Cummins OTEC 125 Amp NSE 480V 3ph Automatic Transfer Switches - A075F126 | Portlandia Electric Supply
Cummins OTEC 125 Amp NSE 480V 3ph Automatic Transfer Switches - A075F126 | Portlandia Electric Supply
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Cummins OTEC 125 Amp NSE 480V 3ph Automatic Transfer Switches - A075F126

Cummins OTEC 125 Amp NSE 480V 3ph Automatic Transfer Switches - A075F126

$3,803.80 USD
$ $3,803.80 USD
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Unlimited lifetime support, always available.

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What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

Cummins OTEC 125 Amp NSE 480V 3-Phase Automatic Transfer Switch

A075F126 | Microprocessor Control | 4-Pole Switched Neutral | Indoor NEMA 1 | 480V System Voltage

125 Amps
Max Current Capacity
480V
System Voltage
Open Transition
Transfer Type

Product Overview

The Cummins OTEC 125 Amp NSE (Non-Service Entrance) 480V 3-phase Automatic Transfer Switch (ATS) is engineered for demanding commercial and industrial backup power needs. This robust unit ensures seamless power transfer between utility lines and generator sets during unexpected outages. Its 125 Amp capacity supports critical systems in high-demand environments without interruption. The 480V 3-phase configuration enables balanced energy distribution across complex electrical loads. Businesses rely on this switch for reliable operation in emergency, legally required, or optional standby applications. The NSE rating allows flexible installation configurations that do not require service entrance certification. PowerCommand 40 microprocessor control provides precise monitoring and automated response to power fluctuations. Heavy-duty silver alloy contacts ensure long-term durability in harsh operating conditions. UL 1008 listing and NEC compliance guarantee safety standards are met for professional installations.

Key Benefits

Seamless Power Transfer: Automatic switching between utility and generator power ensures uninterrupted service for critical systems during outages.

High Capacity Support: The 125 Amp rating handles substantial commercial and industrial loads efficiently without performance degradation.

Balanced Distribution: 480V 3-phase design optimizes load balancing for stable power delivery across three-phase installations.

Flexible Installation: Non-Service Entrance rating allows versatile mounting options in various commercial and industrial facility layouts.

Safety Compliance: UL 1008 listed and NEC compliant design meets rigorous safety standards for reliable long-term operation.

How It Works

This Automatic Transfer Switch continuously monitors both utility power and generator output to detect any power quality issues. When a utility outage occurs, the microprocessor controller signals the generator to start automatically. The system then waits for the generator to reach stable voltage and frequency before initiating the transfer sequence. Once stable backup power is confirmed, the switch opens the utility connection and closes the generator connection in an open transition mode. This break-before-make process prevents dangerous backfeeding or power surges. After utility power returns and stabilizes, the switch automatically retransfers the load back to the primary source. The controller then allows the generator to run through a cooling cycle before shutting down. This entire process happens without human intervention, ensuring critical loads remain powered seamlessly.

Power Monitoring: The PowerCommand 40 microprocessor constantly evaluates voltage, frequency, and phase rotation on both power sources.

Generator Start Signal: Upon detecting utility failure, the controller sends an automatic start signal to the connected Cummins backup generator.

Open Transition Transfer: The breaker opens the utility connection before closing the generator connection, preventing simultaneous power source contact.

Technical Specifications

Model Number A075F126
Vendor Cummins
Amperage Rating 125 Amps
Voltage Rating 480V
Phase Type 3-Phase, 60 Hz
Pole Configuration 4-Pole (Switched Neutral)
Transfer Type Open Transition (Break-Before-Make)
Service Rating Non-Service Entrance (NSE)
Enclosure Type NEMA 1 (Indoor)
Controller PowerCommand 40-11 Microprocessor with LCD Display
Contact Material Heavy-Duty Silver Alloy with Multi-Leaf Arc Chutes
Compatibility Cummins Backup Generators

Certifications & Compliance

Certifications: UL 1008 (Transfer Switch Equipment), CSA Standards, NEMA 1 Rated
Inverter Compatibility: Designed for Cummins Backup Generators with PowerCommand Integration
Environmental: Compliant with National Electrical Code (NEC) and National Fire Protection Association (NFPA) Standards
Warranty: Covered by Cummins Standard Warranty for Long-Term Reliability and Support

