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Siemens BQD340 - 40A 3 Pole Molded Case Circuit Breaker

Brand Siemens
SKU BQD340
4.9
Rated 4.9 out of 5 stars
58 Reviews
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99

Siemens BQD340 - 40A 3 Pole Molded Case Circuit Breaker

Brand Siemens
SKU BQD340
4.9
Rated 4.9 out of 5 stars
58 Reviews
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Siemens BQD340 - 40A 3 Pole Molded Case Circuit Breaker

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$266.80 In stock

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DescriptionSpecificationsSuperClubWarranties
Description
Engineered for commercial power distribution, the Siemens BQD340 is a 3-pole, 40A molded case circuit breaker from the SENTRON family. This unit features a bolt-on mounting style, making it compatible with Siemens P1, P2, P3, P4, and P5 panelboards. It includes load side lugs and a non-interchangeable trip unit. Rated for 65kAIC at 240VAC and 14kAIC at 480Y/277VAC, it delivers reliable long-time and instantaneous (LI) protection. The breaker is HACR and HID rated for versatile application.

Specifications

Brand Siemens
Series BQD
Part Number BQD340
Amperage 40A
Voltage 240VAC, 480Y/277VAC, 125/250VDC
Poles 3
Phase 3
AIC Rating 65kA @ 240VAC, 14kA @ 480Y/277VAC, 14kA @ 125/250VDC
Mounting Style Bolt-On
Terminal Type Lugs
For Use With Siemens P1, P2, P3, P4, P5 Panelboards
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed
Wire Gauge 14-6 AWG (Cu), 12-6 AWG (Al)
Max Wire 6 AWG
Min Wire 14 AWG (Cu), 12 AWG (Al)
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch
Accessories Load Side Lugs Included
Standards CSA C22.2 No. 5, UL 489
Approval CSA, HACR, UL
Temp Rating 40C
Construction Features HACR Rated, HID Rated, Reverse Feed, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism

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Warranties

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When shopping with SuperBreakers, you’ll have peace of mind knowing that every single item you purchase includes a 60 day warranty, free of charge. Why such confidence? Because only the highest quality electrical parts have a place on our shelves, and we stand by every single one we sell.

If anything goes wrong with your item that is not a result of misuse or normal wear and tear, we’ll gladly replace it at no cost to you.

Click here to read our full warranty details

Shipping

Free Shipping Policy

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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Same Day Shipping

We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
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Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping

All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.

4.9
Rated 4.9 out of 5 stars
Based on 58 reviews
Total 5 star reviews: 54 Total 4 star reviews: 4 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Reviews Summary
Customers say this electrical supply service delivers breakers with exceptional speed and reliability. Many reviews mention the straightforward ordering process through an easy-to-navigate website. Frequent comments address competitive pricing and accurate product delivery. The selection of breakers receives consistent praise, with users noting the products match specifications precisely. Reviews highlight the availability of inventory and prompt shipping, often exceeding delivery expectations.
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58 reviews
  • RG
    Ron G.
    Verified Buyer
    Reviewing
    Siemens BQD320 - 20A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/2/26
    Breakers

    Order was shipped and on time. The ordering process was easy and the service was great.

    Was this helpful?
  • GN
    Greg N.
    Verified Buyer
    Reviewing
    Siemens BQD340 - 40A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/26/26
    Excellent Customer Service

    Easy ordering & Drew Wilson helped me with this order. I will definitely be using you again in the near future especially with his excellent service he provided.

    Was this helpful?
  • RR
    Robert R.
    Verified Buyer
    Reviewing
    Siemens BQD360 - 60A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/23/26
    As described

    Quality product from a quality company.

    Was this helpful?
  • BV
    Brian V.
    Verified Buyer
    Reviewing
    Siemens BQD380 - 80A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    4/27/26
    Siemens BQD380 - 80A 3 Pole Molded Case Circuit Breaker

    just what I needed good deal

    Was this helpful?
  • MP
    Mario P.
    Verified Buyer
    Reviewing
    Siemens BQD3100 - 100A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    4/16/26
    Excellent Price - Quick shipment

    Super breakers had the part I needed on hand and at the right price. Customer service was excellent, and shipping was quick.

    Was this helpful?

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