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Cummins OTEC 225 Amp SE 240V 1ph Automatic Transfer Switches - A075N276

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SKU PES-PA-ELC-1479

Cummins OTEC 225 Amp SE 240V 1ph Automatic Transfer Switches - A075N276

$9,046.41 USD

$ $9,046.41 USD

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In Stock

Get yours today!

9+ sold

In the last 7 days

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Delivery timeframe shown above at checkout

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Cummins OTEC 225 Amp SE 240V 1-Phase Automatic Transfer Switch

A075N276 | Open Transition | 225 Amps | Service Entrance | 240V System Voltage

225 Amps

Max Current Capacity

240V

Operating Voltage

SE Rated

Service Entrance

Product Overview

The Cummins OTEC 225 Amp SE 240V 1-phase Automatic Transfer Switch (ATS) delivers reliable backup power for large homes and businesses. This robust unit ensures uninterrupted energy flow during grid failures or utility disruptions. With a high 225 Amp capacity, it supports heavy electrical loads without performance degradation. The Service Entrance (SE) rating simplifies installation by combining utility and load switching in one device. This design meets strict electrical safety standards for service entrance applications. It seamlessly transfers power from utility lines to backup generators automatically. Critical systems remain operational even when the main grid fails unexpectedly. The single-phase configuration ensures efficient power distribution for standard residential and light commercial setups.

Key Benefits

High Capacity Power: The 225 Amp rating supports high-demand residential and commercial electrical loads effectively.

Seamless Transfer: Automatic functionality ensures power switches instantly during outages to prevent system downtime.

Service Entrance Ready: SE-rated design combines utility and load switching, simplifying complex electrical installations.

Safety Certified: UL 1008 listed and NEC compliant for guaranteed safety and regulatory compliance.

Generator Integration: Designed for easy integration with Cummins backup generator systems for optimal performance.

How It Works

This automatic transfer switch continuously monitors both utility power and generator output sources. When the utility grid fails, the controller signals the generator to start immediately. Once the generator reaches stable voltage, the switch transfers the electrical load to it. This process happens automatically without any manual intervention from the user. The system ensures critical circuits receive power within seconds of a grid outage. When utility power returns and stabilizes, the switch automatically retransfers the load back. The generator then shuts down after a cool-down period to conserve fuel and extend life.

Grid Failure Detection: The microprocessor controller senses voltage drops or phase loss on the utility line instantly.

Generator Startup Signal: Upon detecting a failure, the ATS sends a start signal to the connected backup generator.

Load Transfer Logic: Once generator voltage is stable, the switch opens the utility contact and closes the generator contact.

Technical Specifications

MPN	A075N276
Vendor	Cummins
Amperage	225 Amps
Voltage	240V
Phase Type	1-Phase
Transfer Type	Automatic
Service Rating	Service Entrance (SE)
Compatibility	Cummins Backup Generators
Enclosure Type	NEMA 3R (Indoor/Outdoor)
Controller	PowerCommand 40 with LCD
Transfer Time	Max 6 Cycles at 60Hz
Transition Mode	Open Transition

Certifications & Compliance

Certifications: UL 1008 Listed, CSA C22.2 No. 178 Compliant, NEC Compliant
Inverter Compatibility: Designed for Cummins Backup Generator Systems
Environmental: NEMA 3R Rated for Indoor and Outdoor Installation
Warranty: Covered by Cummins Standard Warranty for Long-Term Support

Documentation

S-1639 OTEC SPEC C (PDF)

● 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 SE 240V 1-Phase Automatic Transfer Switch

A075N276 | Open Transition | 225 Amps | Service Entrance | 240V System Voltage

225 Amps

Max Current Capacity

240V

Operating Voltage

SE Rated

Service Entrance

Product Overview

Key Benefits

High Capacity Power: The 225 Amp rating supports high-demand residential and commercial electrical loads effectively.

Seamless Transfer: Automatic functionality ensures power switches instantly during outages to prevent system downtime.

Service Entrance Ready: SE-rated design combines utility and load switching, simplifying complex electrical installations.

Safety Certified: UL 1008 listed and NEC compliant for guaranteed safety and regulatory compliance.

Generator Integration: Designed for easy integration with Cummins backup generator systems for optimal performance.

How It Works

Grid Failure Detection: The microprocessor controller senses voltage drops or phase loss on the utility line instantly.

Generator Startup Signal: Upon detecting a failure, the ATS sends a start signal to the connected backup generator.

Load Transfer Logic: Once generator voltage is stable, the switch opens the utility contact and closes the generator contact.

Technical Specifications

MPN	A075N276
Vendor	Cummins
Amperage	225 Amps
Voltage	240V
Phase Type	1-Phase
Transfer Type	Automatic
Service Rating	Service Entrance (SE)
Compatibility	Cummins Backup Generators
Enclosure Type	NEMA 3R (Indoor/Outdoor)
Controller	PowerCommand 40 with LCD
Transfer Time	Max 6 Cycles at 60Hz
Transition Mode	Open Transition

Certifications & Compliance

Documentation

S-1639 OTEC SPEC C (PDF)

● Available | Contact us for lead time and pricing

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