MODEL: OTEC125 NSE (SPEC C) - A075F123 | 120/208V 3-Phase | NON-SERVICE RATED | NEMA1 ENCLOSURE
Cummins OTEC125 Non-Service Rated Transfer Switch (Spec C)
Professional-Grade Power Protection for Commercial & Light Industrial Applications
NEW SPEC C MODEL – Now featuring the advanced PowerCommand® 40-11 digital control for superior reliability and ease of use.
Smart, Simple, Dependable Standby Power
When the power goes out, your business can't afford downtime. The Cummins OTEC125 transfer switch delivers automatic, seamless power transfer between utility and generator sources—keeping your operations running without interruption.
Designed for emergency, legally required, and optional standby circuits, this 125-amp transfer switch combines proven reliability with modern digital control technology. Perfect for commercial buildings, light industrial facilities, and mission-critical applications.
PowerCommand® 40-11 Control – Intelligence Built In
At the heart of the OTEC125 is the fully featured PowerCommand® 40-11 microprocessor control. This intuitive system puts complete monitoring and management at your fingertips:
- Crystal-clear LCD display shows real-time system status at a glance
- Tactile soft-switch interface makes navigation effortless
- Software-enabled settings ensure precision setup and easy adjustments
- Comprehensive monitoring of both utility and generator sources
No guesswork. No complicated programming. Just intelligent control that works.
Engineered for Reliability
Advanced Linear Motor Actuator Technology Unlike traditional transfer switches with complex gears and linkages, the OTEC125 uses a bi-directional linear motor actuator. This means virtually friction-free operation, constant transfer force, and straight-line action—resulting in longer life and superior reliability.
Dual Safety Interlocking Both mechanical and electrical interlocks prevent dangerous source-to-source connections, ensuring safe operation under all conditions.
Manual Override Capability Shielded terminations, manual operating handles, and over-center contact mechanisms allow for safe manual operation during de-energized conditions—giving you control when you need it most.
Built for Real-World Service
Effortless Maintenance Access
- Plug connections for quick disconnects
- Door-mounted controls for easy viewing and adjustment
- Spacious interior layout for comfortable servicing
- Compatible terminal markings that match industry standards
Every detail designed to save your technician time and reduce service costs.
Technical Specifications
- Voltage: 120/208V, 3-Phase
- Current Rating: 125 Amps
- Enclosure: NEMA1, Non-Service Rated
- Control: PowerCommand® 40-11
- Series: OTEC (Spec C)
- Dimensions: 27" H × 20.5" W × 12" D
- Weight: 148 lbs
Codes and Standards
- UL - UL 1008 Listed with UL 50E Type Cabinets and UL Listed CU-AL terminals.
- NEMA - Compliance with NEMA ICS 10.
- CSA - Certified to CSA 22.2.
- IEEE - Compliance with IEEE 446 for Emergency and Standby Power Applications.
- NFPA - Compliance with NFPA 70, 99, and 110 (Level 1).
- NEC - Suitable for use in Emergency, Legally Required Standby and Critical Power Systems per NEC 700, 701, 702, and 708.
- EMC - Meets Electromagnetic Compatibility (EMC) standards for Generic Immunity and Emissions Standards for Industrial environment.
- IBC - Certified to IBC Seismic 2021.
Applications
- Emergency standby power systems
- Legally required standby circuits
- Optional standby applications
- Commercial buildings
- Light industrial facilities
- Critical backup power installations
Why Choose the Cummins OTEC125?
Trusted Brand – Cummins has been the gold standard in power generation for decades.Modern Technology – Spec C upgrade brings the latest PowerCommand® 40-11 control platform.
Service-Friendly Design – Reduces installation time and ongoing maintenance costs.
Code Compliant – Meets requirements for emergency and standby power applications.
Ready to protect your facility from power interruptions?
The Cummins OTEC125 transfer switch delivers the reliability you need with the intelligent control you want. Contact Buckeye Power Systems today for pricing, technical support, and installation guidance.