B-Line Eaton series single met...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$7,209.60
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B-Line Eaton series single meter sockets, 100 A, Test block, Ring type, 3R, ANSI 61 gray painted, #14-2/0, #14-2/0, Steel, Surface mount, 7 jaws, 1 po

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Model: 127 TB MS20

In Stock (leaves warehouse same day if ordered before 3pm ET)

$7,209.60
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Eaton B-Line series single meter sockets, 100 A, Test block, Ring type, 3R, ANSI 61 gray painted, #14-2/0, #14-2/0, Steel, Surface mount, 7 jaws, 1 position, 3Ø/4W, Ring protector

Manufacturer Resources

Product Specs

Amperage Rating:
200A
Bypass:
Test block
Certifications:
UL
Compliances:
EUSERC Approved
Cover Door Type:
Ring
Degree Of Protection:
3R
Line Lug Size:
#6-250 MCM
Load Lug Size:
#6-250 MCM
Mounting Method:
Surface mount
Number Of Jaws:
7
Number Of Positions:
1
Number Of Wires:
3Ø/4W
Product Height:
30 in
Product Length Depth:
6 in
Product Weight:
38 lb
Product Width:
14 in
Special Features:
Ring protector
Department:
Electrical
Product Finish:
ANSI 61 gray paint
Product Material:
Galvanized steel

B-LINE 127 TB MS20 – Frequently Asked Questions

1) Will a 7-jaw meter socket work for a 3-phase 4-wire service?
Yes. The B-Line 127 TB MS20 meter socket is a 7-jaw, single-position socket configured for 3-phase, 4-wire (3O/4W) service. Seven jaws is the standard jaw count for a network or three-phase four-wire meter; a 4-jaw socket is what you use on single-phase 3-wire, so do not swap one for the other.
2) Can this B-Line meter socket be mounted outdoors on an exterior wall?
It is built for outdoor wall mounting. The enclosure is Type 3R, which is rain, sleet and snow rated, the body is galvanized steel finished in ANSI 61 gray paint, and it is a surface-mount can, so it lands flat on the wall rather than recessing into it. If your utility or architect wants the socket flush in the wall, this is not the one.
3) Is this a ring-type or ringless meter socket?
Ring type. The cover is secured with a sealing ring, and a ring protector is included as a standard feature. Utilities specify one or the other and they are not interchangeable in the field, so if your local utility requires a ringless (lift-off) cover socket, you need a different can.
4) Is this meter socket EUSERC approved and UL listed?
Both. The B-Line 127 TB MS20 socket is UL certified and EUSERC approved, which is the approval western US utilities look for on commercial metering equipment. Confirm the exact socket number against your serving utility's approved equipment list, since each utility publishes its own.
5) Will this socket accept 250 MCM service conductors?
Yes. Both the line and load lugs are rated for #6 through 250 MCM, so you can terminate anything from a #6 branch feeder up to 250 MCM copper or aluminum service entrance conductors without adding pin or reducing adapters.
6) What does the test block bypass on this meter socket do for me?
The 127 TB MS20 is furnished with a test block for bypass. That lets the meter be tested or changed out without dropping load through the socket jaws, which is why many utilities and EUSERC jurisdictions require it on commercial three-phase services. If your utility spec calls for a lever bypass instead, specify that variant.
7) How much wall space do I need for this B-Line meter socket, and is it a one-man set?
Plan for a can measuring 30 in high, 14 in wide and 6 in deep, plus working clearance in front per code and room above and below for your conduit runs. At 38 lb it is manageable for one person to hang on lag anchors, though two sets of hands make lining up the ring and meter easier.
8) How many meters does this socket serve, and what do I use for multiple tenants?
This is a single-position socket, so it meters one service only. For a multi-family or strip-retail building where each tenant needs its own meter, use a multi-position meter pack or a gang socket rather than hanging several single cans, which keeps one set of service conductors and one main.
9) Is the gray finish on this meter socket suitable for a coastal or corrosive site?
The can is galvanized steel with ANSI 61 gray paint over it, the standard utility gray finish for exterior electrical gear. That handles normal outdoor exposure in a 3R enclosure. For heavy salt spray or a wash-down industrial area, a stainless enclosure is the better call.
How fast can I get the B-LINE 127 TB MS20 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the B-LINE 127 TB MS20 come with a warranty?
Absolutely. The B-LINE 127 TB MS20 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the B-LINE 127 TB MS20?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the B-LINE 127 TB MS20 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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