Hydel MSC400TW- Meter Socket Box with 1/2 inch Compression Stud U/G 200A 600V

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Description

Ontario Meter Base • Hydel MSC400TW

Hydel MSC400TW 200A Underground Meter Socket with Isolated Neutral Capability, 1/2" Compression Studs & 2 x 2-1/2" Knockouts

Built for Ontario residential and light commercial service installations, the Hydel MSC400TW is a 200 amp, 600 volt, 4-jaw underground meter base with 1/2" compression studs, 2 x 2-1/2" knockouts, and a CSA/NEMA 3R enclosure. This model is especially relevant where electricians, contractors, and inspectors are focused on correct neutral bonding practice and isolated neutral requirements at the service entrance.

200A 600V Underground Use Only 4 Jaw 2 x 2-1/2" KO #6–250 MCM CU/AL

⚠️ Isolated Neutral Matters in Ontario

On many Ontario jobs, installers are specifically looking for meter bases that support isolated neutral configurations. That is not just a preference issue — neutral bonding in meter bases is a real inspection and safety topic. When an isolated neutral configuration is used, the bonding conductor and service bonding must still be completed correctly in line with code and utility practice.

  • This page is written to help contractors identify the MSC400TW quickly when isolated-neutral-ready meter bases are being requested.
  • The Hydel catalogue for the MSC series lists the insulated neutral accessory and the standard underground meter socket specs for this model family.
  • Always confirm final field installation, bonding, and approval requirements with the current utility guide, OESC rules, and the inspector having jurisdiction.
Review the current utility metering guide, shop drawing, and local inspection requirements before energization.

🔌 Underground Service Ready

Designed for underground use only, making it suitable for residential service entrance work, service upgrades, and meter base replacement applications in Ontario.

🧰 Compression Stud Design

Includes 1/2" line studs for compression-type wire connectors and supports a No. 6–250 MCM CU/AL load conductor range.

📏 Standard KO Configuration

The MSC400TW uses 2 x 2-1/2" knockouts and a shallower enclosure than the MSC400TW3, making it the right fit where that conduit opening size is required.

Hydel MSC400TW Meter Socket Overview

The Hydel MSC400TW is a contractor-focused 200A underground meter socket for service entrance applications where a 4-jaw, 600V meter base with 1/2" compression studs and standard 2 x 2-1/2" knockout configuration is required. For Ontario electricians, this model is a strong fit for service upgrades, new residential builds, and meter base replacements where conduit size and isolated neutral considerations matter.


Because many electricians search by exact part number, common buying phrases for this unit include: Hydel MSC400TW, 200 amp underground meter socket, meter base with isolated neutral, Ontario meter base 200A, and Hydel 2 x 2-1/2" KO meter socket.


  • Ideal for underground service entrance installations
  • Useful where 2-1/2" knockout openings are required rather than 3"
  • Supports Ontario-focused searches around isolated neutral meter base
  • Suitable for contractors, builders, panel upgrade specialists, and electrical wholesalers

Technical Specifications

Specification Details
Manufacturer Hydel
Model MSC400TW
Type Underground (U/G) meter socket
Amperage Rating 200A
Voltage Rating 600V
Jaw Configuration 4 Jaw
Line Connection 1/2" compression studs
Conductor Range No. 6 – 250 MCM CU/AL
Knockouts 2 x 2-1/2" KO
Enclosure CSA / NEMA 3R
Dimensions 18" H x 12" W x 4-3/4" D
Weight 17 lbs
Application For underground use only

Typical Ontario Applications

  • Residential service upgrades
  • New home electrical service installations
  • Meter base replacements
  • Light commercial underground metering setups

Why Contractors Choose This Model

  • Exact-part-number demand in the field
  • Standard 2 x 2-1/2" KO configuration
  • Hydel brand familiarity in Ontario
  • Supports isolated-neutral-focused buying requirements

Hydel MSC400TW vs Hydel MSC400TW3

The main difference between these two Hydel meter bases is the knockout configuration and resulting enclosure depth. That distinction matters when the conduit layout on the job specifically calls for either 2-1/2" or 3" openings.

Feature MSC400TW MSC400TW3
Amperage 200A 200A
Voltage 600V 600V
Type Underground Underground
Jaw Configuration 4 Jaw 4 Jaw
Line Connection 1/2" compression studs 1/2" compression studs
Knockouts 2 x 2-1/2" KO 2 x 3" KO
Depth 4-3/4" 5-1/8"
Neutral Focus Used where neutral bonding/isolation practice is relevant Used where neutral bonding/isolation practice is relevant
Need the 3" knockout version?

If your project requires the deeper enclosure and 2 x 3" knockouts, view the Hydel MSC400TW3 meter socket .

Choose MSC400TW when the job specifically calls for the 2 x 2-1/2" knockout version.

Downloads & Resources

Use the documents below to review product details, drawing references, and Hydel’s broader service entrance product range.

What the shop drawing helps confirm

  • Overall box size and depth
  • Bottom knockout arrangement
  • Compression stud layout
  • Isolated neutral assembly reference

What the Hydel catalogue helps confirm

  • MSC400TW part-number listing
  • 2 x 2-1/2" KO distinction vs MSC400TW3
  • 200A / 600V / 4-jaw configuration
  • No. 6–250 MCM CU/AL conductor range

Frequently Asked Questions

Is the Hydel MSC400TW an underground meter socket?
Yes. The MSC400TW is listed for underground use only.
What is the difference between MSC400TW and MSC400TW3?
The key difference is the knockout and depth configuration. The MSC400TW uses 2 x 2-1/2" KO with a shallower enclosure, while the MSC400TW3 uses 2 x 3" KO and is deeper.
Does this meter base use compression studs?
Yes. The Hydel MSC400TW comes with 1/2" compression studs for compression-type wire connectors.
Why is isolated neutral important on Ontario jobs?
Neutral bonding at the meter base is an active code, inspection, and utility issue. Ontario installers often look for models that support proper isolated-neutral practice because utilities and inspectors pay close attention to how the neutral is bonded or isolated and how the service bonding conductor is completed.
What conductor range does the MSC400TW support?
The listed load conductor range is No. 6 to 250 MCM CU/AL.
Need the 3" knockout version?

If your project requires the deeper enclosure depth and 3" knockouts, view the Hydel MSC400TW meter socket .

Contractor Pricing for Meter Bases & Service Entrance Products

Working on a service upgrade, custom home, or multi-unit electrical project in Ontario? Contact MarsLED for bulk pricing, contractor support, and product sourcing on Hydel meter bases and related electrical distribution products.

Explore More Electrical Service Products

MarsLED supplies Hydel meter bases and service entrance products to electricians and contractors across Toronto, Mississauga, Brampton, Vaughan, Hamilton, Milton, Kitchener-Waterloo, Cambridge, London, Ottawa, Barrie, Kingston and across Ontario.

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