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Square D BJA36030 Molded Case Circuit Breaker

  • 30A
  • 3 Pole
  • I-Line
Square D BJA36030
Molded Case Circuit Breaker
Brand Square D
SKU BJA36030
Select Item Condition
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  • 30A
  • 3 Pole
  • I-Line

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Square D BJA36030 - 30A 3 Pole Molded Case Circuit Breaker

Square D BJA36030 - 30A 3 Pole Molded Case Circuit Breaker

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$783.99 In Stock

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Description

Part of the PowerPacT B-Frame lineup, this 30A molded case circuit breaker provides robust thermal-magnetic protection for commercial and industrial applications. It installs into Square D I-Line panelboards and switchboards, serving as a modern upgrade for legacy FC36030 units. Featuring a 65kA interrupting capacity at 480VAC, the BJA prefix indicates high-performance current limiting capabilities alongside standard long-time and instantaneous (LI) trip functions for optimal system safety.

Specifications

Key specifications
Brand Square D
Part Number BJA36030
Series BJA
Amperage 30A
Poles 3
Mounting Style I-Line
Voltage 208Y/120VAC, 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 250VDC
Phase 3
AIC Rating 100kA @ 208Y/120VAC, 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC, 50kA @ 250VDC
Fit and installation
Frame Type BJA
Terminal Type Lugs
For Use With Square D I-Line Panelboards, Switchboards
Wire Gauge 14 AWG - 2/0 AWG (Al/Cu)
Max Wire 2/0 AWG
Min Wire 14 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Motor Operator
Accessories Load Side Lugs Included
Standards CSA C22.2 No 5, EN/IEC 60947-2, NEMA AB 1, UL 489
Approval CCC, CE, CSA, EAC, IEC, NOM, UL
Temp Rating -25C to 70C
Construction Features HACR Rated, Visual Trip Indicator

Product FAQs

8 answers
Which panelboards are compatible with the BJA36030 circuit breaker?

The BJA36030 is designed exclusively for Square D I-Line panelboards and switchboards. It uses an I-Line style plug-in connection and will not fit in standard NQ or NF panels.

Does the PowerPacT BJA36030 replace older Square D legacy breakers?

Yes, the PowerPacT B-frame series is the direct replacement for legacy F-frame I-Line circuit breakers, including the FA and FH series. The BJA36030 maintains the same mounting space dimensions for easy retrofitting into existing I-Line panelboards.

How much bus space does the BJA36030 require in an I-Line panel?

As a 3-pole PowerPacT B-frame breaker, it requires 4.5 inches of I-Line mounting space on the panel bus.

What do the letters BJA signify in the catalog number?

In the Square D nomenclature, B designates the compact PowerPacT B-frame. The J indicates the interrupting rating (65kA at 480VAC), and A denotes the I-Line style plug-in connection.

Can I adjust the trip settings on the BJA36030?

No, the BJA36030 features a standard thermal-magnetic trip unit with fixed thermal and fixed magnetic settings. It does not have adjustable trip dials for fine-tuning the trip curve.

Is the BJA36030 rated for DC applications?

Yes, in addition to its standard AC ratings, this breaker is rated for DC power systems. It carries an interrupting capacity of 50kA at 250VDC.

What type of overcurrent protection does the BJA36030 provide?

The thermal-magnetic trip unit provides long-time overload and instantaneous short-circuit protection (LI functions), which is standard for general-purpose feeder and branch circuit protection. It does not include short-time or ground-fault (LSIG) capabilities.

Does the BJA36030 require a separate mounting kit?

No, it features a built-in I-Line style plug-in connection. It stabs directly onto the interior bus of a compatible I-Line panelboard, requiring no external mounting brackets.

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Reviews

4.3
Rated 4.3 out of 5 stars
Based on 3 reviews
Rating
Ratings
3 reviews
  • RH
    Ryan H.
    Verified Buyer
    Reviewing
    Schneider Electric BJA36020 - 20A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    11/6/25
    Breaker

    It was as described and worked as it should.

  • LO
    Lake O.
    Flag of United States
    Reviewing
    Schneider Electric BJA36020 - 20A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 4 out of 5 stars
    10/7/21
    Staff was very helpful.

    Staff was very helpful.

  • RK
    Robert K.
    Flag of United States
    Reviewing
    Square D BJA36040 - 40A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 4 out of 5 stars
    1/26/21
    Breakers

    Always fast service. Get my breakers the next day.