

MODEL: OTEC600 (SPEC B) - A066Y114 | 120/208V 3-PHASE | NON-SERVICE RATED | NEMA3R ENCLOSURE
Cummins 600-Amp Automatic Transfer Switch, NEMA3R
Expected Availability - Call
Product Overview
The Cummins 600A OTEC Series Spec B Automatic Transfer Switch delivers reliable emergency standby power for commercial and light industrial facilities. This 120/208V 3-phase unit monitors your primary power source and generator, automatically starting your generator and transferring loads when needed.
Designed for emergency, legally required, and optional standby circuits, this non-service entrance rated transfer switch comes in a weather-resistant NEMA3R enclosure suitable for outdoor installation. At its core is the advanced PowerCommand® 40 control system, offering comprehensive monitoring and management capabilities through an intuitive digital interface.
PowerCommand® 40-01 Control System
The fully featured microprocessor-based control includes an LCD digital display with easy-to-use tactile soft-switches for straightforward operation and menu navigation. All features, settings, and adjustments are software-enabled, ensuring precise configuration and simple setup for your specific application requirements.
Key Features
Easy Service and Access – Service technicians will appreciate the thoughtful design elements including plug connections, door-mounted controls, generous access space, and compatible terminal markings that simplify installation and maintenance.
Advanced Transfer Mechanism – The bi-directional linear motor actuator provides smooth, friction-free operation with constant force and straight-line switching action. Unlike traditional designs, there are no complex gears or linkage systems to maintain or fail.
Manual Operation Capability – Should you need to operate the switch manually under de-energized conditions, the integrated manual operating handles, shielded termination, and over-center contact mechanisms make it straightforward and safe.
Positive Interlocking – Both mechanical and electrical interlocking systems prevent dangerous source-to-source connections, whether through power or control wiring, ensuring safe operation at all times.
Specifications
- Amperage Rating: 600 Amps
- Voltage: 120/208V, 3-Phase
- Enclosure: NEMA3R (weather-resistant)
- Service Rating: Non-Service Entrance Rated
- Dimensions: 59.0"H × 27.5"W × 18.0"D
- Weight: 285 lbs
Spec Sheet - OTEC Series Switches
This transfer switch is ideal for facilities requiring dependable backup power protection, from office buildings and retail centers to manufacturing facilities and critical infrastructure applications.