Cummins OTEC125 Automatic Transfer Switch
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At a glance
- Amperage
- 125 A
- Poles
- 4-Pole (switched neutral)
- Voltage
- 120/208V
- Phase
- 3-Phase, 60 Hz
- Service Entrance Rated
- No
- Enclosure
- NEMA 1 (indoor)
- Control
- PowerCommand 40-11 microprocessor control with LCD display
- Transition Type
- Open transition (break-before-make)
- Listing
- UL 1008 listed
- Warranty
- 1-Year Limited Warranty
Not sure if this fits?
Why this generator
- 125-amp, 4-pole automatic transfer switch rated for 120/208V 3-phase, 60 Hz standby and emergency power applications
- PowerCommand 40-11 microprocessor control with LCD display for monitoring, voltage imbalance sensing, and phase rotation detection
- Open-transition (break-before-make) operation with heavy-duty silver alloy contacts and multi-leaf arc chutes rated for 100% load interruption
- UL 1008 listed contact assemblies built for high-endurance switching over the life of the switch
- NEMA 1 indoor enclosure for clean, dry installation environments
- Backed by a Cummins 1-Year Limited Warranty
Everything you need to know
Cummins OTEC125 — 125 Amp automatic transfer switch with LCD display, open transition, and configurable exerciser scheduler. Choose voltage, phase, and enclosure rating below.
- 125A, 3-Pole
- NEMA 1 (indoor) or NEMA 3R (outdoor) enclosure
- 208V or 480V, 3-Phase
- Open transition
- LCD display + configurable exerciser
- Non Service Entrance Rated
Factory-authorized Cummins dealer MAP pricing. Ships via calculated freight — shipping shown at checkout (heavy/hazmat item).
Frequently asked questions
Is this a genuine OEM part?+
Yes — sold and shipped as a genuine Cummins part from a factory-authorized dealer.
Will it fit my unit?+
Check your model and year — message us with that info and we'll confirm fit before you order.
How fast does it ship?+
Low cost ground shipping — calculated at checkout (batteries, transfer switches and oversized items). Most leave the warehouse in 2–4 business days.
What's the return policy?+
30-day returns on unused parts and accessories in original packaging.
Fast nationwide shipping
Low cost ground shipping — calculated at checkout. Typically ships in less than 2 weeks.
Install help, no upsell
We size, spec, and connect you with a vetted local installer — or talk your contractor through it for free.
Genuine Cummins part
Sold and shipped as a genuine Cummins OEM part from a factory-authorized dealer. 30-day returns on unused parts in original packaging.