Documentation

S-1639 OTEC SPEC C

● Available | Contact us for lead time and pricing

Customer Reviews

Be the first to write a review
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What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

Cummins OTEC 125 Amp NSE 480V 3-Phase Automatic Transfer Switch

A075F126 | Microprocessor Control | 4-Pole Switched Neutral | Indoor NEMA 1 | 480V System Voltage

125 Amps
Max Current Capacity
480V
System Voltage
Open Transition
Transfer Type

Product Overview

The Cummins OTEC 125 Amp NSE (Non-Service Entrance) 480V 3-phase Automatic Transfer Switch (ATS) is engineered for demanding commercial and industrial backup power needs. This robust unit ensures seamless power transfer between utility lines and generator sets during unexpected outages. Its 125 Amp capacity supports critical systems in high-demand environments without interruption. The 480V 3-phase configuration enables balanced energy distribution across complex electrical loads. Businesses rely on this switch for reliable operation in emergency, legally required, or optional standby applications. The NSE rating allows flexible installation configurations that do not require service entrance certification. PowerCommand 40 microprocessor control provides precise monitoring and automated response to power fluctuations. Heavy-duty silver alloy contacts ensure long-term durability in harsh operating conditions. UL 1008 listing and NEC compliance guarantee safety standards are met for professional installations.

Key Benefits

Seamless Power Transfer: Automatic switching between utility and generator power ensures uninterrupted service for critical systems during outages.

High Capacity Support: The 125 Amp rating handles substantial commercial and industrial loads efficiently without performance degradation.

Balanced Distribution: 480V 3-phase design optimizes load balancing for stable power delivery across three-phase installations.

Flexible Installation: Non-Service Entrance rating allows versatile mounting options in various commercial and industrial facility layouts.

Safety Compliance: UL 1008 listed and NEC compliant design meets rigorous safety standards for reliable long-term operation.

How It Works

This Automatic Transfer Switch continuously monitors both utility power and generator output to detect any power quality issues. When a utility outage occurs, the microprocessor controller signals the generator to start automatically. The system then waits for the generator to reach stable voltage and frequency before initiating the transfer sequence. Once stable backup power is confirmed, the switch opens the utility connection and closes the generator connection in an open transition mode. This break-before-make process prevents dangerous backfeeding or power surges. After utility power returns and stabilizes, the switch automatically retransfers the load back to the primary source. The controller then allows the generator to run through a cooling cycle before shutting down. This entire process happens without human intervention, ensuring critical loads remain powered seamlessly.

Power Monitoring: The PowerCommand 40 microprocessor constantly evaluates voltage, frequency, and phase rotation on both power sources.

Generator Start Signal: Upon detecting utility failure, the controller sends an automatic start signal to the connected Cummins backup generator.

Open Transition Transfer: The breaker opens the utility connection before closing the generator connection, preventing simultaneous power source contact.

Technical Specifications

Model Number A075F126
Vendor Cummins
Amperage Rating 125 Amps
Voltage Rating 480V
Phase Type 3-Phase, 60 Hz
Pole Configuration 4-Pole (Switched Neutral)
Transfer Type Open Transition (Break-Before-Make)
Service Rating Non-Service Entrance (NSE)
Enclosure Type NEMA 1 (Indoor)
Controller PowerCommand 40-11 Microprocessor with LCD Display
Contact Material Heavy-Duty Silver Alloy with Multi-Leaf Arc Chutes
Compatibility Cummins Backup Generators

Certifications & Compliance

Certifications: UL 1008 (Transfer Switch Equipment), CSA Standards, NEMA 1 Rated
Inverter Compatibility: Designed for Cummins Backup Generators with PowerCommand Integration
Environmental: Compliant with National Electrical Code (NEC) and National Fire Protection Association (NFPA) Standards
Warranty: Covered by Cummins Standard Warranty for Long-Term Reliability and Support

Documentation

S-1639 OTEC SPEC C

● Available | Contact us for lead time and pricing
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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

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Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

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