Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Siemens HQR23B125L Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Siemens
HQR23B125L
Molded Case Circuit Breaker
Brand
Siemens
SKU
HQR23B125L
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens HQR23B125L - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
200A 3 Pole Molded Case Circuit Breaker
125A 3 Pole Molded Case Circuit Breaker
125A 3 Pole Molded Case Circuit Breaker
Description
The HQR23B125L is a 3-pole, 125-amp molded case circuit breaker from Siemens' SENTRON family. Built for commercial and industrial applications, it features a thermal magnetic trip unit with fixed long-time and instantaneous (LI) protection functions. This unit mount breaker includes factory-installed line and load side lugs for easy feed-thru connection. Rated at 65kAIC at 240VAC, it serves as a direct replacement for legacy QJ frame breakers in Siemens P1, P2, and P3 panelboards.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HQR23B125L |
| Series | HQR |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC |
| Frame Type | HQR |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Enclosures, P1, P2, P3 Panelboards (Main/Subfeed) |
| Wire Gauge | 3 AWG - 300 kcmil (Al/Cu) |
| Max Wire | 300 kcmil |
| Min Wire | 3 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Line and Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Push-to-Trip Button, High Interrupting Capacity, Non-Interchangeable Trip |
Product FAQs
6 answersWhich Siemens panelboards are compatible with the HQR23B125L?
This breaker is designed for use in Siemens P1, P2, and P3 panelboards. It can be applied as either a main or subfeed breaker depending on the panel configuration.
What is the difference between the QR23B125L and the HQR23B125L?
The HQR23B125L is the high-interrupting version of the standard QR23B125L. While the standard QR frame is rated for 10kAIC at 240V, the HQR frame provides a 65kAIC rating for systems with higher available fault current.
Can the HQR23B125L replace older QJ frame breakers?
Yes, the QR frame series is the direct replacement for legacy Siemens QJ frame breakers. The HQR23B125L will fit in the same unit mount spaces in P1, P2, and P3 panelboards.
Does the HQR23B125L come with line and load lugs?
Yes, the L suffix in the catalog number indicates that factory-installed lugs are included. These terminals accept 3 AWG through 300 kcmil aluminum or copper wire.
How is the HQR23B125L installed in a panelboard?
This is a unit mount, bolt-on circuit breaker. It secures directly to the panelboard bus using bolted connections, providing a stable and reliable contact for commercial and industrial applications.
What protection functions are provided by the LI trip unit?
The thermal magnetic trip unit includes fixed long-time (L) protection for overload conditions and instantaneous (I) protection for short circuits.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
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.
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.