ABB Enclosed Circuit Breaker
- rebeccavanessendel
- 3 days ago
- 3 min read

Reliable Breakers for Every Application
ABB's enclosed circuit breakers offer all the advantages and accessories of a circuit breaker packaged in an enclosure for nearly any application requiring a means of disconnect.
Ideal for a variety of locations including general purpose or rainproof surface mounting. 100% rated products are available in configurations ranging from 15 to 1200 A to meet the needs of many applications.
Tmax® XT
The SACE®Tmax® XT molded case circuit breaker (MCCB) range helps ensure extreme performance and protection features up to 1200 amps. Tmax XT MCCBs are designed to maximize ease of use, integration and connectivity, and are built to deliver safety, reliability and quality.
SACE FORMULA
ABB's FORMULA molded case circuit breaker line offers simplicity and quality in some of the smallest dimensions available. The protection trip unit has fixed thermal and magnetic threshold values to put the circuit breaker into service more rapidly.
Q-Line Miniature Circuit Breakers
15 to 100A. THQL and THQC Type.
Available in cable in cable out (lug-lug) versions.
Thermal Magnetic E150
15 to 100A. ABB's industrial thermal-magnetic E150 breakers provide a proven, cost-effective solution.
Features and Benefits
UL /cUL certified in accordance with UL 489 / CSA 22.2 No. 5-13.
Seismic certified in accordance with CBC-2019/IBC-2018
Short circuit ratings equal to the installed circuit breaker
Suitable for use as service equipment
RELT - Reduced Energy Let-Through
Provision for a Surge Protection Device
Key interlocks for NEMA 1 Type Enclosures
Complete set of factory or field installable accessories
Enclosure Types

NEMA Type 1
Enclosed circuit breakers are available with certified NEMA Type 1 surface-mount and flush-mount designs with padlocking possibility for lockout/tagout (LOTO).
Product Features:
Suitable for use as service equipment (SE) as noted.
60°C/75°C conductor ratings
Short circuit ratings are equal to the rating of the installed breaker.
Surface or Flush mounted
Compatible with Kirk keylock accessory

NEMA Type 3R
Enclosed circuit breakers are available with certified NEMA Type 3R rainproof enclosures with lockable access door.
Product Features:
Suitable for use as service equipment (SE) as noted.
60°C/75°C conductor ratings
Short circuit ratings are equal to the rating of the installed breaker.

NEMA Type 4/4X (316 stainless steel)
Enclosed circuit breakers are available with certified NEMA Type 4/4X enclosures that provide an additional level of protection against corrosion with lockable access door.
Product Features:
Suitable for use as service equipment (SE) as noted.
60°C/75°C conductor ratings
Short circuit ratings are equal to the rating of the installed breaker.
316 Stainless Steel

NEMA Type 12
Enclosed circuit breakers are available with certified NEMA Type 12 enclosures that provide a degree of protection for the equipment inside the enclosure against ingress of solid foreign objects with padlocking possibility for LOTO.
Product Features:
Suitable for use as service equipment (SE) as noted.
60°C/75°C conductor ratings
Short circuit ratings are equal to the rating of the installed breaker.
Power-Flo Technologies is proud to partner with ABB and their enclosed circuit breakers that provide the perfect balance of safety, reliability, and flexibility for nearly any application. With a wide range of models, ampere ratings, and enclosure types, ABB ensures that contractors and facility managers can find a solution tailored to their needs—whether it’s maximizing performance with Tmax® XT, streamlining installation with SACE® FORMULA, or ensuring rugged protection with NEMA-rated enclosures. Built with quality, compliance, and long-term dependability in mind, ABB continues to set the standard in circuit protection.
