- Home Page /
- Tools & Home Improvement /
- Electrical /
- Breakers, Load Centers & Fuses /
- Circuit Breakers /
- Thermal-Magnetic Circuit Breakers /
- Siemens MBK125A 125-Amp Main Circuit Breaker ...
0 ratings
Item #:
7538258
Siemens MBK125A 125-Amp Main Circuit Breaker for Use in Ultimate Type Load Centers
87% of respondents would recommend this to a friend
Item #:
7538258
NZD 152
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
Afterpay Information
Split your bill into 4 payments of NZD 38 interest-free
Add the item to your cart
Select Afterpay at checkout
Fill in your details
Complete your first payment
and pay the remaining in easy instalments or according to the payment plan you selected
Here’s why you should Afterpay it
Get everything you need now..
Shop thousands of brands and millions of products, online and in-store.
Pay over six weeks.
Make the first payment upfront and the rest over time. Always interest-free when you pay it in 4.
No fees when you pay on time.
We’ll send you reminders and cap late payments to help you get back on track.
(1) Terms and conditions. apply. (2) Installment Agreement. (3) Eligible for customers in. New Zealand, (4) Your final payment plan may vary depending on your credit history.
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Only 2 items left in stock.
Order now and get it around Tuesday, September 15
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
SIEMENS main breaker kits are used to convert the Ultimate type of main lug load centers to main breaker load centers, or can be used as a replacement main breaker in main breaker type Ultimate load centers.
Buy Now Pay Later
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High Capacity
The Siemens MBK125A provides a robust 125-amp rating, ensuring reliable power distribution for demanding electrical loads in residential or commercial applications.
Ultimate Compatibility
Designed specifically for Ultimate Type Load Centers, this circuit breaker guarantees seamless integration, enhancing overall system efficiency and safety in your electrical setup.
Enhanced Safety
Equipped with advanced safety features, the Siemens MBK125A protects your electrical system from overloads and faults, ensuring peace of mind while maintaining optimal performance.
Product Details
| Brand Name | Siemens Energy Automation Inc |
| Model | MBK125A |
| UPC | 783643388000 |
| Part Number | GID-156232 |
| Number of Items | 1 |
| Manufacturer | Siemens |
| Unit Count | 1 Count |
| Global Trade Identification Number | 00783643388000 |
| Item Weight | 12.8 ounces (362.88 grams) |
| Current Rating | 125 A |
| Circuit Breaker Type | Standard |
| Mounting Type | Bolt-On Mount |
| Number of Poles | 3 |
| Item Dimensions D x W x H | 5.5"D x 4.3"W x 3.5"H (14 x 10.9 x 8.9 cm) |
| Brand | Siemens Energy Automation Inc |
| Product Dimensions (L x W x H) | 5.5"D x 4.3"W x 3.5"H (14 x 10.9 x 8.9 cm) |
Who Should Buy?
-
Homeowners
Ideal for residential use, ensuring safety and reliability for households with moderate to high electrical demands.
-
Contractors
Useful for electricians who require a dependable main circuit breaker for new installations or upgrades in load centers.
-
DIY Enthusiasts
Great for individuals looking to enhance their home electrical systems with a quality circuit breaker for safety.
-
Low Power Needs
Not suitable for users with low electrical demands, as its capacity may exceed necessary requirements.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the Siemens MBK125A circuit breaker designed for?
Answer: The Siemens MBK125A is a 125-Amp main circuit breaker specifically designed for use in Ultimate Type Load Centers. It serves as a critical component that protects your electrical circuit by interrupting the flow of electricity in case of overloads or short circuits. This ensures safety for both the electrical system and any connected appliances. Such circuit breakers are essential in residential and commercial settings where high power demand is common. -
Question:
How does the Siemens MBK125A ensure safety in electrical systems?
Answer: The Siemens MBK125A is engineered to trip under overload conditions, thus protecting your home or office wiring from damage. This protection is especially vital in high-load scenarios, where failing to trip could lead to overheating and potential fire hazards. By using this breaker, you enhance your electrical system's safety, ensuring that your appliances and devices receive stable power without risk of damage from electrical surges. -
Question:
Can the Siemens MBK125A be used in any electrical panel?
Answer: The Siemens MBK125A is specifically designed for Ultimate Type Load Centers, meaning it fits seamlessly in these panels. It is crucial to use circuit breakers that are compatible with your specific load center model for optimal functionality. Using the wrong type could lead to inadequate protection or malfunction, so always check compatibility before installation. -
Question:
What applications is the Siemens MBK125A suitable for?
Answer: This circuit breaker is suited for a range of applications, from residential homes to light commercial settings. It serves well in environments where significant electrical loads are expected, like in basements, garages, or workshops. The reliability of the MBK125A makes it ideal for powering essential equipment while safeguarding against electrical faults. -
Question:
What is the installation process for the Siemens MBK125A?
