Built for demanding industrial environments, this 200A molded case circuit breaker delivers robust overcurrent protection. The integrated 120/240VAC shunt trip allows remote circuit opening. Designed with a bolt-on mounting style, it integrates into Siemens P1, P2, and P3 panelboards. This configuration is often replaced by the QR23B200, which requires a separate shunt trip. With a 10kAIC rating at 240VAC, it handles standard commercial loads.
Which Siemens enclosures and panelboards accept the QJ23B20000S01 breaker?
This bolt-on QJ-frame breaker mounts directly into Siemens P1, P2, and P3 panelboards. It is also compatible with Siemens switchboards and motor control centers designed for QJ or QR frame devices.
What is the current replacement for the QJ23B20000S01?
Siemens has transitioned from the QJ frame to the QR frame. The standard replacement is the QR23B200. Because the original S01 suffix denotes a factory-installed 120V AC shunt trip, you will need to add a field-installable shunt trip accessory to the QR breaker to maintain remote tripping capabilities.
What does the S01 suffix indicate on this breaker?
The S01 suffix denotes a factory-installed 120V AC shunt trip. This accessory allows the breaker to be opened remotely when a voltage signal is applied to the coil, which is commonly used for emergency stop systems or automated load shedding.
What are the lug wire size limits for the QJ23B20000S01?
The factory lugs accommodate 6 AWG to 300 kcmil for copper conductors and 4 AWG to 300 kcmil for aluminum conductors. Ensure proper torque specifications are followed during installation.
How is the QJ23B20000S01 secured inside the panelboard?
This is a bolt-on circuit breaker. It secures directly to the panelboard bus using bolted connections, providing a highly reliable and vibration-resistant mechanical and electrical joint compared to plug-in alternatives.
Does the QJ23B20000S01 offer adjustable trip settings?
No, this breaker uses a non-interchangeable, fixed thermal-magnetic trip unit. Both the long-time overload and instantaneous short-circuit pickup points are factory set and cannot be adjusted in the field.
Is the QJ23B20000S01 suitable for 480V or 600V applications?
No, this breaker is strictly rated for a maximum of 240V AC. Applying it to 480V or 600V systems violates its UL listing and exceeds its 10kA interrupting capacity.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 10 reviews.
Siemens QJ23B125 - 125A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/11/26
Breaker
Perfect
TN
Timothy N.
Verified Buyer
Reviewing
Siemens QJ23B200 - 200A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/27/26
10% off
Arrived on time, worked when turned on
WK
Willie K.
Verified Buyer
Reviewing
Siemens QJ23B150 - 150A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 4 out of 5 stars
7/22/26
Breaker
The Breaker arrive fast and in good condition however when I looked at the specs it was not the correct one.
PG
Phil G.
Verified Buyer
Reviewing
Siemens QJ23B200 - 200A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
3/3/26
Great Service
I was in a bind for this breaker that was for an elevator, and Nick got me all the components even though their blizzard! Will use them for all my specialty breakers.
VC
Vladimir C.
Verified Buyer
Reviewing
Siemens QJ22B200 - 200A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 4 out of 5 stars
12/10/25
4 start
The breaker was it perfect match.,but it was missing the two top bolts.