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Cummins RA400SE 400A Service Entrance Rated Automatic Transfer Switch
$3,343.63
Cummins

Cummins RA400SE 400A Service Entrance Rated Automatic Transfer Switch

SKU: A050W853
Cummins RA400SE 400A Service Entrance Rated Automatic Transfer Switch

400A service entrance rated ATS paired with the Cummins RS series generator. UL 1008 listed with UL 489 listed circuit breaker. Built as a matched set for faster, cleaner installation. Covers residential and light commercial standby applications. NEC and NFPA compliant.


Features & Benefits

Service Entrance Rated Listed for installation at the service entrance. Incorporates a UL 489 listed circuit breaker. No separate main disconnect required upstream — reduces equipment count and simplifies the overall installation.

Fully Automatic Operation Monitors utility power continuously. On utility failure, signals the generator to start and transfers the load automatically. Returns load to utility when stable voltage is restored. No homeowner action required.

Solenoid-Driven Mechanism Economical, high-reliability solenoid actuation. Long-life silver alloy contacts under high closing pressure resist burning and pitting over thousands of operations.

Solid Bus Bar Connection Direct solid bus bar connection between the circuit breaker and transfer switch — eliminating loose wiring connections at the most critical point in the assembly.

Fully Rated Neutral and Ground Bar Silver-plated neutral and ground bus with bonding jumper. Rated for full current — no derating required.

Simplified Installation Solderless screw-type terminals for all external power connections. Matched specifically to the RS series generator for faster, straightforward installation.


Specifications

Amperage 400A
Service Rating Service Entrance Rated
Listing UL 1008 / UL 489
Generator Compatibility Cummins RS Series
Code Compliance NEC / NFPA
Bus Connection Solid bar between breaker and switch
Neutral/Ground Bus Silver-plated, fully rated with bonding jumper
Monitoring Continuous 24/7 utility power monitoring
Application Residential / Light Commercial

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Cummins

Cummins RA400SE 400A Service Entrance Rated Automatic Transfer Switch

SKU: A050W853
$3,343.63$3,447.04 Save $103.41
In Stock ·  In Stock • Delivery in 3-7 Days
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400A service entrance rated ATS paired with the Cummins RS series generator. UL 1008 listed with UL 489 listed circuit breaker. Built as a matched set for faster, cleaner installation. Covers residential and light commercial standby applications. NEC and NFPA compliant.


Features & Benefits

Service Entrance Rated Listed for installation at the service entrance. Incorporates a UL 489 listed circuit breaker. No separate main disconnect required upstream — reduces equipment count and simplifies the overall installation.

Fully Automatic Operation Monitors utility power continuously. On utility failure, signals the generator to start and transfers the load automatically. Returns load to utility when stable voltage is restored. No homeowner action required.

Solenoid-Driven Mechanism Economical, high-reliability solenoid actuation. Long-life silver alloy contacts under high closing pressure resist burning and pitting over thousands of operations.

Solid Bus Bar Connection Direct solid bus bar connection between the circuit breaker and transfer switch — eliminating loose wiring connections at the most critical point in the assembly.

Fully Rated Neutral and Ground Bar Silver-plated neutral and ground bus with bonding jumper. Rated for full current — no derating required.

Simplified Installation Solderless screw-type terminals for all external power connections. Matched specifically to the RS series generator for faster, straightforward installation.


Specifications

Amperage 400A
Service Rating Service Entrance Rated
Listing UL 1008 / UL 489
Generator Compatibility Cummins RS Series
Code Compliance NEC / NFPA
Bus Connection Solid bar between breaker and switch
Neutral/Ground Bus Silver-plated, fully rated with bonding jumper
Monitoring Continuous 24/7 utility power monitoring
Application Residential / Light Commercial

Payment & Security

Payment methods
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Highlights

Authorized dealer — warranty fully protected
Free shipping — 47 contiguous US states
In Stock • Delivery in 3-7 Days
Customer Support: (708) 738-7167
1-Year Cummins Limited Manufacturer Warranty
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Questions & Answers
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A: Order tracking is provided via email. If for any reason tracking information is delayed or missing for any reason, our support team is available to provide shipment updates and assist with your order.
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A: Our experts are here to help. Call, text, or email us and we'll recommend the right solution based on your specific needs.
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