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Cummins 1ph Automatic Transfer Switches
Cummins 1ph Automatic Transfer Switches
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Cummins OTEC 400 Amp NSE 240V 1ph Automatic Transfer Switches - A075F134

Cummins OTEC 400 Amp NSE 240V 1ph Automatic Transfer Switches - A075F134

$6,139.82 USD
$ $6,139.82 USD
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In Stock

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9+ sold

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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 400 Amp NSE 240V 1-Phase Automatic Transfer Switch

A075F134 | Microprocessor Control | 2-Pole NSE | Indoor/Protected Outdoor | 240V System Voltage

400A
Rated Amperage
240V
Voltage Rating
NSE
Non-Service Entrance

Product Overview

The Cummins OTEC 400 Amp NSE Automatic Transfer Switch is a premium OEM-grade solution for high-demand single-phase standby systems. This robust device ensures seamless power transfer between utility and generator sources during critical outages. It is engineered specifically for large residential estates, commercial facilities, and institutional applications requiring dependable backup power. The unit features a rugged, corrosion-resistant steel enclosure suitable for indoor or protected outdoor installation. Its advanced microprocessor-based controller delivers precise monitoring of voltage and frequency for reliable operation. This switch continuously safeguards your infrastructure by automatically switching to generator power when utility service fails. Once utility power stabilizes, the system safely returns the load to the primary source. The Non-Service Entrance (NSE) configuration allows for flexible installation within existing electrical setups. Ideal for agricultural setups and commercial properties needing consistent power management. The Cummins OTEC 400 Amp NSE Automatic Transfer Switch (ATS) provides superior control for 240V single-phase systems. It ensures uninterrupted energy flow for critical operations. High electrical loads are handled with precision thanks to heavy-duty contactor mechanisms. This genuine Cummins component guarantees long-term performance and code-compliant safety standards.

Key Benefits

High Capacity Rating: Rated for 400 amps at 240V single-phase to handle demanding electrical loads effectively.

Seamless Power Transfer: Automatically switches load between utility and generator during outages without manual intervention.

Flexible Installation: Non-Service Entrance (NSE) design allows integration into various existing electrical configurations easily.

Precise Control System: Advanced microprocessor-based controller ensures accurate monitoring and reliable automatic operation.

Durability and Protection: Heavy-duty contacts and corrosion-resistant steel enclosure ensure long mechanical and electrical life.

How It Works

The Cummins OTEC 400 Amp NSE Automatic Transfer Switch operates by continuously monitoring the utility power source for voltage and frequency stability. When the utility service is interrupted or drops below safe thresholds, the controller signals the generator set to start. Once the generator reaches the correct operating parameters, the switch automatically transfers the electrical load to the generator source. This process ensures that critical systems remain powered without interruption during utility failures. The system remains on generator power until the utility source stabilizes again. Once stability is confirmed, the switch safely transfers the load back to the utility source. This open transition mechanism prevents source-to-source connection, ensuring safety and code compliance. The entire process is managed by the integrated microprocessor for precise timing and reliable performance.

Utility Monitoring: The controller constantly checks utility voltage and frequency to detect any power interruptions or instability immediately.

Automatic Transfer: Upon detecting an outage, the bidirectional linear actuator moves the contacts to connect the load to the generator source smoothly.

Return to Utility: When utility power stabilizes, the switch reverts the load back to the primary source after a programmed delay period.

Technical Specifications

Part Number (MPN) A075F134
Manufacturer Cummins
Product Type Automatic Transfer Switch (NSE)
Rated Amperage 400A
Voltage 240V AC
Phase Single Phase (1Ph)
Enclosure Type Non-Service Entrance (NSE)
Control System Microprocessor-Based Power Transfer Controller
Poles 2-Pole
Frequency 50/60 Hz
Enclosure Rating NEMA Type 1 (Indoor)
Transition Type Open Transition
Installation Field-installable by certified technician
Weight 275 lb

Certifications & Compliance

Certifications: UL 1008 listed, NEMA ICS 10 compliant
Inverter Compatibility: Compatible with Cummins OTEC-series and Quiet Connect generators
Environmental: Complies with NEC, IEEE, and CSA safety and performance standards
Warranty: Genuine Cummins OEM component covered under standard accessory warranty

