What does the Cummins OTEC 225 Amp Transfer Switch do?

The Cummins OTEC 225 Amp Transfer Switch automatically shifts power between the utility source and a compatible generator during outages, ensuring stable, uninterrupted power for commercial and institutional systems.

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Cummins OTEC 225 Amp NSE 208V 3ph Automatic Transfer Switches - A075F136

Cummins OTEC 225 Amp NSE 208V 3ph Automatic Transfer Switches - A075F136

Cummins OTEC 225 Amp 3PH Automatic Transfer Switch

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Cummins OTEC 225 Amp NSE 208V 3ph Automatic Transfer Switches - A075F136

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SKU PES-PA-ELC-1476

OEM Authorized Dealer BABA Compliant Full OEM Warranty 7-10 Business Day Delivery

$4,611.23 USD

$ $4,611.23 USD

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In Stock

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9+ sold

In the last 7 days

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Cummins OTEC 225 Amp NSE 208V 3ph Automatic Transfer Switches - A075F136 $4,611.23

Specifications

Voltage 208V

Amperage 225A

Product Category Transfer Switch

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 225 Amp NSE 208V 3-Phase Automatic Transfer Switch

A075F136 | Microprocessor Control | 3-Pole | NSE | 208V System Voltage

225A

Rated Amperage

208V

Voltage Rating

3Ph

Three Phase

Product Overview

The Cummins OTEC 225 Amp Automatic Transfer Switch (ATS) is engineered for dependable performance in commercial standby systems. This genuine OEM solution ensures seamless power transfer between utility and generator sources during outages. Designed for 208V three-phase operation, the Non-Service Entrance (NSE) configuration offers versatile installation options. The rugged heavy-duty contactor provides long electrical and mechanical life for mission-critical applications. A microprocessor-based controller guarantees accurate timing and precise load management. This switch is ideal for small to mid-sized facilities requiring uninterrupted power reliability. It continuously monitors voltage and frequency to trigger automatic generator startup. The corrosion-resistant steel enclosure suits indoor or sheltered outdoor environments perfectly. Superior electrical performance defines the OTEC series for robust power systems.

Key Benefits

Seamless Power Transfer: Automatic and fast switching ensures minimal downtime between utility and generator power sources.

Precision Control: Microprocessor-based controller delivers accurate timing and intelligent load management capabilities.

Heavy-Duty Durability: Rugged contactor design ensures extended electrical and mechanical life for rigorous use.

Versatile Installation: Non-Service Entrance (NSE) configuration allows flexible integration into various commercial setups.

OEM Compatibility: Designed specifically for compatibility with Cummins commercial and industrial generator units.

How It Works

The Cummins OTEC 225 Amp Automatic Transfer Switch continuously monitors utility voltage and frequency parameters. When an outage occurs, the system signals the generator to start immediately. It then automatically transfers the electrical load to the generator power source safely. This process ensures uninterrupted power for critical systems with minimal maintenance requirements. Once utility power stabilizes, the switch returns the load to the grid automatically. The microprocessor controller manages these transitions with superior precision and timing accuracy. This break-before-make action prevents source-to-source connections effectively.

Voltage Monitoring: The controller constantly checks voltage levels and frequency to detect power anomalies instantly. It triggers the transfer sequence only when specific outage thresholds are met for safety.

Generator Startup Signal: Upon detecting a loss of utility power, the switch sends a signal to start the generator. This ensures the backup source is ready before the load transfer occurs.

Automatic Load Transfer: The heavy-duty contactor physically moves to connect the load to the generator source. This mechanical and electrical interlocking design prevents dangerous source-to-source connections.

Return to Normal: When utility power stabilizes, the system waits for a preset duration before switching back. This prevents rapid cycling during temporary voltage fluctuations or momentary dips.

Technical Specifications

Part Number (MPN)	A075F136
Manufacturer	Cummins
Product Type	Automatic Transfer Switch (NSE)
Rated Amperage	225A
Voltage Rating	208V AC
Electrical Phase	Three Phase (3Ph)
Frequency	60 Hz
Enclosure Type	Non-Service Entrance (NSE)
Enclosure Material	Corrosion-Resistant Steel
Control Type	Microprocessor-Based Power Transfer Controller
Installation Requirement	Field-installable by certified Cummins technician or licensed electrician
Suitable Environment	Indoor or sheltered outdoor
Contact Material	Heavy-duty silver alloy
Poles	3-Pole

Certifications & Compliance

Certifications: UL 1008 Listed for automatic transfer switches
Inverter Compatibility: Approved for use with Cummins OTEC-series commercial and standby generators
Environmental: Complies with NEC, IEEE, and CSA electrical installation standards
Warranty: Genuine Cummins OEM component covered under standard accessory warranty

Documentation

S-1639 OTEC SPEC C 4

● Available | Contact us for lead time and pricing

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

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?

Cummins OTEC 225 Amp NSE 208V 3-Phase Automatic Transfer Switch

A075F136 | Microprocessor Control | 3-Pole | NSE | 208V System Voltage

225A

Rated Amperage

208V

Voltage Rating

3Ph

Three Phase

Product Overview

Key Benefits

Seamless Power Transfer: Automatic and fast switching ensures minimal downtime between utility and generator power sources.

Precision Control: Microprocessor-based controller delivers accurate timing and intelligent load management capabilities.

Heavy-Duty Durability: Rugged contactor design ensures extended electrical and mechanical life for rigorous use.

Versatile Installation: Non-Service Entrance (NSE) configuration allows flexible integration into various commercial setups.

OEM Compatibility: Designed specifically for compatibility with Cummins commercial and industrial generator units.

How It Works

Generator Startup Signal: Upon detecting a loss of utility power, the switch sends a signal to start the generator. This ensures the backup source is ready before the load transfer occurs.

Return to Normal: When utility power stabilizes, the system waits for a preset duration before switching back. This prevents rapid cycling during temporary voltage fluctuations or momentary dips.

Technical Specifications

Part Number (MPN)	A075F136
Manufacturer	Cummins
Product Type	Automatic Transfer Switch (NSE)
Rated Amperage	225A
Voltage Rating	208V AC
Electrical Phase	Three Phase (3Ph)
Frequency	60 Hz
Enclosure Type	Non-Service Entrance (NSE)
Enclosure Material	Corrosion-Resistant Steel
Control Type	Microprocessor-Based Power Transfer Controller
Installation Requirement	Field-installable by certified Cummins technician or licensed electrician
Suitable Environment	Indoor or sheltered outdoor
Contact Material	Heavy-duty silver alloy
Poles	3-Pole

Certifications & Compliance

Documentation

S-1639 OTEC SPEC C 4

● Available | Contact us for lead time and pricing

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