MX350 Controller

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The MX350 controller is specifically designed for low voltage Automatic Transfer Switch (ATS) applications. The flexible control and communications options are ideal for any application. Integrated push buttons, graphical controls and LED indicators reduce external components and wiring in addition to providing local control and access to system information. Multiple communication protocols allow simple integration into monitoring and control systems.

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Communications Interface - Optional Serial RS-485 upt to 115.2 Kbps or TCP/IP (10/100 base-T)
Control Power 120 VAC
Delay NeutralTransition Time Delays (DT,DW) 0-10 minutes
Delay Transfer to Nonpreferred Source (W) 0-5 minutes
Delay for Engine Cool Down (U) 0-60 minutes
Load Control Relay Contacts (1) rated for 10A @ 24VDC or 120VAC
Load Control Relay Contacts (2) 0-259 minutes
Operating Temperature Ambient (-20˚C to 50˚C)
Overfrequency Dropout for Source 1 and Source 2 50.1 - 63 Hz
Overfrequency Restore for Source 1 and Source 2 50 - 62.9 Hz
Overvoltage Dropout for Source 1 and Source 2 105 - 110% of nominal
Overvoltage Restore for Source 1 and Source 2 103 - 108% of nominal
Source Sensing 120 - 690 VAC +/- 1% of nominal voltage (+/- .05 Hz, +/-.5 A)
Storage Temperature (-40˚C - 90˚C )
Underfrequency Dropout for Source 1 and Source 2 45 - 59.9 Hz
Underfrequency Restore for Source 1 and Source 2 45 - 59.5 Hz
Undervoltage Dropout for Source 1 and Source 2 75-99% of nominal
Undervoltage Restore for Source 1 and Source 2 85-100% of nominal
Voltage Unbalance for Restore for Source 1 and Source 2 4 to 19% of nominal
Voltage Unbalance on Dropout for Source 1 and Source 2 5 to 20% of nominal
Rating Range Switch Dependent
Switch Type Application Dependent
Transfer Type Application Dependent

Standard Equipment:

  • Status Leds For:
    • Transfer Inhibit
    • Active Alarms
    • Source 1 and 2 Availablity
    • Source 1 and 2 Connected
    • Time Delay Active
  • Graphical Display:
    • Color graphical display with USB Calibration/programming port and Embedded Help
    • Displays 256 time-tagged events with 1 ms resolution
    • Monitors over/under frequency, voltage conditions, frequency imbalance, and phase rotation
    • Provided detailed outage,test,and diagnostic reports
  • Ranges Of Controls / Metering:
    • Programmable generator exerciser
    • Synchroscope
    • Contacts for Source 1 and Source 2 position indication as well as remote load test signals, and engine start delay
    • Source 1 and Source 2 In-phase monitor
    • Neutral, Engine Start, and Engine stop time delay timers
  • Testing And Certification
    • Conforms to EN 60947-1, EN 60947-6-1, EN 60255-26 (EN 50263), EN 5502 / CISPR22 / EN 61000-6-2 / EN 61000-6-4
    • Tested in accordance with:
      IEC 60068-2-30
      IEC 60068-2-1
      IEC 60068-2-2
      IEC 60255-22-1
      IEC 60255-22-2
      IEC 60255-22-3
      IEC 60255-22-4
      IEC 60255-22-5
      IEC 60255-22-6
      IEC 60255-25
      IEC 60529; IP54 (front),IP20(back)
      IEC 61000-4-11
    • Quality System:
      Manufactured under an ISO 9001 Registered Program

Optional Equipment:

  • Option Package A:
    • Four (4) programmable inputs and four (4) outputs assignable to additional ATS features
    • Expanded diagnostics, high-speed 256 event capture, 365 days
    • Monitoring Software (local or remote), USB interface for uploading and downloading setup parameters
    • Full function ATS control with full sensing and control capabilities
    • Full complement of programmable ATS control switches AUTO / MAN, Preferred Source selector,Commit / No Commit Xfer, Transition Mode Select for Closed Transition switch models)
  • Option Package B:
    • Waveform capture, ten (10) channels, up to 256 cycles each sixteen (16) samples / sec.
    • Ten (10) customer programmable digital and ten (10)analog alarms.
    • Includes Option Package A features, plus
    • Auto Load Shed with voltage, frequency and kW triggers.
    • Twenty (20) channel data logger, customer configurable sample period from one (1) cycle to sixty (60) minutes.
  • Option Package C:
    • Includes Option B features, plus
    • Four (4) additional inputs and outputs (totaling eight (8) in & eight (8) out)
  • Option Package D:
    • Customized user control logic
    • Includes Option Package C features, plus
    • Four (4) additional inputs and outputs (totaling twelve (12) in & twelve (12) out)
  • Option Package M:
    • Configuration for Manual Operation only (Non-Automatic)
Renee HerndonRenee Herndon
21:55 29 Feb 24
Dalton was very helpful, The road construction, however, was not! 😂I would rather have to sand paper an alligators @$$ in a phone booth that to get in that mess again.
Michael BirrenMichael Birren
14:58 24 Feb 24
I purchased a used C-15 from a customer of Greg Pool was a running take out. I picked up the engine from the Greg Pool Cat near Nags Head NC. They started they had done all service on this engine stated the hours and all items replaced during the life of engine under their care. I just recently put the engine in my boat after 2 years of building the vessel I find that everything they said about the engine was a LIE!!! Turbo was Bad, After cooler was not updated to the newer version for the C-15 it was missing a terminal Resistor that was clearly stolen off the engine which created a major issue with start up upon installation. Greg Pool Caterpillar stated the hours at 3300 we find out there were 5700 hours. I didn’t do a start up or test run which I regret because i was dealing with a Caterpillar dealer i thought i could trust them. Clearly not Buyers Be Ware if your dealing with Greg Pool Caterpillar in NC. I have 3 of the C-15 engines in my Work boats here in Tampa Fl and my Cat dealership here is Ring power who have done an amazing job to get me going with this Engine. I am very Disappointed in The Caterpillar company for allowing such A dealership to exist.
David LawrenceDavid Lawrence
13:04 22 Feb 24
Brandon PierceBrandon Pierce
22:00 18 Feb 24
Darin NoeDarin Noe
01:17 16 Feb 24
Jose SotoJose Soto
15:26 23 Sep 23
Hunter ElliottHunter Elliott
16:17 07 Sep 23
Rick Kelly-CrapseRick Kelly-Crapse
21:06 25 Aug 23
They had all my parts for my 3208 Cat.Friendly folks at parts counter.