● Available | Contact us for lead time and pricing

Customer Reviews

Be the first to write a review
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(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

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 400 Amp NSE 240V 1-Phase Automatic Transfer Switch

A075F134 | Microprocessor Control | 2-Pole NSE | Indoor/Protected Outdoor | 240V System Voltage

400A
Rated Amperage
240V
Voltage Rating
NSE
Non-Service Entrance

Product Overview

The Cummins OTEC 400 Amp NSE Automatic Transfer Switch is a premium OEM-grade solution for high-demand single-phase standby systems. This robust device ensures seamless power transfer between utility and generator sources during critical outages. It is engineered specifically for large residential estates, commercial facilities, and institutional applications requiring dependable backup power. The unit features a rugged, corrosion-resistant steel enclosure suitable for indoor or protected outdoor installation. Its advanced microprocessor-based controller delivers precise monitoring of voltage and frequency for reliable operation. This switch continuously safeguards your infrastructure by automatically switching to generator power when utility service fails. Once utility power stabilizes, the system safely returns the load to the primary source. The Non-Service Entrance (NSE) configuration allows for flexible installation within existing electrical setups. Ideal for agricultural setups and commercial properties needing consistent power management. The Cummins OTEC 400 Amp NSE Automatic Transfer Switch (ATS) provides superior control for 240V single-phase systems. It ensures uninterrupted energy flow for critical operations. High electrical loads are handled with precision thanks to heavy-duty contactor mechanisms. This genuine Cummins component guarantees long-term performance and code-compliant safety standards.

Key Benefits

High Capacity Rating: Rated for 400 amps at 240V single-phase to handle demanding electrical loads effectively.

Seamless Power Transfer: Automatically switches load between utility and generator during outages without manual intervention.

Flexible Installation: Non-Service Entrance (NSE) design allows integration into various existing electrical configurations easily.

Precise Control System: Advanced microprocessor-based controller ensures accurate monitoring and reliable automatic operation.

Durability and Protection: Heavy-duty contacts and corrosion-resistant steel enclosure ensure long mechanical and electrical life.

How It Works

The Cummins OTEC 400 Amp NSE Automatic Transfer Switch operates by continuously monitoring the utility power source for voltage and frequency stability. When the utility service is interrupted or drops below safe thresholds, the controller signals the generator set to start. Once the generator reaches the correct operating parameters, the switch automatically transfers the electrical load to the generator source. This process ensures that critical systems remain powered without interruption during utility failures. The system remains on generator power until the utility source stabilizes again. Once stability is confirmed, the switch safely transfers the load back to the utility source. This open transition mechanism prevents source-to-source connection, ensuring safety and code compliance. The entire process is managed by the integrated microprocessor for precise timing and reliable performance.

Utility Monitoring: The controller constantly checks utility voltage and frequency to detect any power interruptions or instability immediately.

Automatic Transfer: Upon detecting an outage, the bidirectional linear actuator moves the contacts to connect the load to the generator source smoothly.

Return to Utility: When utility power stabilizes, the switch reverts the load back to the primary source after a programmed delay period.

Technical Specifications

Part Number (MPN) A075F134
Manufacturer Cummins
Product Type Automatic Transfer Switch (NSE)
Rated Amperage 400A
Voltage 240V AC
Phase Single Phase (1Ph)
Enclosure Type Non-Service Entrance (NSE)
Control System Microprocessor-Based Power Transfer Controller
Poles 2-Pole
Frequency 50/60 Hz
Enclosure Rating NEMA Type 1 (Indoor)
Transition Type Open Transition
Installation Field-installable by certified technician
Weight 275 lb

Certifications & Compliance

Certifications: UL 1008 listed, NEMA ICS 10 compliant
Inverter Compatibility: Compatible with Cummins OTEC-series and Quiet Connect generators
Environmental: Complies with NEC, IEEE, and CSA safety and performance standards
Warranty: Genuine Cummins OEM component covered under standard accessory warranty

● 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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