Answer: Installing the Siemens MBK125A involves securely connecting it to your Ultimate Type Load Center, ensuring all wire connections adhere to local electrical codes. It's advisable to have a qualified electrician perform the installation to guarantee safety and proper functionality. Once installed, the breaker will act immediately to protect your circuit in case of electrical issues. -
Question:
Does the MBK125A feature any technology for enhanced protection?
Answer: Yes, the Siemens MBK125A incorporates advanced design features that improve its performance, including thermal magnetic tripping technology. This mechanism allows for accurate and timely interruption of the circuit during overloads or short circuits. The technology ensures that your devices are well-protected and can help in minimizing potential damage from electrical faults. -
Question:
What are the benefits of using Siemens products like the MBK125A?
Answer: Using Siemens products like the MBK125A means investing in quality and reliability. Siemens is recognized for its durable and high-performance electrical components. By integrating a Siemens circuit breaker into your system, you are ensuring longevity, improved electrical safety, and minimizing the risk of nuisance tripping, which can disrupt daily activities. -
Question:
Is the Siemens MBK125A suitable for homes with high electrical needs?
Answer: Absolutely! The Siemens MBK125A is designed for high electrical loads, making it ideal for homes with multiple appliances or high-demand electrical systems. If your home includes a central heating system, an electric vehicle charger, or other high-wattage devices, this breaker will efficiently handle the load while maintaining safety. Its capacity ensures that your home can function smoothly without electrical interruptions. -
Question:
What should I do if the Siemens MBK125A trips frequently?
Answer: Frequent tripping of the Siemens MBK125A can indicate underlying issues in your electrical system, such as overloaded circuits or malfunctioning devices. It’s important to identify the cause rather than simply resetting the breaker. Consulting with a qualified electrician will help diagnose the problem, ensuring your system operates safely and effectively without risking damage. -
Question:
Where can I buy the Siemens MBK125A in New Zealand?
Answer: You can purchase the Siemens MBK125A 125-Amp Main Circuit Breaker from Ubuy in New Zealand. Ubuy offers a convenient platform for getting this essential component, ensuring you have access to quality products for your electrical needs. With a selection of Siemens circuit breakers and related electrical components, Ubuy stands out as a reliable choice.
Siemens Energy Automation Inc Thermal-Magnetic Circuit Breakers Editorial Review
The Siemens MBK125A 125-Amp Main Circuit Breaker has generally received positive feedback from customers, highlighting its effectiveness and ease of installation. Users are satisfied with the product's performance, particularly in situations where a quick and efficient replacement was necessary, as evidenced by one reviewer who needed the component urgently for a client’s panel. The breaker is noted for its compatibility with specific Siemens load centers, such as the 125 amp Main Lug PL Series, and customers appreciated how seamlessly it integrated into their systems. While the installation process is often described as straightforward, there is a minor critique regarding the type of screws used for the lugs. Some users expressed a preference for hex bolts over slotted screwdrivers, indicating a small area for improvement in design. Nevertheless, the overall sentiment reflects that the Siemens MBK125A is a reliable choice for both professional electricians and DIY enthusiasts when upgrading or repairing electrical panels. **
Customer Reviews & Ratings
88 customers ratings
-
5 Star
81%
-
4 Star
13%
-
3 Star
3%
-
2 Star
0%
-
1 Star
3%
Review this product
Share your thoughts with other customers
Pros
- Quick and easy installation
- Compatible with Siemens load centers (e.g., 125 amp Main Lug PL Series)
- Effective replacement for faulty breakers
- Positive customer satisfaction regarding performance
Cons
- Lugs require a slotted screwdriver rather than hex bolts, which some may find less convenient
Platform Trust & Buyer Confidence
RA
Ranee
Verified buyer
“Paint ordered from USA, u buy got the product to me in New Zealand in approx a week”
22 July 2026 · via Trustpilot
NC
NordVPN
Verified buyer
“very speedy delivery,tracking info was superb-best experikence ever!!!”
24 June 2026 · via Trustpilot
NH
Nicholas
Verified buyer
“Love what I received and ordered found that usa clothes are more better quality and look better than the same clothes in my country but are harder to find here recommend ubuy 100%”
22 June 2026 · via Trustpilot
D
Dneah
Verified buyer
“Product came earlier than expected (shipped from US to NZ), in about 3 weeks. No damages and product was exactly as advertised!”
15-Jul-26 · via Trustpilot
TS
Tania
Verified buyer
“Easy to order, easy to track and the product is great to use. Also, the person-to-person (not automated) phone call I got to confirm that I'd received the item was wonderful ??”
11-Jul-26 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
NZD 152
Order now and get it around Tuesday, September 15
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Only 2 items left in stock.
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Converts main lug load centers to main breaker load centers.
- Compatible with 125-Amp Ultimate type load centers.
- Includes a dependable bolt-on type breaker.
- UL listed for safety and reliability.
- Ideal for both new installations and replacements.
- Ensures warranty protection by avoiding used breakers.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.