Eaton MBB150BTSCR Meter Breaker - UL Listed, 120/240V
Part Number: MBB150BTSCR
Quick Summary
The MBB150BTSCR is a retrofit residential meter breaker designed to protect 120/240 V single-phase metering installations. Many projects face retrofit challenges, from compatibility gaps to installing compact, service-friendly devices in existing panels. This Eaton unit pairs a four-jaw aluminum bus with a two-cover compact design, delivering reliable performance in tight spaces. Certified UL Listed and installed in a NEMA 3R enclosure, it supports outdoor or semi-enclosed applications while maintaining safety and compliance. By prioritizing compatibility with Type BR breakers and simple top/bottom feed, it also helps reduce labor time and total cost of ownership. For engineers and procurement teams, this combination translates to safer metering upgrades and faster project throughput.
Product Information
Extended Description
MBB150BTSCR Eaton: Eaton's Retrofit Meter Breaker,150A, Aluminum Bus,Overhead/underground, Surface mounting, Four-jaws,Single-phase, RingType, 120/240V
Product Name
Eaton residential meter breaker
Catalog Number
MBB150BTSCR
UPC
782114860137
Product Length/Depth
5.38 in
Product Height
19.75 in
Product Width
14.44 in
Product Weight
28 lb
Warranty
10 year
Certifications
UL Listed
Type
Two cover compact design
Interrupt rating
22 kAIC
Box size
E
Enclosure
NEMA 3R
Ground
#6-250 kcmil
Voltage rating
120/240 V
Number of sockets
1
Phase
Single-phase
Used with
Type BR breakers
Bus material
Aluminum
Feed type
Top/bottom
Main circuit breaker
CSR2150
Number of jaws
Four-jaw
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Dimensional Drawing - METER BREAKER WEST COAST STYLE 96-5535
Eaton Specification Sheet - MBB150BTSCR
Feature → Business Impact → Application: The MBB150BTSCR uses a four-jaw, ring-type connection with an aluminum bus, delivering a robust, low-resistance path that improves overall electrical performance in residential metering upgrades and reduces voltage drop in long runs. This results in measurable efficiency gains and enhanced protection in single-phase 120/240 V circuits, ideal for retrofit projects in both homes and light commercial settings. Feature → Business Impact → Application: Top/bottom feed capability simplifies installation in existing enclosures, enabling faster retrofits and minimizing panel modifications. This reduces field labor and downtime, especially in retrofit programs where space is constrained and downtime costs are high. Feature → Business Impact → Application: The MBB150BTSCR’s compact two-cover design fits narrow spaces without compromising accessibility, enabling safer maintenance and faster fault isolation in busy electrical rooms. Feature → Business Impact → Application: UL Listed certification and a rugged NEMA 3R enclosure provide compliance and longevity, supporting outdoor installations and weather exposure while meeting strict safety standards in commercial-residential sites. Feature → Business Impact → Application: The unit’s 150 A rating and compatibility with Type BR breakers deliver scalable protection for evolving metering requirements, giving engineers a future-proof solution for updating legacy systems and supporting demand growth.
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FAQs
The MBB150BTSCR is designed for residential metering upgrades and is compatible with Type BR breakers. It uses a four-jaw, ring-type aluminum bus and supports top/bottom feed, making retrofit installations straightforward in cabinets that previously housed BR devices. Always verify enclosure space and clearance before replacement.
Key specs include a 150 A interrupt rating, 120/240 V voltage rating, single-phase configuration, and four-jaw aluminum bus with top/bottom feed. The unit is UL Listed and designed for RingType connections, making it suitable for both overhead and underground service installations in residential metering applications.
Yes. The product uses a NEMA 3R enclosure, which is rated for outdoor or semi-exposed environments. Its rugged build and UL listing provide protection against weather and practical trafficking in outdoor meter rooms or exterior panels, enabling safer and compliant upgrades to existing metering infrastructure.
A 10-year warranty coupled with UL Listed certification reduces risk during long-term operation and retrofit programs. This translates to lower maintenance costs, fewer unexpected replacements, and greater confidence in regulatory compliance, which collectively improve the total cost of ownership for metering upgrades.
Eaton provides several downloads for the MBB150BTSCR, including the Residential and Light Commercial Metering catalog, a dimensional drawing, and the official specification sheet. These resources help validate fit, mounting, and electrical connections before ordering and installation.