Cummins PowerCommand 40 Control OTEC Transfer Switch 400A 240V NEMA 3R
The OTEC 240V 400A 3 Phase Automatic Transfer Switch features PowerCommand 40 Control, a microprocessor-based controller with LCD Display, and a comprehensive list of functions. Cummins OTEC A066Y100 Open Transition transfer switches are a perfect fit for a wide range of commercial and light industrial transfer switch applications.
- Break-Before-Make Switch
- Electrically operated—Mechanically held
- Electrical and mechanical interlocks prevent inadvertent interconnection.
- NEMA 3R enclosure for indoor installation only.
This 240V 400A Cummins Transfer Switch provides the basic hardware and features required for automatic operation of a standby generator.
Cummins 240-Volt Transfer Switch Control
PowerCommand 40 is a microprocessor controller with LCD digital display, a full list of functions, and tactile soft switches for straightforward operation and navigation. Highlighted controls include PC software configuration with 3 phase sensing on both sources; manual restore to S1; synchronization check; and event logging. The S-6560 Specification Sheet includes all the benefits and features.
With a programmed transition, switch timing allows the Cummins ATS to disconnect the load from both sources for a programmed time period—especially important for large inductive loads.
Cummins 400 Amp ATS Advanced Mechanism
The ATS mechanism operates electrically with a mechanical hold in the Source 1 and Source 2 positions. Cummins OTEC 240-Volt 400-Amp Automatic Transfer Switch Series switches perform a break-before-make action while electrical interlocks prevent interconnection of the normal and emergency signals. High pressure silver alloy contacts resist burning or pitting; arcing surfaces protect the main contacts. Multiple leaf chutes cool and quench arcs, further protecting the contacts. A protective cover allows inspection while preventing accidental contact with energized surfaces.
UL-1008 certification including the contact assemblies covers applications requiring high endurance switching capability for the life of the ATS.
Cummins OTEC Transfer Switch Specifications
| Voltage Rating | 120/240-Volts 3 Phase AC at 60 Hertz. |
| Transition Modes | Open Delayed;
Open-In Phase—capable of programmed transition backup |
| Arc Interruption | Multiple Leave Arc Chutes. |
| Neutral Bar | Rated for Full Current with Lugs—Standard on 3 Pole transfer switches. |
| Auxiliary Contacts | Two isolated, normally open contacts for customer use close to indicate switch position. Wired to terminal block, rated at 10A and 250-Volts. |
| Surge Rating | Conforms to IEEEC62.41 and IEEE C62.42 |
| Transfer Time | Total transfer time source to source does not exceed 6 cycles at 60 Hertz (does not include programmed transition). |
| Manual Operation | Manual transfer capable with all sources disconnected. |
Product Specifications
Model
Model Number; A066Y100
Manufacturer; Cummins Onan
Made In USA; No
Voltage; 120/240V Three Phase
Enclosure; Nema 3R Indoor/Outdoor
UL Listed; Yes
Type; Automatic Transfer Switch
Transfer Switch Model; Cummins OTEC PowerCommand 40
Features
Weight; 275 lbs
Dimensions; 59H x 27.5W x 16.5D
Warranty Information
Consumer Warranty; Cummins 1-Year Comprehensive Limited Warranty
Commercial Warranty; Cummins 1-Year Comprehensive Limited Warranty
Fuel
Fuel Gauge; No
Transfer Switches
Transfer Switch Model; Cummins OTEC PowerCommand 40
Transfer Switch Amps; 400 Amps
Transfer Switch Circuits; None
Ats Poles; 3 Pole
