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Siemens B350 - 50A 3 Pole Molded Case Circuit Breaker

Brand Siemens
SKU B350
2.5
Rated 2.5 out of 5 stars
2 Reviews
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99

Siemens B350 - 50A 3 Pole Molded Case Circuit Breaker

Brand Siemens
SKU B350
2.5
Rated 2.5 out of 5 stars
2 Reviews
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Siemens B350 - 50A 3 Pole Molded Case Circuit Breaker

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$75.79 In stock

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DescriptionSpecificationsSuperClubWarranties
Description
Designed for heavy-duty applications, this 50A Siemens molded case circuit breaker provides essential long-time and instantaneous trip functions. The 3-phase unit ensures consistent performance across demanding commercial environments. The bolt-on mounting style ensures a firm connection within Siemens P1 panelboards. It also serves as a substitute for BAB3050, THQB32050, and QOB350 configurations. Equipped with standard load side lugs, the breaker accepts 8-6 AWG copper conductors.

Specifications

Brand Siemens
Series B
Part Number B350
Amperage 50A
Voltage 240VAC
Poles 3
Phase 3
AIC Rating 10kA @ 240VAC
Mounting Style Bolt-On
Terminal Type Lugs
For Use With Siemens P1 Panelboards
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Wire Gauge 8-6 AWG (Cu), 8-4 AWG (Al)
Max Wire 6 AWG (Cu), 4 AWG (Al)
Min Wire 8 AWG
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment
Accessories Load Side Lugs Included
Standards CSA C22.2 No. 5, UL 489
Approval CSA, HACR, UL
Temp Rating 40C
Construction Features HACR Rated, Common Trip

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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.

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International Shipping

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2.5
Rated 2.5 out of 5 stars
Based on 2 reviews
Total 5 star reviews: 0 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 1
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2 reviews
  • LB
    Lawrence B. G.
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    2/12/26
    Supervisor

    Received breakers in timely manner, your response time was outstanding.

    Was this helpful?
  • EC
    Elias C.
    Verified Buyer
    I do not recommend this product
    Rated 1 out of 5 stars
    10/17/25
    Website description and purchase # reflect new...i got used breakers and they charged me new

    I sent this email to the "contact us" address and no response. I’m reaching out regarding my recent order of circuit breakers order # 10030572092, Upon inspection, the breakers I got show clear signs of prior use (bolt down holes have gouges where theyve been attached to a panel). These were sold and invoiced as new units.

    When placing the order, I had originally wanted refurbished breakers but it said that sufficient stock was unavailable—so I chose to purchase new ones at the higher price. Given that the items received are used, I’m requesting a credit for the difference between the new and refurbished pricing.

    If this adjustment cannot be made, please confirm the process for returning the used breakers for a full refund.

    I would appreciate a prompt response so this can be resolved quickly.

    Was this helpful?

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