Cummins OTEC400 Automatic Transfer Switch
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At a glance
- Amperage
- 400 A
- Voltage
- 120/240 V (rated up to 600 V AC)
- Phase
- Single-phase (1Ø)
- Poles
- 2-pole
- Service Entrance Rated
- No (Non-Service-Entrance / NSE)
- Enclosure
- NEMA Type 1 (indoor, general purpose)
- Frequency
- 50/60 Hz
- Listing
- UL 1008 listed; NEMA ICS 10 compliant
- Control
- PowerCommand 40-11 microprocessor control with LCD display
- Transition Type
- Open transition (with programmed transition timing)
Why this generator
- 400-amp automatic transfer switch for single-phase 120/240V standby power applications
- Non-service-entrance rated in a NEMA Type 1 indoor enclosure
- UL 1008 listed and NEMA ICS 10 compliant for code-compliant emergency and standby use
- PowerCommand 40-11 microprocessor control with LCD display and tactile soft-switch navigation
- Bidirectional linear actuator delivers smooth, constant-force straight-line transfer action
- Heavy-duty silver alloy contacts with multi-leaf arc chutes rated for motor loads or full system transfer
- Mechanical and electrical interlocking prevents source-to-source connection
Everything you need to know
Cummins OTEC400 — 400 Amp automatic transfer switch with LCD display, open transition, and configurable exerciser scheduler. Choose voltage, phase, and enclosure rating below.
- 400A, 3-Pole
- NEMA 1 (indoor) or NEMA 3R (outdoor) enclosure
- 240V/1Ph, 208V/3Ph, 240V/3Ph, or 480V/3Ph
- 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?+
Shipping is 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
Shipping calculated at checkout. Most items leave the warehouse in 2–4 business days.
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.