions streamline installation and retrofit work. Impact: Aligning and mounting this socket in tight spaces reduces installation time and field adjustments, improving crew productivity and reducing crane or dexterity constraints. Application: Integrates with Eaton B-Line series mounting rails and compatible enclosures, enabling plug-and-play upgrades in existing meter banks. Feature: Line and load lug sizes of #6-250 MCM support large conductor runs. Impact: Ensures secure termination with ample ampacity, meeting 200 A service requirements while enabling reliable fault current pathways. Application: Ideal for service feeders and branch circuits in high-load commercial or industrial installations. Feature: UL Listed certification validates safety and compliance with electrical codes. Impact: Streamlines project approvals, shortens inspection cycles, and reduces risk during commissioning. Application: Widely specified for electrical distribution equipment in utilities, campuses, and manufacturing campuses. Feature: General dimensional data and weight provide field planning clarity: 4.625 in depth, 12 in width, 15 in height, and 14 lb weight. Impact: Facilitates accurate enclosure selection and reduces field adjustments. Application: Useful for pre-installation checks and layout planning across site drawings.
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FAQs
For underground installations, plan for an underground feed arrangement with side mounting. Use #6-250 MCM conductors as specified, ensure the four-jaw ring-type cover remains accessible for inspections, and verify UL Listed compliance during pull-in and termination. The 200 A rating supports primary feeders, while the compact footprint aids in retrofit projects.
The four jaws provide balanced clamping and strain relief for both line and load conductors, reducing lug movement and contact wear. This translates to steadier electrical contact, lower resistance drift, and improved reliability during high-current campaigns and surges in underground feeders.
Yes. The unit is part of the Eaton B-Line series, featuring side mounting and a ring-type cover that aligns with B-Line mounting rails and compatible enclosures. With #6-250 MCM line/load lugs and a 1-pole, 3-wire configuration, it integrates smoothly into existing underground service installations and retrofit projects.
This meter socket is UL Listed, which provides safety validation and code compliance assurance. Contractors and specifiers rely on UL Listed components to meet electrical distribution requirements and streamline inspection processes during project handoffs.
Stainless steel 304 housing delivers superior corrosion resistance and extended service life in outdoor or damp underground environments, reducing maintenance frequency and downtime. Over the project life, this translates to lower replacement costs and more predictable outage performance for utilities and industrial facilities.