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Specification Summary
Rating Range Switch Dependent
Transfer Type Application Dependent
Switch Type Application Dependent
Undervoltage Dropout for Source 1 and Source 2 75-98% of nominal

Technical Summary

Rating Range
Switch Dependent
Transfer Type
Application Dependent
Switch Type
Application Dependent

Controller Specifications

Undervoltage Dropout for Source 1 and Source 2
75-98% of nominal
Undervoltage Restore for Source 1 and Source 2
85-100% of nominal
Underfrequency Dropout for Source 1 and Source 2
90-100% of nominal
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
(-30˚C - 75˚C ), -22˚F - 167˚F
Operating Temperature Ambient
40 - 400 amp molded shell (-20˚C to 65˚C) , -4˚F to 149˚F
40 - 4000 amp all others (-20˚C to 60˚C), -4˚F to 149˚F
  • Performance
    • UL, CSA and IEC listed
    • Ringing wave immunity per IEEE 472(ANSIC37.90A)
    • Conducted and Radiated Emissions per EN55022Class B (CISPR11) (Exceeds EN55011 & MILSTD461 Class 3)
    • ESD immunity test per EN61000-4-2 Class B(Level 4)
    • Radiated RF, electromagnetic field immunitytest per EN61000-4-3 (ENV50140) 10v/m
    • Electrical fast transient/burst immunity test perEN61000-4-4
    • Surge immunity test per EN61000-4-5 IEEE C62.41
    • Conducted immunity test per EN61000-4-6(ENV50141)
    • Voltage dips and interruption immunity EN61000-4-11
  • User Friendly Operation
    • Multipurpose display: LEDs for continuous monitoring of switch position and source availability; a four line by twenty character LCD display for settings, functions, programming and annunciation
    • Through-the-door programming and display
    • Simplified keypad entry – menu-driven system is designed for ease of use
    • Built-in diagnosis with displays for ease of troubleshooting
    • Weather and tamper resistant touchpad
  • Additional Features
    • Built-in programmable exerciser uses separate microcontroller with independent battery back-up to serve as clock/calendar – battery failure will not affect switch operation
    • User settings are unaffected by power outages
    • Separate line voltage components for controller isolation
    • Inputs are optoisolated for high electrical immunity to transients and noise
    • Built-in electrical operator protection
    • Watchdog circuit for microprocessor operation
    • Source connection and transfer data logging