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When dependable backup power is critical, every second matters. The Cummins OTEC600 Outdoor Automatic Transfer Switch | 600A 208V 3-Phase | NEMA 3R is designed to automatically transfer electrical loads between utility power and a standby generator whenever an outage occurs. Built with the trusted Cummins PowerCommand 40 controller, this heavy-duty transfer switch delivers intelligent monitoring, dependable switching performance, and advanced control features for demanding commercial, industrial, agricultural, and institutional applications.
Designed with a rugged NEMA 3R outdoor enclosure, this automatic transfer switch withstands outdoor environments while protecting critical electrical infrastructure. Its 600A capacity, 208V three-phase configuration, and open-transition switching make it an excellent solution for facilities requiring dependable emergency power without unnecessary complexity.
Whether you're protecting commercial buildings, agricultural operations, municipal facilities, manufacturing plants, mobile businesses, or large residential properties with commercial-grade electrical systems, the Cummins OTEC600 helps ensure power is restored automatically when utility service fails.
Unlike manual transfer switches that require someone to be present during an outage, this automatic system continuously monitors utility power, starts the generator when needed, transfers the electrical load automatically, and safely returns to utility power once normal service resumes. That means less downtime, improved equipment protection, and greater peace of mind.
Power interruptions can happen without warning. The Cummins OTEC600 continuously monitors utility power and automatically transfers electrical loads to your standby generator, helping reduce downtime while keeping important equipment and operations running with minimal interruption.
The weather-resistant NEMA 3R enclosure is built for outdoor installations where protection from rain, snow, and environmental conditions is important. It helps safeguard internal components while reducing installation limitations for commercial properties and facilities.
The integrated Cummins PowerCommand 40 controller features an easy-to-read LCD display that provides operating status, diagnostics, and configuration options. This allows installers and operators to monitor system performance with confidence and respond quickly when necessary.
Open-transition transfer technology safely disconnects from one power source before connecting to another. This proven switching method delivers reliable automatic operation while protecting connected electrical equipment during normal utility failures and generator operation.
Routine generator testing is essential for dependable emergency operation. The built-in exerciser schedule automatically runs your standby generator at scheduled intervals, helping verify readiness before unexpected outages occur.
With a substantial 600-amp rating and 208V three-phase electrical configuration, this transfer switch supports demanding commercial, industrial, agricultural, institutional, and large-scale backup power applications requiring dependable electrical capacity.
As part of the Cummins UL 1008 Listed transfer switch family, the OTEC600 is engineered to meet recognized safety and performance standards, providing long-term reliability for professional backup power installations.
Cummins provides a limited warranty policy, ensuring the absence of defects in materials, workmanship, and performance during the warranty period.
Cummins OTEC600 Outdoor Automatic Transfer Switch | 600A 208V 3-Phase | NEMA 3R Specifications |
|
|---|---|
| Product Name | Cummins OTEC600 Outdoor Automatic Transfer Switch |
| Manufacturer | Cummins |
| Manufacturer Part Number | A075F142 |
| Model | OTEC600 |
| Product Type | OTEC Automatic Transfer Switch |
| Amperage Rating | 600A |
| Voltage | 208V |
| Phase | 3-Phase |
| Poles | 3-Pole |
| Transfer Operation | Open Transition |
| Controller | Cummins PowerCommand 40 |
| Display | LCD Display |
| Enclosure | NEMA 3R Outdoor |
| Service Entrance Rated | No |
| Exerciser | Configurable Automatic Exerciser Schedule |
| Frequency | 50/60 Hz Family |
| Maximum Family Voltage | Up to 600 VAC |
| Family Amp Ratings | 40A–1200A |
| Configuration Options | 3- and 4-Pole Options Available |
| Certification | UL 1008 Listed Family |
| Installation | Professional Installation Recommended |
| Application | Commercial, Industrial, Agricultural, Institutional, Large Residential Backup Power |
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