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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.

Specifications
Standard Equipment

Controller Specifications

Source Sensing
120 - 690 VAC +/- 1% of nominal voltage (+/- .05 Hz, +/-.5 A)
Control Power
120 VAC
Communications Interface (optional)
Serial RS-485 upt to 115.2 Kbps or TCP/IP (10/100 base-T)
Undervoltage dropout for source 1 and source 2
75-99% of nominal
Undervoltage restore for source 1 and source 2
85-100% of nominal
Underfrequency dropout for source 1 and source 2
45 - 59.9 Hz
Underfrequency restore for source 1 and source 2
45 - 59.5 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
Overfrequency dropout for source 1 and source 2
50.1 - 63 Hz
Overfrequency restore for source 1 and source 2
50 - 62.9 Hz
Voltage unbalance on dropout for source 1 and source 2
5 to 20% of nominal
Voltage unbalance for restore for source 1 and source 2
4 to 19% of nominal
Load control relay contacts
rated for 10A @ 24VDC or 120VAC
Load control relay contacts
0-259 minutes
Delay for engine cool down (U)
0-60 minutes
Delay transfer to nonpreferred source (W)
0-5 minutes
Delay NeutralTransition time delays (DT,DW)
0-10 minutes
Storage temperature
(-40?C - 90?C )
Operating temperature (ambient)
(-20?C to 50?C)

Technical Summary

Rating Range
Switch Dependent
Transfer Type
Application Dependent
Switch Type
Application Dependent
  • The Cat MX350 Controller for the CTE Series ATS
  • Status LEDS for:
  • Graphical Display:
  • Ranges of Controls / Metering:
  • Testing and Certification