Cummins OTEC 125 (A075F125): Specs & Datasheet
MPN: OTEC 125 (A075F125)The Cummins OTEC 125 Amp is a 125 A, 3-phase automatic transfer switch family for commercial and industrial backup power. Searches for “cummins otec125 125a 3ph-120/208v” land on this family — we stock the OTEC 125 NSE in multiple voltage configurations, including 480V 3-phase (A075F125) and 208V 3-phase variants. Specifications below are for the 480V 3-phase NSE unit; call for the 120/208V configuration's sheet.
Specifications
| Model number | A075F125 (OTEC 125 NSE family) |
|---|---|
| Amperage rating | 125 A |
| Voltage rating | 480V (208V 3-phase variants also stocked) |
| Phase / frequency | 3-phase, 60 Hz |
| Pole configuration | 4-pole (switched neutral) |
| Transfer type | Open transition (break-before-make) |
| Service rating | Non-Service Entrance (NSE) |
| Enclosure | NEMA 1 (indoor) |
| Controller | PowerCommand 40-11 microprocessor with LCD display |
| Contact material | Heavy-duty silver alloy with multi-leaf arc chutes |
| Certifications | UL 1008, CSA; NEC/NFPA compliant |
Compatible With / Used In
- Cummins backup generator sets — PowerCommand integration for seamless utility-to-generator transfer
- Emergency, legally required, and optional standby systems — UL 1008-listed for professional installations
- Commercial and industrial 3-phase loads — balanced distribution across complex electrical loads
Datasheet Availability
The Cummins OTEC series specification document S-1639 covers this switch family. We supply it with every quote — call (502) 790-0600. Manufacturer resources: cummins.com/generators.
View the OTEC 125 (A075F125) product page →
Frequently Asked Questions
What are the specs of the Cummins OTEC125 125A 3-phase transfer switch?
The OTEC 125 NSE is rated 125 A, 3-phase 60 Hz, with 4-pole switched neutral, open-transition transfer, PowerCommand 40-11 microprocessor control, NEMA 1 enclosure, and UL 1008 listing. We stock 480V and 208V 3-phase configurations.
Is the Cummins OTEC125 available in 120/208V?
We stock the OTEC 125 family in multiple 3-phase voltage configurations including 208V — call (502) 790-0600 to confirm the exact A075F-variant for a 120/208V system.
What does NSE mean on a Cummins transfer switch?
NSE = Non-Service Entrance. The switch is installed downstream of the service disconnect, so it does not require service-entrance certification — allowing flexible mounting in commercial and industrial layouts.
Is the Cummins OTEC 125 in stock?
Yes — Portlandia Electric Supply lists OTEC 125 configurations as in stock. Contact us for pricing and lead time.
Specifications sourced from the manufacturer listing data maintained by Portlandia Electric Supply. Where a value is not published, it is marked as such — we do not estimate specifications. Questions: call (502) 790-0600. Portlandia Electric Supply, Louisville, KY — 12+ US distribution hubs.