Custom MCC
Configurations
When off-the-shelf won't cut it. Custom-engineered motor control solutions for unique applications, complex sequences, and special requirements.
Engineering Capabilities
- Control system design
- PLC programming (AB, Siemens)
- HMI development
- Load & short-circuit analysis
- Coordination studies
- Arc flash calculations
- AutoCAD panel layouts
When You Need Custom Engineering
Most motor control applications fit standard patterns: a feeder, a starter, maybe a VFD. But some applications require custom logic, multiple motors in sequence, special interlocks, or integration with existing control systems. That's where our engineering team comes in.
We're a UL 508 certified facility. Tell us what your application needs to do, and we'll design a control solution that fits in your MCC, meets code, and actually works the way you need it to.
Custom Applications We've Built
Multi-Motor Sequential Control
Control 2-4 motors in a specific sequence with programmed start delays, load monitoring, and automatic shutdown on fault. Common for conveyor systems, pump stations, or process equipment where startup order matters.
Example: Wastewater lift station with lead/lag pump control and alternation logic
PLC-Based Control Buckets
Integrate a PLC (Allen-Bradley, Siemens, etc.) into an MCC bucket for complex logic, data logging, or communication with supervisory systems. Includes power supply, I/O modules, and all necessary interfaces.
Example: Batch process controller with recipe management and remote monitoring
VFD with Bypass & Redundancy
VFD bucket with automatic bypass contactor for emergency operation if the drive fails. Includes bypass interlock logic, isolation switching, and status indication. Can be manual or automatic transfer.
Example: Critical HVAC fan that must keep running even if VFD fails
Dual-Speed / Multi-Speed Motors
Control buckets for two-speed motors (separate windings) or multi-speed applications using pole-changing contactors. Includes interlocking to prevent simultaneous speed energization and programmable transition logic.
Example: Cooling tower fan with high/low speed operation
Reduced Voltage Auto-Transformer Starters
Old-school reduced voltage starting using auto-transformers for large motors. We still build these when soft starters or VFDs aren't appropriate. Includes start/run transition logic and timer control.
Example: 500 HP motor in facility with limited fault current capacity
Wye-Delta Reduced Voltage Starting
Two-step starting using wye-delta transition for motors with six leads. Reduces inrush to 33% of full voltage starting. Includes timers, contactors, and proper interlocking.
Example: Large compressor or crusher motor with limited power supply
Process Interlocks & Permissives
Motor control with extensive interlocking: won't start unless valves are in position, upstream equipment is running, safety switches are made, or other conditions are met. Hard-wired safety logic with status indication.
Example: Conveyor won't start if downstream conveyor is off or if safety gates are open
Special Voltage / Frequency
Control buckets for non-standard voltages (115V, 347V, 575V) or special frequencies (25Hz, 50Hz, 400Hz). Includes proper component selection and control power transformation.
Example: 347V lighting control bucket for Canadian facility
Motor-Generator Set Control
Starting and control logic for motor-generator sets requiring special sequencing, synchronization checking, or load transfer logic. Can integrate with automatic transfer switches.
Example: Backup generator control with utility/generator transfer logic
Our Engineering Process
Application Review
Describe your application in detail: what needs to start, in what order, under what conditions, and what should happen if something goes wrong. We'll ask clarifying questions to understand all the requirements.
Preliminary Design
We sketch out a control approach and component list. You get a basic schematic showing how it will work, along with a quote for engineering and fabrication.
Detailed Engineering
Complete control schematics, panel layout, and bill of materials. Load calculations, short-circuit analysis, and coordination if needed. You approve the design before we build anything.
Fabrication & Programming
Build the bucket, wire per the approved drawings, and program any logic controllers. All wiring is labeled and routed properly. Clean, professional work.
Testing & Documentation
Bench test every control function and sequence. You get as-built drawings, test reports, PLC code (if applicable), and O&M manuals. UL 508 compliant.
Why Custom Engineer?
- ✓Get exactly what your application needs, not "close enough"
- ✓Professional engineering and documentation
- ✓UL 508 certification for compliance
- ✓One vendor responsible for the complete solution
- ✓Tested and proven before it ships
- ✓Long-term support and troubleshooting
Typical Timeline
Start Your Project
Describe your application and we'll provide an engineering proposal within a few days.
Call 307-442-0382Email RequirementsCertifications & Compliance
UL 508 Certified
Our facility is UL 508 certified. Every custom bucket is built to UL standards for industrial motor control equipment.
NEC Compliance
All designs meet National Electrical Code requirements for motor control, wiring methods, and overcurrent protection. We stay current with code changes.
NFPA 79 (when required)
For machinery builders and OEMs requiring NFPA 79 compliance, we design and document to those standards.