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Manufacturer Resources
Spec Sheet
Product Specs
- Amperage Rating:
- 800A
- Feed Type:
- Bottom
- Fuse Clip Type:
- Class T
- Phase:
- Three-phase
- Voltage Rating:
- 120/208V
- Department:
- Electrical
- Product Type:
- Barrier kit
- Product Length:
- 48 IN
- Product Details:
- Barrier kit
- Product Height:
- 1 IN
- Product Weight:
- 6.44 LB
- Product Width:
- 38 IN
B-LINE 3MFSBBK – Frequently Asked Questions
1) What is the B-Line 3MFSBBK barrier kit rated for, and will it work on a 400A meter stack?
The B-Line 3MFSBBK barrier kit is rated 800A at 120/208V, three-phase. It is built for an 800A bottom-feed meter stack assembly, so it is not the part to order for a 400A stack or for a single-phase 120/240V installation. Match the amperage, voltage and phase of your stack before ordering.
2) Is the 3MFSBBK for a top-feed or bottom-feed meter stack?
Bottom feed. The 3MFSBBK barrier kit is configured for a bottom-fed 800A stack, where the service conductors enter at the base. A top-fed assembly routes the mains through a different part of the enclosure and needs the barrier arrangement built for that feed direction, so this kit is not an interchange for one.
3) Does this B-Line barrier kit fit a Class T fused meter stack?
Yes. The 3MFSBBK is specified for Class T fuse clips in an 800A, 120/208V three-phase stack. If your stack uses Class R or Class J fuse clips, or a breaker main instead of fuses, this is the wrong kit.
4) How big are the barrier panels in the 3MFSBBK kit and will they fit in my service room?
The kit measures 48 inches in length, 38 inches in width and 1 inch in height, and weighs 6.44 pounds. The 48 by 38 inch footprint is the flat dimension of the barrier material as shipped, so plan for a large flat carton and clear working space in front of the stack when you slide the barriers in.
5) I'm ordering parts for an apartment building service upgrade. What's the exact part number for the 800A three-phase barrier kit?
Order Eaton B-Line part number 3MFSBBK. That is the 800A, 120/208V three-phase, bottom-feed, Class T barrier kit. One model number covers the kit, so there is no finish, hand or size option to specify with it.
How fast can I get the B-LINE 3MFSBBK 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 3MFSBBK come with a warranty?
Absolutely. The B-LINE 3MFSBBK 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 3MFSBBK?
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 3MFSBBK 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.