Skip to main content
Expedited shipping available at checkout

Siemens QJH23B100 Molded Case Circuit Breaker

  • 100A
  • 3 Pole
  • Bolt-On
Siemens QJH23B100
Molded Case Circuit Breaker
Brand Siemens
SKU QJH23B100
Select Item Condition
Earn 1403 SuperPoints
  • 100A
  • 3 Pole
  • Bolt-On

Quantity

Bulk Pricing
Send your parts list for a volume quote.
Siemens QJH23B100 - 100A 3 Pole Molded Case Circuit Breaker

Siemens QJH23B100 - 100A 3 Pole Molded Case Circuit Breaker

New

$1,403.60 Check Stock

Quantity

Similar Items

Description

Engineered for commercial distribution, the Siemens QJH23B100 delivers reliable thermal-magnetic protection in a 3-pole, 100A molded case package. This bolt-on MCCB installs into Siemens P1 through P5 panelboards and switchboards. As a legacy QJ frame device, it is often replaced by the newer QRH23B100, which requires a QR strap kit for retrofitting into existing enclosures. It features a 22kAIC interrupting rating at 240VAC, non-interchangeable trip, and a trip-free mechanism.

Specifications

Key specifications
Brand Siemens
Part Number QJH23B100
Series QJH
Amperage 100A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC
Phase 3
AIC Rating 22kA @ 240VAC
Fit and installation
Frame Type QJ
Terminal Type Lugs
For Use With Siemens P1, P2, P3, P4, P5 Panelboards, Switchboards, Meter Centers
Wire Gauge 6 AWG - 300 kcmil (Cu), 4 AWG - 300 kcmil (Al)
Max Wire 300 kcmil
Min Wire 6 AWG (Cu) / 4 AWG (Al)
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, Alarm Switch, Padlock Attachment
Accessories Load Side Lugs Included (TA1Q300)
Standards CSA C22.2 No. 5, HACR Rated, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, High Interrupting Capacity, Reverse Feed, Non-Interchangeable Trip, Trip-Free Mechanism

Product FAQs

6 answers
What types of enclosures or panels is the Siemens QJH23B100 compatible with?

This bolt-on molded case circuit breaker is designed for installation in Siemens P1, P2, P3, P4, and P5 panelboards, as well as compatible switchboards and meter centers.

What wire sizes and materials are accepted by the lugs on this breaker?

The included lugs accept copper wire ranging from 6 AWG to 300 kcmil, and aluminum wire ranging from 4 AWG to 300 kcmil.

Is the QJH23B100 a current or legacy frame?

The QJH23B100 is a legacy QJ frame device. It is often replaced by the newer QRH23B100, though retrofitting the newer QR frame into existing enclosures may require a specific QR strap kit.

What does the 'H' in the QJH series designation indicate?

The 'H' indicates a higher interrupting rating. While the standard QJ23B100 breaker has a 10kAIC rating, the QJH23B100 features an upgraded 22kAIC rating at 240VAC.

Are the trip settings on the QJH23B100 adjustable?

No, this breaker features a fixed thermal and fixed magnetic trip unit, meaning the long-time and instantaneous trip functions cannot be adjusted in the field.

Does this breaker include ground fault or equipment protection?

No, the QJH23B100 is a standard thermal-magnetic breaker with long-time and instantaneous trip functions. It does not provide ground fault or equipment protection features.

SuperClub

Join free. Get 500 SuperPoints.

Earn points on eligible purchases and redeem them at checkout.

100 SuperPoints = $1 off.

Warranties

60-Day Warranty

Your purchase includes 60 days of SuperBreakers warranty coverage.

Get a Quote

Don’t see what you’re looking for?

We source obsolete and hard-to-find parts every day.

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.

Read our full shipping policy

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.

Expedited Shipments

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.

Reviews

5.0
Rated 5.0 out of 5 stars
Based on 4 reviews
Total 5 star reviews: 4 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
4 reviews
  • JK
    Jeannine K.
    Verified Buyer
    Reviewing
    Siemens QJH23B060 - 60A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/14/26
    Siemens Breaker

    Breaker was a new surplus as described. Fast shipping & handling

  • BL
    Bob L.
    Verified Buyer
    Reviewing
    Siemens QJH23B100 - 100A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/15/26
    Exactly what I needed / Great service

    Excellent experience purchasing the Siemens QJH23B100. The breaker was well-packaged, priced competitively, and arrived right on schedule. It's already installed and operating perfectly. Five stars for both the product and SuperBreakers.

  • WE
    Warren E.
    Flag of United States
    Reviewing
    Siemens QJH23B225 - 225A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    2/17/20
    Great stock along with Great

    Great stock along with Great customer service.

  • ED
    Eddie D.
    Flag of United States
    Reviewing
    Siemens QJH23B060 - 60A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    11/27/17
    Fast delivery

    Great service fast delivery and received exact item for a great price.